选择题：Psychologists have discovered that even the most i

Psychologists have discovered that even the most independent-minded of us will conform to social pressure when we are with a group of people. In one classie experiment, people were shown a vertical line and asked to find a line of identical length from a selection of three.
You might think that this is an absurdly easy task, and when people perform it by themselvesthey do it very well.
However, psychologists have discovered that we are very easily swayed by the opinions of other people when we do this task in a group. In one study, a group of three people was set up,where two of the people were confederates(同伙)of the experimenter.When the confederates deliberately gave wrong answers,people were often swayed to give the wrong answer also. In fact, 75% of people gave at least one wrong answer, with some people conforming to peer pressure on every occasion.
was set up,where two of the people were confederates(同伙)of the experimenter.When the confederates deliberately gave wrong answers,people were often swayed to give the wrong answer also. In fact, 75% of people gave at least one wrong answer, with some people conforming to peer pressure on every occasion.

But why do people conform in this way? In an easy task like this, it seems that people do not want to step out of line with the prevailing opinion of the group. On more difficult tasks, people also