Conformity is a form of social influence where group pressure, real or imagined, results in a change in behaviour.
The pressure from the group can be a membership group, which are groups we belong to, or a reference group, which are groups we do not belong to but admire.
Conformity is often referred to as majority influence.
Asch's key study was more interested in whether people would conform to a group even if it meant doing something that was clearly wrong.
The original study had six participants, but the number of participants varied in later studies to see the effect.
Asch's research was highly scientific with controlled conditions, making it easy to replicate and test the findings, making it highly reliable.
Asch's research used only male US participants, making his results unrepresentative and unable to be generalised.
Participants in Asch's research knew they were in a study and the correct answer was unambiguous, which may have led to people conforming simply to benefit the study, known as demand characteristics, making his findings unreliable.
Asch conducted several variations to his experiment to investigate what factors may affect the conformity rate.