The experimenter arrives and tells you that the study in which you are about to participate concerns people's visual judgments. She places two cards before you. The card on the left contains one vertical line. The card on the right displays three lines of varying length.
The experimenter asks all of you, one at a time, to choose which of the three lines on the right card matches the length of the line on the left card. The task is repeated several times with different cards. On some occasions the other "subjects" unanimously choose the wrong line. It is clear to you that they are wrong, but they have all given the same answer.
What would you do? Would you go along with the majority opinion, or would you "stick to your guns" and trust your own eyes?
To Asch's surprise, 37 of the 50 subjects conformed to the majority at least once, and 14 of them conformed on more than 6 of the 12 trials. When faced with a unanimous wrong answer by the other group members, the mean subject conformed on 4 of the 12 trials. Asch was disturbed by these results: "The tendency to conformity in our society is so strong that reasonably intelligent and well-meaning young people are willing to call white black. This is a matter of concern. It raises questions about our ways of education and about the values that guide our conduct."
Why did the subjects conform so readily? When they were interviewed after the experiment, most of them said that they did not really believe their conforming answers, but had gone along with the group for fear of being ridiculed or thought "peculiar." A few of them said that they really did believe the group's answers were correct.
Apparently, people conform for two main reasons: because they want to be liked by the group and because they believe the group is better informed than they are. Suppose you go to a fancy dinner party and notice to your dismay that there are four forks beside your plate. When the first course arrives, you are not sure which fork to use. If you are like most people, you look around and use the fork everyone else is using. You do this because you want to be accepted by the group and because you assume the others know more about table etiquette than you do.
Reference:
http://www.age-of-the-sage.org/psychology/social/asch_conformity.html
