Group Size - He wanted to see if the group size would be more important than the agreement of the group. Asch found that with three confederates conformity to the answer was 31.8%. This suggests majority is not sufficient for influence to be exerted.
Unanimity - Asch also wanted to know if presence of another, non-conforming, person would affect the naïve participant’s conformity. To test this, he introduced a confederate who disagreed with the others – sometimes the new confederate gave the correct answer and sometimes the wrong one. The presence of a dissenting confederate led to reduced conformity.
Task Difficulty - Asch made the line judging task more difficult by making the stimulus line and the comparison lines more similar in length. He found that conformity increased under these circumstances. This implies that informational social influence plays a greater role when the tasks become harder.
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