In the absence of information to the contrary, an individual tends to assume that members of an out group have values which differ from his own. The effect is even more marked for highly prejudiced persons. In the present paper two experiments are reported which extend the belief similarity hypothesis. (Author)

Proposes that many works of art can be viewed as the products of a group and not just the individual artist. Examines the life history of a group of impressionist painters. Discusses how a group develops over time, group processes, and how the group contributes to artistic development. (RC)