conducted an experiment in which he demonstrated that the power of groups can be so great that they may override our previously held judgments and perceptions.

Solomon Asch

Explanation:

Solomon Asch is a Polish-American psychologist who is well know for his social experiment popularly know as Asch's conformity experiment. He demonstrated that social influence from a group may cause an individual to abandon a previous perception or decision. An individual may be compel to conform to the view or belief of a large group or society against his previous belief