Solomon Asch

American psychologist

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June 18, 2026

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Solomon Asch was an American psychologist renowned for his groundbreaking experiments on conformity. His studies, conducted in the 1950s, investigated how individuals' beliefs, attitudes, and behaviors are influenced by group pressure. In a classic experiment, Asch presented participants with a simple visual perception task, asking them to identify which of three lines matched a standard line. However, confederates in the group unanimously gave incorrect answers on several trials. Asch found that a significant portion of participants conformed to the incorrect majority, even when the correct answer was obvious. This research highlighted the powerful impact of social influence on individual judgment and decision-making, demonstrating that people often yield to group pressure to fit in or avoid standing out.1

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Stanley Milgram
Education and national conformity studies
Solomon Asch, all of whom greatly influenced the direction of Milgram’s academic career. Of particular interest to Milgram were Asch’s conformity experiments, which showed that individual behaviour can be influenced by group behaviour, with individuals conforming to group perspectives, even when choices made by the…
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Solomon Asch, all of whom greatly influenced the direction of Milgram’s academic career. Of particular interest to Milgram were Asch’s conformity experiments, which showed that individual behaviour can be influenced by group behaviour, with individuals conforming to group perspectives, even when choices made by the…
Read More

halo effect
In 1946, Polish-born psychologist Solomon Asch found that the way in which individuals form impressions of one another involved a primacy effect, derived from early or initial information. First impressions were established as more important than subsequent impressions in forming an overall impression of someone. Participants in the experiment…
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In 1946, Polish-born psychologist Solomon Asch found that the way in which individuals form impressions of one another involved a primacy effect, derived from early or initial information. First impressions were established as more important than subsequent impressions in forming an overall impression of someone. Participants in the experiment…
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personality
Deviation from trait theory
…example, the American social psychologist Solomon Asch has shown that a physically attractive person will tend to be judged as having many other desirable qualities. Asch also demonstrated that, in forming impressions of the personal characteristics of others, observers are most influenced by their first impression. The reason first impressions…
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…example, the American social psychologist Solomon Asch has shown that a physically attractive person will tend to be judged as having many other desirable qualities. Asch also demonstrated that, in forming impressions of the personal characteristics of others, observers are most influenced by their first impression. The reason first impressions…
Read More