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Economic Inequality

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Economic inequality



 
 
Economic inequality refers to disparities in the distribution of economic assets and income
Income

Income, refers to consumption opportunity gained by an entity within a specified time frame, which is generally expressed in monetary terms. However, for households and individuals, "income is the sum of all the wages, salaries, profits, interests payments, rents and other forms of earnings received......
. The term typically refers to inequality among individuals and groups within a society, but can also refer to inequality among nations
International inequality

International inequality is inequality between countries . Economic inequality between rich and poor countries are considerable. According to the United Nations Human Development Report 2004, the GDP per capita in countries with high, medium and low human development was 24,806, 4,269 and 1,184 PPP$, respectively ....
. Economic Inequality generally refers to equality of outcome
Equality of outcome

Equality of outcome or equality of condition is a form of egalitarianism which seeks to reduce or eliminate differences in material condition between individuals or households in a society....
, and is related to the idea of equality of opportunity. It is a contested issue whether economic inequality is a positive or negative phenomenon, both on utilitarian and moral grounds.

Economic inequality has existed in a wide range of societies and historical periods; its nature, cause and importance are open to broad debate.






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Economic inequality refers to disparities in the distribution of economic assets and income
Income

Income, refers to consumption opportunity gained by an entity within a specified time frame, which is generally expressed in monetary terms. However, for households and individuals, "income is the sum of all the wages, salaries, profits, interests payments, rents and other forms of earnings received......
. The term typically refers to inequality among individuals and groups within a society, but can also refer to inequality among nations
International inequality

International inequality is inequality between countries . Economic inequality between rich and poor countries are considerable. According to the United Nations Human Development Report 2004, the GDP per capita in countries with high, medium and low human development was 24,806, 4,269 and 1,184 PPP$, respectively ....
. Economic Inequality generally refers to equality of outcome
Equality of outcome

Equality of outcome or equality of condition is a form of egalitarianism which seeks to reduce or eliminate differences in material condition between individuals or households in a society....
, and is related to the idea of equality of opportunity. It is a contested issue whether economic inequality is a positive or negative phenomenon, both on utilitarian and moral grounds.

Economic inequality has existed in a wide range of societies and historical periods; its nature, cause and importance are open to broad debate. A country's economic structure or system (for example, capitalism
Capitalism

Capitalism is an economic system in which wealth, and the means of producing wealth, are private property and controlled rather than commonly, publicly, or state-owned and controlled....
 or socialism
Socialism

Socialism refers to a broad set of economic theories of social organization advocating public or state ownership and administration of the means of production and distribution of goods, and a society characterized by equality for all individuals, with a fair or Egalitarianism method of compensation....
), ongoing or past wars, and differences in individuals' abilities to create wealth are all involved in the creation of economic inequality.

There are various Numerical index
Index (economics)

In economics and finance, an index is a single number calculated from a set of prices or of quantities. Examples include the price index, quantity indexes , market performance indexes ....
es for measuring economic inequality. Inequality is most often measured using the Gini coefficient
Gini coefficient

The Gini coefficient is a Statistical_dispersion#Measures_of_statistical_dispersion most prominently used as a income inequality metrics or Wealth condensation....
, but there are also many other methods
Income inequality metrics

The concept of inequality is distinct from that of poverty and fairness. Income inequality metrics or income distribution metrics are used by social scientists to measure the distribution of income, and economic inequality among the participants in a particular economy, such as that of a specific country or of the world in general....
.

Causes of inequality

There are many reasons for economic inequality within societies. These causes are often inter-related, non-linear, and complex. Acknowledged factors that impact economic inequality include the labor market, innate ability, education, race, gender, culture, wealth condensation, development patterns and personal preference for work, leisure and risk.

The labor market


A major cause of economic inequality within modern market economies
Market economy

A market economy is a social system based on the division of labor in which the prices of goods and services are determined in a free price system set by supply and demand....
 is the determination of wages by the market. In this view, inequality is caused by the differences in the supply and demand
Supply and demand

...
 for different types of work.

A job where there are many willing workers (high supply) competing for a job that few require (low demand) will result in a low wage
Wage

A wage is a compensation, usually financial, received by a worker Coincidence of wants for their Labor .Compensation in terms of wages is given to worker and compensation in terms of salary is given to employees....
 for that job. This is because competition
Competition

Competition is a rivalry between individuals, groups, nations, or animals, for territory, a niche, or allocation of resources. It arises whenever two or more parties strive for a goal which cannot be shared....
 between workers drives down the wage. An example of this would be jobs such as dish-washing or customer service. Competition amongst workers tends to drive down wages due to the expendable nature of the worker in relation to his or her particular job.

A job where there are few able or willing workers (low supply) but a large need for the positions (high demand) will result in high wages for that job. This is because competition between employers for employees will drive up the wage. Example of this would include jobs that require highly developed skills, rare abilities, or a high level of risk
Risk

Risk is a concept that denotes the precise probability of specific eventualities. Technically, the notion of risk is independent from the notion of value and, as such, eventualities may have both beneficial and adverse consequences....
. Competition amongst employers tends to drive up wages due to the nature of the job, since there is a relative shortage of workers for the particular position.

The final results amongst these supply and demand interactions is a gradation of different wages representing income inequality within society.

Innate ability
Many people believe that there is a correlation between differences in innate ability, such as intelligence
Intelligence

Intelligence is an umbrella term used to describe a property of the mind that encompasses many related abilities, such as the capacities to reason, to plan, to problem solving, to think abstraction, to comprehend ideas, to use language, and to Learning....
, strength, or charisma
Charisma

The word charisma refers to a rare trait found in certain human personalities usually including extreme charm and a 'magnetic' quality of personality and/or appearance along with innate and powerfully sophisticated personal communicability and persuasiveness....
, and an individual's wealth. Relating these innate abilities back to the labor market suggests that such abilities are in high demand relative to their supply and hence play a large role in increasing the wage of those who have them. Contrariwise, such innate abilities might also affect an individuals ability to operate within society in general, regardless of the labor market.

Various studies have been conducted on the correlation between IQ scores and wealth/income. The book titled "IQ and the Wealth of Nations
IQ and the Wealth of Nations

IQ and the Wealth of Nations is a controversial 2002 book by Dr. Richard Lynn, Professor Emeritus of Psychology at the University of Ulster, Northern Ireland, and Dr....
", written by Dr. Richard Lynn
Richard Lynn

Richard Lynn is a United Kingdom Professor Emeritus of Psychology who is known for his views on race and ethnic group differences. Lynn says that there are race and intelligence and sex and intelligence....
, examines this relationship with limited success; other peer-reviewed research papers have also been criticised harshly. In his book The Mismeasure of Man
The Mismeasure of Man

The Mismeasure of Man is a controversial 1981 book written by the Harvard University paleontology Stephen Jay Gould . The book is a History of science and critique of the methods and motivations underlying biological determinism, the belief that "the social and economic differences between human groups—primarily Race , Social clas...
, Steven Jay Gould claimed that testing intelligence is a flawed endeavor as the tests and the statistical models used to evaluate them are inherently flawed. There is also the highly contested study The Bell Curve
The Bell Curve

The Bell Curve is a controversial book, best-selling 1994 book by the late Harvard University psychologist Richard Herrnstein and American Enterprise Institute political scientist Charles Murray ....
 which suggests that individuals at either extreme of the "intelligence spectrum" are left out of the main streams of society. These are usually individuals who are deemed "unsuccesful" in the light of sociability
Sociability

Excess long comment to prevent listing on...
, according to the study.

Education
One important factor in the creation of inequality is variation in individuals' access to education. Education, especially in an area where there is a high demand for workers, creates high wages for those with this education. As a result, those who are unable to afford an education, or choose not to pursue optional education, generally receive much lower wages. Many economists believe that a major reason the world has experienced increasing levels of inequality since the 1980s is an increase in the demand for highly skilled workers in high-tech industries. They believe that this has resulted in an increase in wages for those with an education, but has not increased the wages of those without an education, leading to greater inequality.

Globalization

Trade liberalization
Free trade

Free trade is a type of trade policy that allows traders to act and transact without coercive interference from government. Thus, the policy permits trading partners mutual gains from trade, with goods and services produced according to the law of comparative advantage....
 may shift economic inequality from a global to a domestic scale. When rich countries trade with poor countries, the low-skilled workers in the rich countries may see reduced wages as a result of the competition, while low-skilled workers in the poor countries may see increased wages. Trade economist Paul Krugman
Paul Krugman

Paul Robin Krugman is an United States economist, columnist, and author. He is a professor of economics and international affairs at Princeton University, a centenary professor at the London School of Economics, and an op-ed columnist for The New York Times....
 estimates that trade liberalisation has had a measurable effect on the rising inequality in the United States. He attributes this trend to increased trade with poor countries and the fragmentation of the means of production
Means of production

Means of production , include machines, tools, plant and equipment, infrastructure, and so on: "all those things with the aid of which man acts upon the subject of labor, and transforms it." ....
, resulting in low skilled jobs becoming more tradeable. However, he concedes that the effect of trade on inequality in America is minor when compared to other causes, such as technological innovation, a view shared by other experts. Lawrence Katz estimates that trade has only accounted for 5-15% of rising income inequality. Some economists, such as Robert Lawrence
Robert Z. Lawrence

Robert Zachary Lawrence , a former South African national, is the current Albert L. Williams Professor of International Trade and Investment at John F....
, dispute any such relationship. Lawrence, in particular, argues that technological innovation and automation has meant that low-skilled jobs have been replaced by machine labor in wealthier nations, and that wealthier countries no longer have significant numbers of low-skilled manufacturing workers that could be affected by competition from poor countries.

Gender, race, and culture

The existence of different gender
Gender

Gender comprises a range of differences between man and woman, extending from the biological to the social. Biologically, the male gender is defined by the presence of a Y-chromosome, and its absence in the female gender....
s, races and culture
Culture

Culture is difficult to define. For example, in 1952, Alfred Kroeber and Clyde Kluckhohn compiled a list of 164 definitions of "culture" in Culture: A Critical Review of Concepts and Definitions....
s within a society is also thought to contribute to economic inequality. Some psychologists such as Richard Lynn
Richard Lynn

Richard Lynn is a United Kingdom Professor Emeritus of Psychology who is known for his views on race and ethnic group differences. Lynn says that there are race and intelligence and sex and intelligence....
 argue that there are innate group differences in ability that are partially responsible for producing race and gender group differences in wealth (see also race and intelligence
Race and intelligence

Race and intelligence have in some cases been claimed to be correlated. Contemporary debate on this issue focuses on the nature, causes, and rectifications of ethnic group differences in intelligence test scores....
, sex and intelligence
Sex and intelligence

Sex and intelligence research investigations differences in the distributions of cognitive skills between men and women. This research employs experimental tests of cognitive ability, which take a variety of forms....
) though this assertion is highly controversial.

The idea of the gender gap
Gender gap

Gender gap may refer to:*Gender differences in a general psycho-social context;*Income disparity of females vs. males in a purely economic context....
 tries to explain differences in income between genders. Culture
Culture

Culture is difficult to define. For example, in 1952, Alfred Kroeber and Clyde Kluckhohn compiled a list of 164 definitions of "culture" in Culture: A Critical Review of Concepts and Definitions....
 and religion
Religion

A religion is an organized approach to human spirituality which usually encompasses a set of myth, symbols, beliefs and practices, often with a supernatural or transcendence quality, that give meaning to the practitioner's experiences of life through reference to a higher power or truth....
 are thought to play a role in creating inequality by either encouraging or discouraging wealth-acquiring behavior, and by providing a basis for discrimination
Discrimination

Discrimination toward or against a person or group is the treatment or consideration based on class or category rather than individual merit. It is usually associated with prejudice....
. In many countries individuals belonging to certain racial and ethnic minorities are more likely to be poor. Proposed causes include cultural differences amongst different races, an educational achievement gap
Achievement gap

An achievement gap refers to the observed disparity on a number of educational measures between the performance of groups of students, especially groups defined by gender, Race /ethnicity, ability, and socioeconomics status....
, and racism
Racism

Racism, by its simplest definition is the belief that Race is the primary determinant of human traits and capacities and that racial differences produce an inherent superiority of a particular race....
.

Diversity of preferences

Diversity of preferences within a society often contribute to economic inequality. When faced with the choice between working harder to earn more money or enjoying more leisure time, equally capable individuals with identical earning potential often choose different strategies. This leads to economic inequality even in societies with perfect equality in abilities and circumstances. The trade-off between work and leisure is particularly important in the supply side of the labor market in labor economics.

Individuals in a society often have different levels of risk aversion
Risk aversion

Risk aversion is a concept in economics, finance, and psychology related to the behaviour of consumers and investors under uncertainty. Risk aversion is the reluctance of a person to accept a bargain with an uncertain payoff rather than another bargain with a more certain, but possibly lower, expected value....
. When equally-able individuals undertake risky activities with the potential of large payoffs, such as starting new businesses, some ventures succeed and some fail. The presence of both successful and unsuccessful ventures in a society results in economic inequality even when all individuals are identical.

Development patterns


Simon Kuznets
Simon Kuznets

Simon Smith Kuznets was an American economist at the Wharton School of the University of Pennsylvaniawho won the 1971 Nobel Memorial Prize in Economic Sciences "for his empirically founded interpretation of economic growth which has led to new and deepened insight into the economic and social structure and process of development"....
 argued that levels of economic inequality are in large part the result of stages of development
Economic development

Economic development is the development of wealth of countries or regions for the well-being of their inhabitants. It is the process by which a nation improves the economic, political, and social well being of its people....
. Kuznets saw a curve-like relationship between level of income and inequality, now known as Kuznets curve
Kuznets curve

Kuznets curve is the graphical representation of Simon Kuznets's theory that economic inequality increases over time while a country is developing, then after a critical average income is attained, begins to decrease....
. According to Kuznet, countries with low levels of development have relatively equal distributions of wealth. As a country develops, it acquires more capital, which leads to the owners of this capital having more wealth and income and introducing inequality. Eventually, through various possible redistribution mechanisms such as social welfare programs, more developed countries move back to lower levels of inequality. Kuznets demonstrated this relationship using cross-sectional data
Cross-sectional data

Cross-sectional data in statistics and econometrics is a type of one-dimensional data set. Cross-sectional data refers to data collected by observing many subjects at the same point of time, or without regard to differences in time....
. However, more recent testing of this theory with superior panel data
Panel data

In statistics and econometrics, the term panel data refers to two-dimensional data. In marketing, panel data refers to data collected at the point-of-sale ....
 has shown it to be very weak.

Wealth condensation

Wealth condensation is a theoretical process by which, under certain conditions, newly-created wealth
Wealth

Wealth is an abundance of valuable material possessions or resources. The word is derived from the old English wela, which is from an Indo-European word stem....
 concentrates in the possession of already-wealthy individuals or entities. According to this theory, those who already hold wealth have the means to invest in new sources of creating wealth or to otherwise leverage the accumulation of wealth, thus are the beneficiaries of the new wealth. Over time, wealth condensation can significantly contribute to the persistence of inequality within society.

As an example of wealth condensation, truck drivers who own their own trucks often make more money than those who do not, since the owner of a truck can escape the rent charged to drivers by owners (even taking into account maintenance and other costs). Hence, a truck driver who has wealth to begin with can afford to buy his own truck in order to make more money. A truck driver who does not own his own truck makes a lesser wage and is therefore stuck in a Catch-22
Catch-22 (logic)

Catch-22 is a term coined by Joseph Heller in his novel Catch-22, describing a set of rules, regulations or procedures, or situation which presents the illusion of choice while preventing any real choice....
, unable to buy his own truck to increase his income.

As another example of wealth condensation, savings from the upper-income groups tend to accumulate much faster than saving from the lower-income groups. Upper-income groups can save a significant portion of their incomes. On the other hand, lower-income groups barely make enough to cover their consumptions, hence only capable of saving a fraction of their incomes or even none. Assuming both groups earn the same yield rate on their savings, the return on upper-income groups’ savings are much greater than the lower-income groups’ savings because upper-income groups have a much larger base.

Related to wealth condensation are the effects of intergenerational inequality. The rich tend to provide their offspring with a better education, increasing their chances of achieving a high income. Furthermore, the wealthy often leave their offspring with a hefty inheritance
Inheritance

Inheritance is the practice of passing on property, Title s, debts, and obligations upon the death of an individual. It has long played an important role in human societies....
, jump-starting the process of wealth condensation for the next generation. However, it has been contended by some sociologists such as Charles Murray
Charles Murray

Charles Murray is the name of several notable people:*Charles Murray, 1st Earl of Dunmore *Charles Augustus Murray , British author diplomat...
 that this has little effect on one's long-term outcome and that innate ability is by far the best determinant of one's lifetime outcome.

Inflation

Some Austrian school
Austrian School

The Austrian School is a Heterodox economics school of economics. It emphasizes the spontaneous organizing power of the price mechanism, holds that the complexity of subjective human choices makes mathematical modelling of the evolving market extremely difficult and therefore advocates a laissez faire approach to the economy....
 economists have theorized that high inflation, caused by a country's monetary policy
Monetary policy

Monetary policy is the process by which the government, central bank, or monetary authority of a country controls the supply of money, availability of money, and cost of money or rate of interest, in order to attain a set of objectives oriented towards the growth and stability of the economy....
, can contribute to economic inequality. This theory argues that inflation of the money supply
Money supply

In economics, money supply, or money stock, is the total amount of money available in an economy at a particular point in time. There are several ways to define "money", but standard measures usually include currency in circulation and demand deposits....
 is a coercive measure that favors those who already have money, thus aggravating inequality. They cite examples of correlation between inflation and inequality and note that inflation can be caused independently by "printing money", suggesting causation of inequality by inflation.

Mitigating factors


There are many factors that tend to constrain the amount of economic inequality within society. These factors may be divided into two general classes: government sponsored, and market driven. The relative merits and effectiveness of each approach is a subject of heated debate.

Proponents of government sponsored approaches to reducing economic inequality generally believe that economic inequality represents a fundamental injustice, and that it is the right and duty of the government to correct this injustice. Government sponsored approaches to reducing economic inequality include:

  • Public education
    Public education

    Public educatoin is education mandated for or offered to the children of the general public by the government, whether national, regional, or local, provided by an institution of civil government, and paid for, in whole or in part, by taxes....
     - to increase the supply of skilled labor and reduce income inequality due to education differentials;


  • Progressive tax
    Progressive tax

    A progressive tax is a tax by which the tax rate increases as the taxable amount increases. "Progressive" describes a distribution effect on income or Consumption , referring to the way the rate progresses from low to high, where the average tax rate is less than the marginal tax rate....
    ation, where the rich are taxed more than the poor - to reduce the amount of income inequality in society.


  • Minimum wage
    Minimum wage

    A minimum wage is the lowest hourly, daily, or monthly wage that employers may legally pay to employees or workers. Equivalently, it is the lowest wage at which workers may sell their labor....
     legislation - to raise the income of the poorest working group. This is debated as it may also cut the least skilled out of the employment market entirely.


  • The Nationalization
    Nationalization

    Nationalization, also spelled nationalisation, is the act of taking an industry or assets into the public ownership of a national government or state....
     or subsidization
    Subsidy

    In economics, a subsidy is a form of financial assistance paid to a business or economic sector. A subsidy can be used to support businesses that might otherwise fail, or to encourage activities that would otherwise not take place....
     of "essential" goods and services such as food
    Food

    Food is any substance, usually composed of carbohydrates, fats, proteins and water, that can be Eating or Drinking by an animal or human for nutrition or pleasure....
    , healthcare, education
    Public education

    Public educatoin is education mandated for or offered to the children of the general public by the government, whether national, regional, or local, provided by an institution of civil government, and paid for, in whole or in part, by taxes....
    , and housing - to reduce the amount of inequality in society - by providing goods and services that everyone needs cheaply or freely, governments can effectively increase the disposable income
    Disposable income

    Disposable income is gross income minus income tax on that income.Discretionary income is income after subtracting taxes and normal expenses to maintain a certain standard of living....
     of the poorer members of society.


Proponents of free markets point out that these measures usually backfire, as the growth of government would create a privileged class such as the nomenklatura
Nomenklatura

The nomenklatura were a small, elite subset of the general population in the Soviet Union and other Eastern Bloc countries who held various key administrative positions in all spheres of those countries' activity: government, industry, agriculture, education, etc....
 in the Soviet Union
Soviet Union

The Union of Soviet Socialist Republics was a Constitution of the Soviet Union socialist state that existed in Eurasia from 1922 to 1991.The name is a translation of the , romanization of Russian Soyuz Sovetskikh Sotsialisticheskikh Respublik, abbreviated ????, SSSR....
 who use their position within the government to gain unequal access to resources, thereby reducing economic equality. Others argue that free markets without these measures allow the already privileged to control the political life of a country as it did in Brazil where the country's military dictatorship (1964-1985) allowed the country to become the most economically unequal in South America.

There are also some market forces
Market Forces

Market Forces is a science fiction novel by Richard Morgan , first published in 2004.Set in 2049 in the wake of a global economic downturn called the Domino Recessions, it follows up and coming executive Chris as he plunges into the profitable field of Conflict Investment....
 which work to reduce economic inequality:

  • In a market-driven economy, too much economic disparity could generate pressure for its own removal. In an extreme example, if one person owned everything, that person would immediately (in a market economy) have to hire people to maintain his property, and that person's wealth would immediately begin to dissipate. (García-Peñalosa 2006)


  • By a concept known as the "decreasing marginal utility
    Marginal utility

    In economics, the marginal utility of a Good or of a Service is the utility of the specific use to which an agent would put a given increase in that good or service, or of the specific use that would be abandoned in response to a given decrease....
     of wealth," a wealthy person will tend not to value his last dollar as much as a poor person, since a poor person's dollars are more likely to be spent for essentials. This could tend to move wealth from the rich to the poor. This is also known as the "trickle down effect
    Trickle-down economics

    "Trickle-down economics" and "trickle-down theory" are terms of political rhetoric that refer to the policy of providing tax cuts or other benefits to businesses and rich individuals, in the belief that this will indirectly benefit the broad population....
    ."


Effects of inequality


Social cohesion

Research has shown a link between income inequality and social cohesion. In more equal societies, people are much more likely to trust
Trust (sociology)

Trust is a relationship of reliance. A trusted party is presumed to seek to fulfill policy, ethics codes, law and their previous promises.Trust does not need to involve belief in the good character, vices, or morals of the other party....
 each other, measures of social capital
Social capital

Social capital is a concept developed in sociology and also used in business, capital , organizational behaviour, political science, public health and natural resources management that refers to connections within and between social networks as well as connections among individuals....
 suggest greater community involvement, and homicide
Homicide

Homicide refers to the act of killing another human being. It can also describe a person who has committed such an act, though this use is rare in modern English....
 rates are consistently lower.

One of the earliest writers to note the link between economic equality and social cohesion was Alexis de Tocqueville
Alexis de Tocqueville

Alexis-Charles-Henri Cl?rel de Tocqueville was a French political philosophy and historian best known for his Democracy in America and The Old Regime and the Revolution ....
 in his Democracy in America
Democracy in America

De la d?mocratie en Am?rique is a Western canon France text by Alexis de Tocqueville on the United States in the 1830s and its strengths and weaknesses....
. Writing in 1831:

Among the new objects that attracted my attention during my stay in the United States, none struck me with greater force than the equality of conditions. I easily perceived the enormous influence that this primary fact exercises on the workings of society. It gives a particular direction to the public mind, a particular turn to the laws, new maxims to those who govern, and particular habits to the governed... It creates opinions, gives rise to sentiments, inspires customs, and modifies everything it does not produce... I kept finding that fact before me again and again as a central point to which all of my observations were leading.


Gini Vs Social Capital in Usa
In a 2002 paper, Eric Uslaner and Mitchell Brown showed that there is a high correlation between the amount of trust in society and the amount of income equality. They did this by comparing results from the question "would others take advantage of you if they got the chance?" in U.S General Social Survey
General Social Survey

The General Social Survey is a statistical survey used to collect data on demographic characteristics and attitudes of residents of the United States....
 and others with statistics on income inequality. Similarly, a 2008 article by Andersen and Fetner finds a strong relationship between economic inequality within and across countries and tolerance for 35 democracies.

Robert Putnam
Robert Putnam

Robert David Putnam is a political science and professor of public policy at the Harvard University John F. Kennedy School of Government. He is also visiting professor and director of the Manchester Graduate Summer Programme in Social Change, University of Manchester ....
, professor of political science at Harvard, established links between social capital
Social capital

Social capital is a concept developed in sociology and also used in business, capital , organizational behaviour, political science, public health and natural resources management that refers to connections within and between social networks as well as connections among individuals....
 and economic inequality. His most important studies (Putnam, Leonardi, and Nanetti 1993, Putnam 2000) established these links in both the United States
United States

The United States of America is a Federal government constitutional republic comprising U.S. state and a federal district. The country is situated mostly in central North America, where its Contiguous United States and Washington, D.C., the Capital districts and territories, lie between the Pacific Ocean and Atlantic Oceans, Borders of the U...
 and in Italy
Italy

Italy , officially the Italian Republic , is a country located on the Italian Peninsula in Southern Europe and on the two largest islands in the Mediterranean Sea, Sicily and Sardinia....
. On the relationship of inequality and involvement in community he says:

Community and equality are mutually reinforcing… Social capital and economic inequality moved in tandem through most of the twentieth century. In terms of the distribution of wealth and income, America in the 1950s and 1960s was more egalitarian than it had been in more than a century… [T]hose same decades were also the high point of social connectedness and civic engagement. Record highs in equality and social capital coincided. Conversely, the last third of the twentieth century was a time of growing inequality and eroding social capital… The timing of the two trends is striking: somewhere around 1965-70 America reversed course and started becoming both less just economically and less well connected socially and politically. (Putnam 2000 pp 359)


In addition to affecting levels of trust and civic engagement, inequality in society has also shown to be highly correlated with crime rates. Most studies looking into the relationship between crime and inequality have concentrated on homicide
Homicide

Homicide refers to the act of killing another human being. It can also describe a person who has committed such an act, though this use is rare in modern English....
s - since homicides are almost identically defined across all nations and jurisdictions. There have been over fifty studies showing tendencies for violence to be more common in societies where income differences are larger. Research has been conducted comparing developed countries with undeveloped countries, as well as studying areas within countries. Daly et al. 2001. found that among U.S
United States

The United States of America is a Federal government constitutional republic comprising U.S. state and a federal district. The country is situated mostly in central North America, where its Contiguous United States and Washington, D.C., the Capital districts and territories, lie between the Pacific Ocean and Atlantic Oceans, Borders of the U...
 States
U.S. state

A U.S. state is any one of the 50 state of the United States that share sovereignty with the federal government of the United States . Because of this shared sovereignty, an United States is a citizen both of the federal entity and of his or her state of Domicile ....
 and Canadian
Canada

Canada is a country occupying most of northern North America, extending from the Atlantic Ocean in the east to the Pacific Ocean in the west and northward into the Arctic Ocean....
 Provinces there is a tenfold difference in homicide rates related to inequality. They estimated that about half of all variation in homicide rates can be accounted for by differences in the amount of inequality in each province or state. Fajnzylber et al. (2002) found a similar relationship worldwide. Among comments in academic literature on the relationship between homicides and inequality are:

  • The most consistent finding in cross-national research on homicides has been that of a positive association between income inequality and homicides. (Neapolitan 1999 pp 260)
  • Economic inequality is positively and significantly related to rates of homicide despite an extensive list of conceptually relevant controls. The fact that this relationship is found with the most recent data and using a different measure of economic inequality from previous research, suggests that the finding is very robust. (Lee and Bankston 1999 pp 50)


Population health

Inequality and Mortality in Metro Us
Recently, there has been increasing interest from epidemiologists
Epidemiology

Epidemiology is the study of factors affecting the health and illness of populations, and serves as the foundation and logic of interventions made in the interest of public health and preventive medicine....
 on the subject of economic inequality and its relation to the health of populations
Population health

Population health has been defined as ?the health outcomes of a group of individuals, including the distribution of such outcomes within the group.? It is an approach to health that aims to improve the health of an entire population....
. There is a very robust correlation between socioeconomic status
Social status

In sociology or anthropology, social status is the honor or prestige attached to one's position in society . The stratification system, which is the system of distributing rewards to the members of society, determines social status....
 and health. This correlation suggests that it is not only the poor who tend to be sick when everyone else is healthy, but that there is a continual gradient, from the top to the bottom of the socio-economic ladder, relating status to health. This phenomenon is often called the "SES Gradient". Lower socioeconomic status has been linked to chronic stress
Stress (medicine)

Stress is a biological term which refers to the consequences of the failure of a human or animal body to respond appropriately to emotional or body threats to the organism, whether actual or imagined....
, heart disease
Heart disease

Heart disease is an umbrella term for a variety for different diseases affecting the heart. As of 2007, it is the leading cause of death in the United States, England, Canada and Wales, killing one person every 34 seconds in the United States alone....
, ulcers
Peptic ulcer

A peptic ulcer, also known as ulcus pepticum, PUD or peptic ulcer disease, is an ulcer of an area of the gastrointestinal tract that is usually acidic and thus extremely painful....
, type 2 diabetes, rheumatoid arthritis
Rheumatoid arthritis

Rheumatoid arthritis is a chronic, systemic disease inflammation that may affect many tissues and organs, but principally attacks the joints producing a inflammatory synovitis that often progresses to destruction of the articular cartilage and ankylosis of the joints....
, certain types of cancer
Cancer

Cancer is a class of diseases in which a group of cell display uncontrolled growth , invasion , and sometimes metastasis . These three malignant properties of cancers differentiate them from benign tumors, which are self-limited, do not invade or metastasize....
, and premature aging.

There is debate regarding the cause of the SES Gradient. A number of researchers (A. Leigh, C. Jencks, A. Clarkwest - see also Russell Sage working papers) see a definite link between economic status and mortality due to the greater economic resources of the wealthy, but they find little correlation due to social status
Social status

In sociology or anthropology, social status is the honor or prestige attached to one's position in society . The stratification system, which is the system of distributing rewards to the members of society, determines social status....
 differences.

Other researchers such as Richard Wilkinson
Richard Wilkinson

Richard Wilkinson may refer to:* Richard Wilkinson , researcher in the field of public health* Richard Norton Wilkinson , judge and political figure in Upper Canada...
, J. Lynch, and G.A. Kaplan have found that socioeconomic status strongly affects health even when controlling for economic resources and access to health care. Most famous for linking social status with health are the Whitehall studies
Whitehall Study

The original Whitehall Study investigated social determinants of health, specifically the cardiovascular disease epidemiology and mortality rates among United Kingdom male civil servants between the ages of 20 and 64....
 - a series of studies conducted on civil servants in London
London

London is the capital of both England and the United Kingdom, and the most populous municipality in the European Union. An important settlement for two millennia, History of London goes back to its founding by the Roman Empire....
. The studies found that although all civil servants in England have the same access to health care, there was a strong correlation between social status and health. The studies found that this relationship remained strong even when controlling for health-affecting habits such as exercise, smoking
Tobacco smoking

Tobacco smoking is the inhalation of smoke from burned dried or cured leaves of the tobacco plant, most often in the form of a cigarette. People may smoke casually for pleasure, habitually to satisfy an addiction to the nicotine present in tobacco and to the act of smoking, or in response to social pressure....
 and drinking
Alcoholic beverage

An alcoholic beverage is a drink containing ethanol . Alcoholic beverages are divided into three general classes: beers, wines, and distilled beverage....
. Furthermore, it has been noted that no amount of medical attention will help decrease the likelihood of someone getting type 2 diabetes or rheumatoid arthritis
Rheumatoid arthritis

Rheumatoid arthritis is a chronic, systemic disease inflammation that may affect many tissues and organs, but principally attacks the joints producing a inflammatory synovitis that often progresses to destruction of the articular cartilage and ankylosis of the joints....
 - yet both are more common among populations with lower socioeconomic status. Lastly, it has been found that amongst the wealthiest quarter of countries on earth (a set stretching from Luxembourg
Luxembourg

Luxembourg , officially the Grand Duchy of Luxembourg , is a small landlocked country in western Europe, bordered by Belgium, France, and Germany....
 to Slovakia
Slovakia

Slovakia . It was amended in September 1998 to allow direct election of the president and again in February 2001 due to EU admission requirements....
) there is no relation between a country's wealth and general population health - suggesting that past a certain level, absolute levels of wealth have little impact on population health, but relative levels within a country do.

The concept of psychosocial stress attempts to explain how psychosocial phenomena such as status
Social status

In sociology or anthropology, social status is the honor or prestige attached to one's position in society . The stratification system, which is the system of distributing rewards to the members of society, determines social status....
 and social stratification
Social stratification

In sociology and anthropology, social stratification is the hierarchy arrangement of social classes, castes and strata within a society. While these hierarchies are not universal to all societies, they are the norm among state-level cultures ....
 can lead to the many diseases associated with the SES Gradient. Higher levels of economic inequality tend to intensify social hierarchies and generally degrade the quality of social relations - leading to greater levels of stress
Stress (medicine)

Stress is a biological term which refers to the consequences of the failure of a human or animal body to respond appropriately to emotional or body threats to the organism, whether actual or imagined....
 and stress-related diseases. Richard Wilkinson found this to be true not only for the poorest members of society, but also for the wealthiest. Economic inequality is bad for everyone's health.

The effects of inequality on health are not limited to human populations. David H. Abbott at the Wisconsin National Primate Research Center found that among many primate species, less egalitarian social structures correlated with higher levels of stress hormones among socially subordinate individuals.

Utility, economic welfare, and distributive efficiency

Economic inequality is thought to reduce distributive efficiency
Distributive efficiency

In welfare economics, distributive efficiency occurs when goods and services are received by those who have the greatest need for them. Abba Lerner first proposed the idea of distributive efficiency in his 1944 book The Economics of Control....
 within society. That is to say, inequality reduces the sum total of personal utility
Utility

In economics, utility is a measure of the relative satisfaction from, or desirability of, consumption of various goods and services. Given this measure, one may speak meaningfully of increasing or decreasing utility, and thereby explain economic behavior in terms of attempts to increase one's utility....
 because of the decreasing
Diminishing returns

In economics, diminishing returns is also called diminishing marginal return or the law of diminishing returns. According to this relationship, in a production system with fixed and variable inputs , beyond some point, each additional unit of variable input yields less and less output....
 marginal utility
Marginal utility

In economics, the marginal utility of a Good or of a Service is the utility of the specific use to which an agent would put a given increase in that good or service, or of the specific use that would be abandoned in response to a given decrease....
 of wealth. For example, a house may provide less utility to a single millionaire as a summer home than it would to a homeless family of five. The marginal utility
Marginal utility

In economics, the marginal utility of a Good or of a Service is the utility of the specific use to which an agent would put a given increase in that good or service, or of the specific use that would be abandoned in response to a given decrease....
 of wealth is lowest among the richest. In other words, an additional dollar spent by a poor person will go to things providing a great deal of utility to that person, such as basic necessities like food, water, and healthcare; meanwhile, an additional dollar spent by a much richer person will most likely go to things providing relatively less utility to that person, such as luxury items. From this standpoint, for any given amount of wealth in society, a society with more equality will have higher aggregate utility. Some studies (Layard 2003;Blanchard and Oswald 2000, 2003) have found evidence for this theory, noting that in societies where inequality is lower, population-wide satisfaction and happiness tend to be higher.

Economist Arthur Cecil Pigou
Arthur Cecil Pigou

Arthur Cecil Pigou was an England economist. As a teacher and builder of the school of economics at Cambridge University he trained and influenced the many Cambridge economists who went on to fill chairs of economics around the world....
 discussed the impact of inequality in The Economics of Welfare. He wrote:
Nevertheless, it is evident that any transference of income from a relatively rich man to a relatively poor man of similar temperament, since it enables more intense wants, to be satisfied at the expense of less intense wants, must increase the aggregate sum of satisfaction. The old "law of diminishing utility" thus leads securely to the proposition: Any cause which increases the absolute share of real income in the hands of the poor, provided that it does not lead to a contraction in the size of the national dividend from any point of view, will, in general, increase economic welfare.
In addition to the argument based on diminishing marginal utility, Pigou makes a second argument that income generally benefits the rich by making them wealthier than other people, whereas the poor benefit in absolute terms. Pigou writes:
Now the part played by comparative, as distinguished from absolute, income is likely to be small for incomes that only suffice to provide the necessaries and primary comforts of life, but to be large with large incomes. In other words, a larger proportion of the satisfaction yielded by the incomes of rich people comes from their relative, rather than from their absolute, amount. This part of it will not be destroyed if the incomes of all rich people are diminished together. The loss of economic welfare suffered by the rich when command over resources is transferred from them to the poor will, therefore, be substantially smaller relatively to the gain of economic welfare to the poor than a consideration of the law of diminishing utility taken by itself suggests. --


Schmidtz
David Schmidtz

David Schmidtz is Kendrick Professor of Philosophy and joint Professor of Economics at the University of Arizona. He earned his PhD at Arizona under the direction of Joel Feinberg and Allen Buchanan and taught at Yale and Bowling Green State University before returning to Arizona....
 (2006) argues that maximizing the sum of individual utilities does not necessarily imply that the maximum social utility is achieved. For example:

A society that takes Joe Rich’s second unit [of corn] is taking that unit away from someone who . . . has nothing better to do than plant it and giving it to someone who . . . does have something better to do with it. That sounds good, but in the process, the society takes seed corn out of production and diverts it to food, thereby cannibalizing itself


Economic incentives

Many people accept inequality as a given, and argue that the prospect of greater material wealth provides incentive
Incentive

In economics and sociology, an incentive is any factor that enables or motivates a particular course of action, or counts as a reason for preferring one choice to the alternatives....
s for competition
Competition

Competition is a rivalry between individuals, groups, nations, or animals, for territory, a niche, or allocation of resources. It arises whenever two or more parties strive for a goal which cannot be shared....
 and innovation
Innovation

The term innovation means a new way of doing something. It may refer to incremental, radical, and revolutionary changes in thinking, products, processes, or organizations....
 within an economy.

Some modern economic theories, such as the neoclassical
Neoclassical economics

Neoclassical economics is a term variously used for approaches to economics focusing on the determination of prices, outputs, and income distribution s in markets through supply and demand, often as mediated through a hypothesized maximization of income-constrained utility by individuals and of cost-constrained profits of firms employing avai...
 school, have suggested that a functioning economy entails a certain level
NAIRU

The term NAIRU is an acronym for Non-Accelerating inflation Rate of unemployment. It is a concept in economics theory significant in the interplay of macroeconomics and microeconomics....
 of unemployment
Unemployment

File:World map of countries by rate of unemployment.pngUnemployment occurs when a person is available to work and currently seeking work, but the person is without Wage labour....
. These theories argue that unemployment benefits must be below the wage
Wage

A wage is a compensation, usually financial, received by a worker Coincidence of wants for their Labor .Compensation in terms of wages is given to worker and compensation in terms of salary is given to employees....
 level to provide an incentive to work, thereby mandating inequality and that additionally, it is impossible to lower unemployment down to zero. Hypotheses such as socialism
Socialism

Socialism refers to a broad set of economic theories of social organization advocating public or state ownership and administration of the means of production and distribution of goods, and a society characterized by equality for all individuals, with a fair or Egalitarianism method of compensation....
, dispute this positive role of unemployment.

Many economists believe that one of the main reasons that inequality might induce economic incentive is because material wellbeing and conspicuous consumption
Conspicuous consumption

Conspicuous consumption is a term used to describe the lavish spending on goods and services acquired mainly for the purpose of displaying income or wealth....
 are related to status
Social status

In sociology or anthropology, social status is the honor or prestige attached to one's position in society . The stratification system, which is the system of distributing rewards to the members of society, determines social status....
. In this view, high stratification of income (high inequality) creates high amounts of social stratification
Social stratification

In sociology and anthropology, social stratification is the hierarchy arrangement of social classes, castes and strata within a society. While these hierarchies are not universal to all societies, they are the norm among state-level cultures ....
, leading to greater competition for status
Social status

In sociology or anthropology, social status is the honor or prestige attached to one's position in society . The stratification system, which is the system of distributing rewards to the members of society, determines social status....
. One of the first writers to note this relationship was Adam Smith
Adam Smith

Adam Smith was a Scotland Ethics and a pioneer of political economy. One of the key figures of the Scottish Enlightenment, Smith is the author of The Theory of Moral Sentiments and The Wealth of Nations....
 who recognized "regard" as one of the major driving forces behind economic activity. From The Theory of Moral Sentiments
The Theory of Moral Sentiments

'The Theory of Moral Sentiments' was written by Adam Smith in 1759. It provided the ethics, philosophical, psychological and methodological underpinnings to Smith's later works, including The Wealth of Nations , A Treatise on Public Opulence , Essays on Philosophical Subjects , and Lectures on Justice, Police, Revenue, and A...
 in 1759:

[W]hat is the end of avarice and ambition, of the pursuit of wealth, of power, and pre-eminence? Is it to supply the necessities of nature? The wages of the meanest labourer can supply them... [W]hy should those who have been educated in the higher ranks of life, regard it as worse than death, to be reduced to live, even without labour, upon the same simple fare with him, to dwell under the same lowly roof, and to be clothed in the same humble attire? From whence, then, arises that emulation which runs through all the different ranks of men, and what are the advantages which we propose by that great purpose of human life which we call bettering our condition? To be observed, to be attended to, to be taken notice of with sympathy, complacency, and approbation, are all the advantages which we can propose to derive from it. It is the vanity, not the ease, or the pleasure, which interests us ().


Modern sociologists and economists such as Juliet Schor
Juliet Schor

Juliet Schor is a Professor of sociology at Boston College. She studies trends in working time and leisure, consumerism, the relationship between work and family, women's issues and economic justice....
 and Robert H. Frank
Robert H. Frank

Robert H. Frank is the Henrietta Johnson Louis Professor of Management and a Professor of Economics at Cornell University S.C. Johnson Graduate School of Management....
 have studied the extent to which economic activity is fueled by the ability of consumption to represent social status. Schor, in The Overspent American, argues that the increasing inequality during the 1980s and 1990s strongly accounts for increasing aspirations of income, increased consumption, decreased savings, and increased debt. In Luxury Fever Robert H. Frank argues that people's satisfaction with their income is much more strongly affected by how it compares with others than its absolute level.

Economic growth

Several recent economists have investigated the relationship between inequality and economic growth
Economic growth

Economic growth is the increase in the amount of the goods and services produced by an economics over time. It is conventionally measured as the percent rate of increase in real gross domestic product, or real GDP....
 using econometrics
Econometrics

Econometrics is concerned with the tasks of developing and applying quantitative or statistical methods to the study and elucidation of economic principles....
.

In their study for the World Institute for Development Economics Research, Giovanni Andrea Cornia and Julius Court (2001) reach policy conclusions as to the optimal distribution of income. They conclude that too much equality (below a Gini coefficient
Gini coefficient

The Gini coefficient is a Statistical_dispersion#Measures_of_statistical_dispersion most prominently used as a income inequality metrics or Wealth condensation....
 of .25) negatively impacts growth due to "incentive traps, free-riding, labour shirking, [and] high supervision costs". They also claim that high levels of inequality (above a Gini coefficient
Gini coefficient

The Gini coefficient is a Statistical_dispersion#Measures_of_statistical_dispersion most prominently used as a income inequality metrics or Wealth condensation....
 of .40) negatively impacts growth, due to "incentive traps, erosion of social cohesion, social conflicts, [and] uncertain property rights". They advocate for policies which put equality at the low end of this "efficient" range.

Robert Barro
Robert Barro

Robert Joseph Barro is an United States classical liberal macroeconomist and the Paul M. Warburg Professor of Economics at Harvard University. He is among the most influential economists in the world according to RePEc....
 wrote a paper arguing that inequality reduces growth in poor countries and promotes growth in rich ones. A number of other researchers have derived conflicting results, some concluding there is a negative effect of inequality on growth and others a positive. Patrizio Pagano used Granger causality
Granger causality

Granger causality is a technique for determining whether one time series is useful in forecasting another. Ordinarily, regressions reflect "mere" correlations, but Clive Granger, who won a Nobel Prize in Economics, argued that there is an interpretation of a set of tests as revealing something about causality....
, a technique that can determine two way interaction between two variables, to attempt to explain these previous findings. Pagano's research suggested that inequality had a negative effect on growth while growth increased inequality. The two-way interaction largely explains the contradiction in past research.

Perspectives regarding economic inequality


There are various schools of thought regarding economic inequality.

Marxism

Marxism
Marxism

Marxism is the political philosophy and practice derived from the work of Karl Marx and Friedrich Engels. Marxism holds at its core a Marxist analysis of Critique of capitalism and a theory of social change....
 favors an eventual society where distribution is based on an individual's needs rather than his ability to produce, social class, inheritance, or other such factors. In such a system inequality would be low or non-existent.

Meritocracy

Meritocracy
Meritocracy

Meritocracy is a -cracy or other organization wherein appointments are made and responsibilities are given based on demonstrated talent and ability , rather than by wealth , family connections , social class privilege , friends , seniority , popularity or other historical determinants of social position and political power....
 favors an eventual society where an individual's success is a direct function of his merit, or contribution. Therefore, economic inequality is beneficial inasmuch as it reflects individual skills and effort, and detrimental inasmuch as it represent inherited or unjustified wealth or opportunities. From a meritocratic point of view, measuring economic equality as one parameter, not distinguishing these two opposite contributing factors, serves no good purpose.

Liberalism

Classical liberals and libertarians generally do not take a stance on wealth inequality, but believe in equality under the law
Legal egalitarianism

Equality before the law or equality under the law or legal egalitarianism is the principle under which each individual is subject to the same laws, with no individual or group having special legal privileges....
 regardless of whether it leads to unequal wealth distribution. Ludwig von Mises
Ludwig von Mises

Ludwig Heinrich Edler von Mises was an Austrian economics, philosopher, and liberalism who had a major influence on the modern libertarianism movement....
 (1996) explains:
The liberal champions of equality under the law were fully aware of the fact that men are born unequal and that it is precisely their inequality that generates social cooperation and civilization. Equality under the law was in their opinion not designed to correct the inexorable facts of the universe and to make natural inequality disappear. It was, on the contrary, the device to secure for the whole of mankind the maximum of benefits it can derive from it. Henceforth no man-made institutions should prevent a man from attaining that station in which he can best serve his fellow citizens.


Libertarian Robert Nozick
Robert Nozick

Robert Nozick was an United States philosopher and Joseph Pellegrino University Professor at Harvard University. He was educated at Columbia University , where he studied with Sydney Morgenbesser, at Princeton University , and Oxford University as a Fulbright Scholar....
 argued that government redistributes wealth by force (usually in the form of taxation), and that the ideal moral society would be one where all individuals are free from force. However, Nozick recognized that some modern economic inequalities were the result of forceful taking of property, and a certain amount of redistribution would be justified to compensate for this force but not because of the inequalities themselves. John Rawls
John Rawls

John Rawls was an United States philosopher and a leading figure in moral and political philosophy.Rawls received the Schock Prize for Logic and Philosophy and the National Humanities Medal in 1999, the latter presented by U.S....
 argued in A Theory of Justice
A Theory of Justice

A Theory of Justice is a widely-read book of political philosophy and ethics by John Rawls. It was originally published in 1971 and revised in both 1975 and 1999....
 that inequalities in the distribution of wealth are only justified when they improve society as a whole, including the poorest members. Rawls does not discuss the full implications of his theory of justice. Some see Rawls's argument as a justification for capitalism
Capitalism

Capitalism is an economic system in which wealth, and the means of producing wealth, are private property and controlled rather than commonly, publicly, or state-owned and controlled....
 since even the poorest members of society theoretically benefit from increased innovations under capitalism; others believe only a strong welfare state
Welfare State

The Welfare State of the United Kingdom was prefigured in the William Beveridge Report in 1942, which identified five "Giant Evils" in society: squalor, ignorance, want, idleness and disease....
 can satisfy Rawls's theory of justice.

Classical liberal Milton Friedman
Milton Friedman

Milton Friedman was an United States economist, statistician and public intellectual, and a recipient of the Nobel Memorial Prize in Economic Sciences....
 believed that if government action is taken in pursuit of economic equality that political freedom would suffer. In a famous quote, he said:

A society that puts equality before freedom will get neither. A society that puts freedom before equality will get a high degree of both.


Arguments based on social justice

Patrick Diamond and Anthony Giddens (professors of Economics and Sociology, respectively) hold that
pure meritocracy
Meritocracy

Meritocracy is a -cracy or other organization wherein appointments are made and responsibilities are given based on demonstrated talent and ability , rather than by wealth , family connections , social class privilege , friends , seniority , popularity or other historical determinants of social position and political power....
 is incoherent because, without redistribution, one generation's successful individuals would become the next generation's embedded caste, hoarding the wealth they had accumulated.


They also state that social justice
Social justice

Social justice, sometimes called civil justice, refers to the concept of a society in which justice is achieved in every aspect of society, rather than merely the administration of law....
 requires redistribution of high incomes and large concentrations of wealth in a way that spreads it more widely, in order to "recognise the contribution made by all sections of the community to building the nation's wealth." (Patrick Diamond and Anthony Giddens
Anthony Giddens

Anthony Giddens, Baron Giddens is a United Kingdom sociology who is renowned for his theory of structuration and his holism view of modern society....
, 27 June 2005, New Statesman)

Claims economic inequality weakens societies

In most western democracies, the desire to eliminate or reduce economic inequality is generally associated with the political left. One practical argument in favor of reduction is the idea that economic inequality reduces social cohesion and increases social unrest, thereby weakening the society.

There is evidence that this is true (see inequity aversion
Inequity aversion

Inequity aversion is the preference for fairness and resistance to inequitable outcomes. The social sciences that study inequity aversion sociology, economics, psychology, and anthropology....
) and it is intuitive, at least for small face-to-face groups of people. Alberto Alesina
Alberto Alesina

Alberto Francesco Alesina is an Italian political economics and has published extensively in major academic journals in economics....
, Rafael Di Tella, and Robert MacCulloch find that inequality negatively affects happiness
Happiness

Happiness is a state of mind or feeling such as contentment, satisfaction, pleasure, or joy. A variety of Philosophy, Religion, Psychology and Biology approaches have been taken to defining happiness and identifying its sources....
 in Europe but not in the United States.

Ricardo Nicolás Pérez Truglia in "Can a rise in income inequality improve welfare?" proposed a possible explanation: some goods might not be allocated through standard markets, but through a signaling mechanism. As long as income is associated with positive personal traits (e.g. charisma), in more heterogeneous-in-income societies income not only buys traditional goods (e.g. food, a house), but it also buys non-market goods (e.g. friends, confidence). Thus, endogenous income inequality may explain a rise in social welfare.

It has also been argued that economic inequality invariably translates to political inequality, which further aggravates the problem. Even in cases where an increase in economic inequality makes nobody economically poorer, an increased inequality of resources is disadvantageous, as increased economical inequality can possibly lead to a power shift due to an increased inequality in the ability to participate in democratic processes.

The main disagreement between the western democratic left and right, is basically a disagreement on the importance of each effect, and where the proper balance point should be. Both sides generally agree that the causes of economic inequality based on non-economic differences (race, gender, etc.) should be minimized. There is strong disagreement on how this minimization should be achieved.

Arguments that inequality is not a primary concern


The acceptance of economic inequality is generally associated with the political right. One argument in favor of the acceptance of economic inequality is that, as long as the cause is mainly due to differences in behavior, the inequality provides incentives that eliminate poverty for all, by pushing the society towards economically healthy and efficient behavior. Capitalists see free competition and individual initiative as crucial to economic prosperity and accordingly believe that eliminating poverty through economic freedom is more important than equalizing poverty through redistribution.

Policy can be considered good if it makes some wealthy people wealthier without making anyone poorer (i.e. a policy which offers a Pareto improvement), even though it increases the total amount of inequality. According to this point of view, discussions of inequality absent any information about absolute levels of wealth are specious, because one population's "poor" may be better off that another's "well-off."

A third argument is that capitalism, especially free market capitalism, results in voluntary transactions among parties. Since the transactions are voluntary, each party at least believes they benefit from the transaction. According to the subjective theory of value
Subjective theory of value

The subjective theory of value is an economic theory of value that holds that "to possess value an object must be both useful and scarce, with the extent of that value dependent upon the ability of an object to satisfy the wants of any given individual....
, both parties will indeed benefit the transaction (assuming there is no fraud or extortion involved).

A fourth argument is that if we are interested in welfare, we should be interested in consumption, not income. Consumption is generally far more equal than income.

A fifth argument is that published income inequality numbers do not reflect welfare transfers. That is, if the US government completely redistributed income, this would have no impact on the Gini coefficient. This means that the "problem" of income inequality is never impacted by redistribution at all.

See also

  • Welfare trap
    Welfare trap

    The welfare trap theory asserts that taxation and welfare systems can jointly contribute to keep people on social insurance. This is also known as the unemployment trap or poverty trap in the United Kingdom....
  • IQ and Global Inequality
    IQ and Global Inequality

    IQ and Global Inequality is a controversial 2006 book by Dr. Richard Lynn, Professor Emeritus of Psychology at the University of Ulster, Northern Ireland, and Dr....
  • Distribution of wealth
    Distribution of wealth

    Distribution of wealth is a comparison of the wealth of various members or groups in a society. It differs from the distribution of income in a manner analogous to the difference between position and speed....
  • Distributive justice
    Distributive justice

    Distributive justice concerns what is Justice#Demands_of_justice_in_distribution_and_retribution or right with respect to the allocation of Good in a society....
  • Global justice
    Global justice

    Global justice is an issue in political philosophy arising from the concern that "we do not live in a just world." Many people are extremely poor, while others are extremely rich....
  • Income disparity
    Income disparity

    Income disparity or wage gap is a term used to describe inequities and asymmetry in the distribution of wealth and income between socio-economic groups within society....
    • Income inequality in the United States
      Income inequality in the United States

      Income inequality in the United States is the extent to which Income in the United States, most commonly measured by Household income in the United States or Personal income in the United States, is distributed in an uneven manner....
    • Male-female income disparity in the USA
      Male-female income disparity in the USA

      Male?female income disparity, also referred to as a "gender gap in earnings", in the United States, also known as the "gender wage gap," the "gender earnings gap" and the "gender pay gap", is used by government agencies and economists to refer to statistics gathered by the U.S....
    • Income inequality metrics
      Income inequality metrics

      The concept of inequality is distinct from that of poverty and fairness. Income inequality metrics or income distribution metrics are used by social scientists to measure the distribution of income, and economic inequality among the participants in a particular economy, such as that of a specific country or of the world in general....
  • List of countries by income equality
    List of countries by income equality

    This is a list of countries or dependencies by income inequality metrics, including Gini coefficients, according to the United Nations and the Central Intelligence Agency ....
  • Positive liberty
    Positive liberty

    Positive liberty refers to having the power and resources to act to fulfill one's own potential, as opposed to negative liberty, which refers to freedom from restraint....
  • Negative liberty
    Negative liberty

    The concept of negative liberty refers to freedom from interference by other people. According to Thomas Hobbes, "a free man is he that in those things which by his strength and wit he is able to do is not hindered to do what he hath the will to do." ...
  • Marx
  • United Nations Millennium Development Goals
    Millennium Development Goals

    The Millennium Development Goals are eight international development goals that 192 United Nations United Nations member states and at least 23 international organizations have agreed to achieve by the year 2015....
  • Human Development Index
    Human Development Index

    The Human Development Index is an index used to rank countries by level of "human development", which usually also implies to determine whether a country is a developed country, developing country....
    , of the United Nations, for a good source to make comparisons between nations. Also includes inequality indexes for almost all countries.
  • Occupational inequality
    Occupational inequality

    Occupational inequality is the unequal treatment of people based on gender or race in the workplace. When researchers study trends in occupational inequality they usually focus on distribution or allocation pattern of groups across occupations, for example, the distribution of men compared to women in a certain occupation....
  • Poverty
    Poverty

    Poverty is the shortage of common things such as food, clothing, shelter and safe drinking water, all of which determine our quality of life. It may also include the lack of access to opportunities such as education and employment which aid the escape from poverty and/or allow one to enjoy the respect of fellow citizens....
     and Cycle of poverty
    Cycle of poverty

    In economics, the cycle of poverty is the "set of factors or events by which poverty, once started, is likely to continue unless there is outside intervention."...
  • Population health
    Population health

    Population health has been defined as ?the health outcomes of a group of individuals, including the distribution of such outcomes within the group.? It is an approach to health that aims to improve the health of an entire population....
  • Population Health Forum
    Population Health Forum

    The Population Health Forum is a group based at University of Washington in Seattle, Washington, and composed of academics, citizens, students, and activists from around North America....
  • Achievement gap
    Achievement gap

    An achievement gap refers to the observed disparity on a number of educational measures between the performance of groups of students, especially groups defined by gender, Race /ethnicity, ability, and socioeconomics status....
  • Digital gap
  • Generation gap
    Generation gap

    The generation gap is a popular term used to describe big differences between people of a younger generation and their elders. This can be defined as occurring "when older and younger people do not understand each other because of their different experiences, opinions, habits and behavior"....
  • Marriage gap
    Marriage gap

    The marriage gap describes observed economic and political disparities between those who are Marriage and those who are Single person. The marriage gap can be compared to, and should not be confused with, the gender gap....
  • Opportunity gap
    Opportunity gap

    Opportunity gap can refer to:*in business, a Market opportunity a company or individual is not addressing*in politics, a euphemism for a lack of equal opportunity...
  • Working Class Education
    Working Class Education

    Children of the working class have a completely different educational experience than children of the middle and upper classes. Because of this, working class children can start out life already behind the curve....
  • Split labor market theory
    Split labor market theory

    Theory OverviewA split labor market is a three-way conflict between the capitalism and two labor groups with the Capitalist seeking to displace higher paid workers by cheaper labor....
  • Race and Inequality
  • Economic mobility
    Economic mobility

    Economic mobility is the ability of an individual or family to improve their economic status, in relation to income and social status, within his or her lifetime or between generations....
  • International inequality
    International inequality

    International inequality is inequality between countries . Economic inequality between rich and poor countries are considerable. According to the United Nations Human Development Report 2004, the GDP per capita in countries with high, medium and low human development was 24,806, 4,269 and 1,184 PPP$, respectively ....
  • Gini coefficient
    Gini coefficient

    The Gini coefficient is a Statistical_dispersion#Measures_of_statistical_dispersion most prominently used as a income inequality metrics or Wealth condensation....
  • Wealth inequality in the United States
    Wealth inequality in the United States

    Wealth inequality in the United States refers to the unequal distribution of finance assets among residents of the United States. Wealth includes the values of homes, automobiles, businesses, savings, and investments....
  • Expenditure cascades
    Expenditure cascades

    DefinitionOver the past few decades, income inequality in the United States has risen dramatically. Top earners have experienced a remarkably rapid income growth while those with lower earnings have experienced much less increase in their income....


General references

Books
  • Patrick Diamond and Anthony Giddens (2005), The New Egalitarianism, Polity Press
  • A.B. Atkinsons and F. Bourguignon (1998), Handbook of Income Distribution, Elsevier
  • Peter Lambert (2002). Distribution and Redistribution of Income. Manchester University Press, 3rd edition. ISBN 0-7190-5732-9
  • Richard Lynn
    Richard Lynn

    Richard Lynn is a United Kingdom Professor Emeritus of Psychology who is known for his views on race and ethnic group differences. Lynn says that there are race and intelligence and sex and intelligence....
     and Tatu Vanhanen
    Tatu Vanhanen

    Tatu Vanhanen is a Professor Emeritus of Political Science at the University of Tampere, Tampere, Finland. Vanhanen is a co-author of IQ and the Wealth of Nations , IQ and Global Inequality , and author of Ethnic Conflicts Explained by Ethnic Nepotism and many other works....
     (2002), IQ and the Wealth of Nations
    IQ and the Wealth of Nations

    IQ and the Wealth of Nations is a controversial 2002 book by Dr. Richard Lynn, Professor Emeritus of Psychology at the University of Ulster, Northern Ireland, and Dr....
    , University of Helsinki, Westport, CT: Praeger. ISBN 0-275-97510-X
  • Arthur Cecil Pigou
    Arthur Cecil Pigou

    Arthur Cecil Pigou was an England economist. As a teacher and builder of the school of economics at Cambridge University he trained and influenced the many Cambridge economists who went on to fill chairs of economics around the world....
    . The Economics of Welfare. I.VIII.3. * Amartya Sen
    Amartya Sen

    Amartya Kumar Sen Order of the Companions of Honour , is a Bengali people Indian economist, philosopher, and a winner of the Nobel Memorial Prize in Economic Sciences in 1998, "for his contributions to welfare economics" for his work on famine, human development theory, welfare economics, the underlying mechanisms of poverty, and political C...
     and James Foster (1997). On Economic Inequality (Radcliffe Lectures). Oxford University Press. ISBN 0-19-828193-5.
  • Richard Wilkinson
    Richard Wilkinson

    Richard Wilkinson may refer to:* Richard Wilkinson , researcher in the field of public health* Richard Norton Wilkinson , judge and political figure in Upper Canada...
     (2005), The Impact of Inequality - how to make sick societies healthier, The New Press, ISBN 1-56584-925-6 (hc.)


Papers
  • .


  • Andersen, Robert and Tina Fetner. 2008. ‘Economic Inequality and Intolerance:
Attitudes toward Homosexuality in 35 Democracies,’ American Journal of Political Science, 52 (4):942-958.

  • .
  • Ravallion, Martin (2005). World Bank
    World Bank

    The World Bank is a bank that provides financial and technical assistance to developing countries for development programs with the stated goal of reducing poverty....
    , 5 May, Policy Research Working Paper no. WPS 3579,
  • Sala-Martin, Xavier (2006). Quarterly Journal of Economics," 121(2), May, pp. 351-397.

External links

  • explores some aspects of inequality using online, downloadable maps and graphics.This paper describes the relationship between poverty and inequality and discusses some of the evidence found. Written by Fernando Bonilla.
  • type="text/javascript">DisplayLink("http://www.demographic-research.org/?http://www.demographic-research.org/volumes/vol8/11/", "'Gini coefficient as a life table function: Computation from discrete data, decomposition of differe.."), which explores the correlation between length of life
    Life expectancy

    Life expectancy is the average number of years of life remaining at a given age. It is the average expected lifespan of an individual. Life expectancy is heavily dependent on the criteria used to select the group....
     and Gini coefficient.
  • Population Health Forum
    Population Health Forum

    The Population Health Forum is a group based at University of Washington in Seattle, Washington, and composed of academics, citizens, students, and activists from around North America....
      - group seeking to improve health by addressing inequality.


  • United Nations Report on the World Social Situation 2005
  • , economics. Harvard.edu
  • , economics. Harvard.edu
  • Remarks by Federal Reserve
    Federal Reserve System

    The Federal Reserve System is the central banking system of the United States. Created in 1913 by the enactment of the Federal Reserve Act, it is a quasi-public banking system that comprises the presidentially appointed Board of Governors of the Federal Reserve System in Washington, D.C.; the Federal Open Market Committee; twelve regiona...
     Chairman Ben Bernanke
    Ben Bernanke

    Ben Shalom Bernanke is the Chairman of the Federal Reserve of the United States Federal Reserve. Bernanke succeeded Alan Greenspan on February 1, 2006....
    , February 6, 2007.
  • Accessed 2007-06-11.
  • from Dollars & Sense
    Dollars & Sense

    Dollars & Sense is a magazine dedicated to providing left-wing perspectives on economics.Published six times a year since 1974, it is edited by a collective of economists, journalists, and activists committed to the ideals of social justice and economic democracy....
     magazine, Nov/Dec 2007
  • studies the trade-offs between earning income and enjoying leisure
  • Website maintained by the Working Group on Extreme Inequality. Includes statistics, news and opinions on the causes and consequences of economic inequality in the U.S.