The first volume in this new series from The Center for the Study of Child and Adolescent Development at The Pennsylvania State University focuses on the relationship between the biological stress circuits and the behavioral concomitants to stress in animals and humans. The participants at this conference, a tribute to Dean Evan G. Pattishall, Jr., discuss the developmental implications of their work in relation to the periods of infancy, childhood, and adolescence. For professionals, clinicians, and researchers in clinical, developmental, experimental, and health psychology, behavioral medicine, psychiatry, psychotherapy, and the neurosciences.