Paulina F. Kernberg, M.D., who passed away in 2006, was director of Cornell University Medical School's residency training program in child and adolescent psychiatry in Westchester. Her previous book, "Personality Disorders in Children and Adolescents" (2000), coauthored with Alan S. Weiner and Karen K. Bardenstein, examined the origins of narcissistic and antisocial disorders. Bernadette Buhl-Nielsen, M.D., is a Child and Adolescent Psychiatrist at Glostrup University Hospital, Denmark. Lina Normandin, Ph.D., is Professor of Psychology at Universite Laval, Quebec, Canada.