Elisabeth M. Dykens, Ph.D., is a child clinical psychologist who has worked with individuals with many different disorders, both clinically and in research. She is particularly interested in the interconnections among genes, brain, and behavior -more specifically, in maladaptive behavior-psychopathology in individuals who have Prader-Willi syndrome, Williams syndrome, or other disorders. Co-author of "Behavior and Development in Fragile X Syndrome" (Sage Publications, 1994), Dr. Dykens has also published numerous studies on the behavior of people with mental retardation. She is a member of the...