ABSTRACT
Willard Wert Hartup’s professional career spans more than four decades of rapid growth in developmental psychology. As witness to and participant in many of the critical intellectual crossroads confronting this generation of child psychologists, his bibliography is a case study of past and current trends in the field. Nowhere is this better illustrated than in research on children’s close relationships. Hartup nurtured and guided the nascent study of peer relationships; his name is synonymous with the notion that friendship is a developmental boon.
