aim - to see if people will conform to group pressure when they do know the correct answer.
method - he got participants in a room to do an "eye test" they judged the length of a line but the rest of the group were actors who would say the wrong answer. THe real participants went at the end to see if they would conform.
results - 1/3 of the time. 75% conformed at least once
strength - future research
weakness - biased, ethical issues, confederates.