Thomas J. Berndt’s scientific contributions

explore the effects of friendship quality on the social development of children and adolescents / evaluate the strategies that researchers have used to investigate these effects / when examining these strategies, . . . use 3 phrases repeatedly: friendship features, friendship quality, and the effects of friendship / begins with a summary of 2 theories that sparked the initial research on children's friendships / discuss steps researchers might follow when studying the effects of friendship quality early theories of the effects of friendship [Piaget on reciprocity norms and love, H. Sullivan on love and friendship] / what are the correlates of variations in friendship quality / does friendship quality predict changes in self-esteem and behavior / are there better ways to evaluate the effects of friendship quality (PsycINFO Database Record (c) 2012 APA, all rights reserved)