The increasing number of individuals and couples seeking help for psychosexual difficulties presents a challenge to the helping profes sions. Although considerable progress has been made over the past twenty years in the development of therapy approaches, there remains a significant proportion of cases who fail to respond to treatment or whose improvement in sexual functioning is short-lived. It is suggested that such limitations of therapy reflect our lack of understanding of the psychosocial determinants of sexual responding. Whereas the biological determinants are now well understood, much...