Over the course of a long and distinguished career, psychologist and psychoanalyst Sidney J. Blatt has made major contributions to cognitive-developmental theory, psychoanalytic object relations theory, applied psychoanalysis, and current research in the areas of psychopathology and psychotherapy. This book presents chapters by Dr. Blatt’s many colleagues and students who address the key areas in which Dr Blatt focuses his intellectual endeavours: *Personality development *Psychopathology *Issues in psychological testing and assessment *Psychotherapy and the treatment process *Applied psychoanalysis and broader cultural trends Relatedness, Self-Definition and Mental Representation explores Dr. Blatt’s unique contributions within both psychoanalysis, where empirical research is often neglected, and clinical psychology, where psychoanalysis is increasingly ignored. It will be engaging reading for psychoanalysts and clinical psychologists, as well as all those concerned with psychotherapy and personality theory and development.