Sheldon Cashdan, Ph.D., is Emeritus Professor of Psychology at the University of Massachusetts, Amherst. He is the author of Abnormal Psychology, Interactional Psychotherapy, and Object Relations Therapy.

Sheldon Cashdan, Ph.D., is Emeritus Professor of Psychology at the University of Massachusetts, Amherst. He is the author of Abnormal Psychology, Interactional Psychotherapy, and Object Relations Therapy.