Maslow's hierarchy of needs
Overview
Maslow's hierarchy of needs is a theory in psychology
Psychology
Psychology is the study of the mind and behavior. Its immediate goal is to understand individuals and groups by both establishing general principles and researching specific cases. For many, the ultimate goal of psychology is to benefit society...

, proposed by Abraham Maslow
Abraham Maslow
Abraham Harold Maslow was an American professor of psychology at Brandeis University, Brooklyn College, New School for Social Research and Columbia University who created Maslow's hierarchy of needs...

 in his 1943 paper A Theory of Human Motivation. Maslow subsequently extended the idea to include his observations of humans' innate curiosity. His theories parallel many other theories of human developmental psychology
Developmental psychology
Developmental psychology, also known as human development, is the scientific study of systematic psychological changes, emotional changes, and perception changes that occur in human beings over the course of their life span. Originally concerned with infants and children, the field has expanded to...

, all of which focus on describing the stages of growth in humans.

Maslow studied what he called exemplary people such as Albert Einstein
Albert Einstein
Albert Einstein was a German-born theoretical physicist who developed the theory of general relativity, effecting a revolution in physics. For this achievement, Einstein is often regarded as the father of modern physics and one of the most prolific intellects in human history...

, Jane Addams
Jane Addams
Jane Addams was a pioneer settlement worker, founder of Hull House in Chicago, public philosopher, sociologist, author, and leader in woman suffrage and world peace...

, Eleanor Roosevelt
Eleanor Roosevelt
Anna Eleanor Roosevelt was the First Lady of the United States from 1933 to 1945. She supported the New Deal policies of her husband, distant cousin Franklin Delano Roosevelt, and became an advocate for civil rights. After her husband's death in 1945, Roosevelt continued to be an international...

, and Frederick Douglass
Frederick Douglass
Frederick Douglass was an American social reformer, orator, writer and statesman. After escaping from slavery, he became a leader of the abolitionist movement, gaining note for his dazzling oratory and incisive antislavery writing...

 rather than mentally ill or neurotic people, writing that "the study of crippled, stunted, immature, and unhealthy specimens can yield only a cripple psychology and a cripple philosophy."
Maslow studied the healthiest 1% of the college student population.

Maslow's theory was fully expressed in his 1954 book Motivation and Personality.
Maslow's hierarchy of needs is often portrayed in the shape of a pyramid, with the largest and most fundamental levels of needs at the bottom, and the need for self-actualization at the top.

The most fundamental and basic four layers of the pyramid contain what Maslow called "deficiency needs" or "d-needs": esteem, friendship and love, security, and physical needs.
 
x
OK