A young woman comes to therapy alone. She has been dating a man for almost a year and they recently began having sexual relations. Although the woman is sexually aroused during intercourse, she is unable to achieve orgasm through either intercourse or clitoral stimulation. The woman says that, while this is her first experience with intercourse, she has masturbated to orgasm several times. In treating the woman, a therapist using Masters and Johnson's approach to sex therapy is most likely...