This text provides a comprehensive account of the psychosocial aspects of genetic counseling, combining theoretical and practical approaches with many clinical vignettes. It covers the psychosocial effects of genetic disorders on individuals, couples, and families; counseling techniques and the counseling session agenda; prenatal diagnosis counseling, cancer risk counseling, and genetic counseling with children and adolescents; the psychology of risk interpretation and decision making; and the influence of ethnocultural issues on counselees and counselor.