Figure 9.1 | Results of Sherif’s Study of Conformity | When the three participants in Sherif’s study were alone in the laboratory room on the first day, their estimates of the apparent movement of the stationary point of light varied greatly. However, once they were all together in the laboratory room from the second through the fourth day and could hear one another, their estimates converged. By the fourth day, they were all making the same judgments.
(Data from Sherif, M. & Sherif, C.W. (1969) Social Psychology. New York: Harper and Row, p. 209.)