Pluralistic ignorance
Encyclopedia
In social psychology
Social psychology
Social psychology is the scientific study of how people's thoughts, feelings, and behaviors are influenced by the actual, imagined, or implied presence of others. By this definition, scientific refers to the empirical method of investigation. The terms thoughts, feelings, and behaviors include all...

, pluralistic ignorance, a term coined by Daniel Katz and Floyd H. Allport in 1931, describes "a situation where a majority of group members privately reject a norm,
but assume (incorrectly) that most others accept it...It is, in Krech and Crutchfield’s (1948, pp. 388–89) words, the situation where 'no one believes,
but everyone thinks that everyone believes.'". This, in turn, provides support for a norm that may be, in fact, disliked by most people.

Pluralistic ignorance can be contrasted with the false consensus effect
False consensus effect
In psychology, the false consensus effect is a cognitive bias whereby a person tends to overestimate how much other people agree with him or her. There is a tendency for people to assume that their own opinions, beliefs, preferences, values and habits are 'normal' and that others also think the...

. In pluralistic ignorance, people privately disdain but publicly support a norm (or a belief), while the false consensus effect causes people to wrongly assume that most people think like them, while in reality most people do not think like them (and express the disagreement openly). For instance, pluralistic ignorance may lead a student to drink alcohol excessively because she believes that everyone else does that, while in reality everyone else also wish they could avoid binge drinking, but no one expresses that due to the fear of being ostracized. A false consensus for the same situation would mean that the student believes that most other people do not enjoy excessive drinking, while in fact most other people do enjoy that and openly express their opinion about it.

Consequences of pluralistic ignorance

Pluralistic ignorance was blamed for a perception (among American whites) that grossly exaggerated the support of other American whites for segregation in the 1960s. It has also been named a reason for the illusionary popular support that kept the communist regime in the Soviet Union
Soviet Union
The Soviet Union , officially the Union of Soviet Socialist Republics , was a constitutionally socialist state that existed in Eurasia between 1922 and 1991....

, as many opposed the regime but assumed that others were supporters of it. Thus, most people were afraid to voice their opposition. Witch hunts in the past and during the Cold War
Cold War
The Cold War was the continuing state from roughly 1946 to 1991 of political conflict, military tension, proxy wars, and economic competition between the Communist World—primarily the Soviet Union and its satellite states and allies—and the powers of the Western world, primarily the United States...

 (as recently as the 1950s) and assaults on homosexuals could be other cases of pluralistic ignorance.

In a series of studies conducted to test the effect of pluralistic ignorance, Prentice and Miller studied the consequences of pluralistic ignorance at Princeton University
Princeton University
Princeton University is a private research university located in Princeton, New Jersey, United States. The school is one of the eight universities of the Ivy League, and is one of the nine Colonial Colleges founded before the American Revolution....

. They found that, on average, private levels of comfort with drinking practices on campus were much lower than the perceived average. In the case of men, they found a shifting of private attitudes toward this perceived norm, a form of cognitive dissonance
Cognitive dissonance
Cognitive dissonance is a discomfort caused by holding conflicting ideas simultaneously. The theory of cognitive dissonance proposes that people have a motivational drive to reduce dissonance. They do this by changing their attitudes, beliefs, and actions. Dissonance is also reduced by justifying,...

. Women, on the other hand, were found to have an increased sense of alienation on the campus but lacked the attitude change detected in men, presumably because norms related to alcohol consumption on campus are much more central for men than for women. Research has shown that pluralistic ignorance plagues not only those who indulge, but also those who abstain: from gambling, smoking, and drinking and among some who follow vegetarianism
Vegetarianism
Vegetarianism encompasses the practice of following plant-based diets , with or without the inclusion of dairy products or eggs, and with the exclusion of meat...

. The latter has found that Pluralistic Ignorance can be caused by the structure of the underlying social network
Social network
A social network is a social structure made up of individuals called "nodes", which are tied by one or more specific types of interdependency, such as friendship, kinship, common interest, financial exchange, dislike, sexual relationships, or relationships of beliefs, knowledge or prestige.Social...

, not cognitive dissonance
Cognitive dissonance
Cognitive dissonance is a discomfort caused by holding conflicting ideas simultaneously. The theory of cognitive dissonance proposes that people have a motivational drive to reduce dissonance. They do this by changing their attitudes, beliefs, and actions. Dissonance is also reduced by justifying,...

.

Pluralistic ignorance may partially explain the bystander effect
Bystander effect
The bystander effect or Genovese syndrome is a social psychological phenomenon that refers to cases where individuals do not offer any means of help in an emergency situation to the victim when other people are present...

: the observation that people are more likely to intervene in an emergency situation when alone than when other persons are present. If people monitor the reactions of others in such a situation, they may conclude from the inaction of others that other people think that it is not necessary to intervene. Thus no one may take any action, even though some people privately think that they should do something. On the other hand, if one person intervenes, others are more likely to follow and give assistance.

See also

  • Abilene paradox
    Abilene paradox
    The Abilene paradox is a paradox in which a group of people collectively decide on a course of action that is counter to the preferences of any of the individuals in the group. It involves a common breakdown of group communication in which each member mistakenly believes that their own preferences...

  • Conformity
    Conformity
    Conformity is the process by which an individual's attitudes, beliefs, and behaviors are influenced by other people.Conformity may also refer to:*Conformity: A Tale, a novel by Charlotte Elizabeth Tonna...

  • Groupthink
    Groupthink
    Groupthink is a psychological phenomenon that occurs within groups of people. It is the mode of thinking that happens when the desire for harmony in a decision-making group overrides a realistic appraisal of alternatives. Group members try to minimize conflict and reach a consensus decision without...

  • False consensus
  • Spiral of silence
    Spiral of silence
    The spiral of silence is a political science and mass communication theory propounded by the German political scientist Elisabeth Noelle-Neumann...

  • Social norms marketing
    Social Norms Marketing
    The social norms approach, or social norms marketing,is an environmental strategy gaining ground in health campaigns.While conducting research in the mid 1980s, two researchers, H.W. Perkins and A.D. Berkowitz, discovered that students at a small U.S. college held exaggerated beliefs about the...

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