ters and Johnson confirmed the near universality of masturbation in their subjects. The sex therapy program developed by Masters and Johnson attempts to help clients by providing appropriate sex information, alleviating anxiety about sexual performance, and facilitating verbal, emotional, and physical communication with sex partners. Thirty years since their first study was published, the contributions of Masters and Johnson on sexual functioning, sexual problems and therapeutic interventions for these problems remains among the most significant work in these areas. While some of their work generated considerable skepticism or outright criticism, they helped to revamp contemporary thinking about sex, including assisting in moving society toward a more open discussion of sexual practices and experiences. ...