In a series of studies by solomon asch (1951, 1956), when participants judged the lengths of lines alone rather than in a group of confederates, their judgments were accurate about 99 percent of the time. still, when other participants made judgments in a group of people who gave the wrong answers, they reported incorrect judgments. these findings suggest that

normative social influence was at work.                                                                              

Explanation:

Normative social influence: The term refers to the process of an individual that tends to conform to a particular group norms to fit in that group, because of the desire to be accepted by that particular group and to feel good.

Example: Peer pressure.

In other words, the normative Social Influence is referred to as the Need to be accepted in a specific group. Individuals usually change their behavior to match with the group.

In the question above, the findings suggest that normative social influence was at work.