Strong positive identification with a specific group is potentially both functional and dysfunctional for the solidarity of an encompassing larger social system. The impact of strong ethnic group identification upon societal integration is here explored by analyzing data obtained from 515 Negroes as part of the Cornell Studies in Intergroup…

Examined the interrelations of group contextual factors and the occurrence of aggressive behavior in 22 experimental play groups of 7- and 9-year-old African American boys. Found that negative affect, high aversion behavior, high activity level, low group cohesion, and competitiveness were related to the occurrence of aggressive behavior. (MDM)