Aversive and positive conditioning treatments of homosexuality

Thirty-one male homosexual patients were randomly allocated to receive either aversive therapy, in which unpleasant shocks were associated with pictures of nude males; or positive conditioning, in which pictures of nude women were associated with similar pictures of men and later with pictures of heterosexual relationships. The patients were further randomly allocated to receive either procedure according to a forward or backward conditioning paradigm. Before, 3 weeks and 1 yr following 5 days of treatment, the patients were shown a film containing at 1-min intervals 10-sec segments of pictures of nude women or men. During this and all treatment procedures their penile volume responses were measured.

The positive conditioning technique proved ineffective and hence acted as a placebo treatment control for the aversive therapy. Patients reported significantly greater reduction in homosexual feelings and behaviour following the latter. After both the aversive and the positive conditioning technique, patients showed significantly less penile volume increase to the pictures of men. There was no trend for this change to be greater following aversive therapy. It was concluded that this therapy reduced the secondary reinforcement value of homosexual stimuli but did not alter sexual orientation.