title: ON THE DIFFERENTIATION OF HOMO- OR HETERO-EROTIC INTEREST IN THE MALE: AN OPERANT TECHNIQUE ILLUSTRATED IN A CASE OF A MOTOR-CYCLE FETISHIST.
mesh_terms: D006716:Homosexuality; D006801:Humans; D010262:Paraphilic Disorders; D011581:Psychological Tests
keywords: HOMOSEXUALITY; PSYCHOLOGICAL TESTS; SEX DEVIATION