In a group of people giving obviously wrong answers, a participant begins to match them. Conformity is the adjustment of one’s behavior or beliefs to align with group norms.

Solomon Asch’s line-judgment studies showed how powerful the pressure can be even among strangers. Informational influence occurs when others seem to know better; normative influence occurs when the goal is to avoid rejection. Culture, group size, unanimity, and the difficulty of the task all moderate the effect.

Conformity helps groups coordinate and maintain cohesion, yet it can also suppress dissent and propagate errors. Minority influence research shows that consistent, confident minorities can sometimes shift the majority. Awareness of conformity pressures does not make people immune, but it can prompt deliberate checks against automatic agreement.

• Changing behavior or belief to match a group
• Driven by informational and normative pressures
• Strongest when the group is unanimous
• Can both aid coordination and suppress independent judgment