BEHAVIORTHERAPY 18, 265-271, 1987 CASE STUDY Masturbatory Extinction of Deviant Sexual Arousal: A Case Study GEARY S. ALFO1LD University o f Mississippi Medical Center CHARLES MORIN Medical College o f Virginia MARC ATKINS Medical College o f Pennsylvania LAWRENCE SCHOEN University o f Mississippi Center This report describes the treatment of a 27-year-old male heterosexual who exhibited strong sexual arousal to pedophilic and hebephilic, as well as adult female sexual stimuli. Treatment involved repeated presentation of examples of deviant sexual stimuli (via pictorial slides and audiotapes) in the absence of high-level sexual excitation and or- gasm. Significant sexual excitation and orgasm in the presence of the deviant stimuli were avoided by having the patient masturbate to orgasm to normative stimuli, then immediately again to little or no nontactile sexual stimuli, immediately prior to I hour of exposures to the deviant classes of stimuli during which he engaged in physical self- stimulation of his genitalia. Across the following forty such treatment sessions, sexual arousal, assessed by strain-gauge monitoring of penile tumescence, diminished markedly in response to both pedophilic and hebephilic sexual stimuli, while arousal to adult female stimuli remained generally high. The interdependency of pedophilic and he- bephilic arousal patterns was found higher than anticipated and rendered the planned mnitiple-baseline design into an AB design. This methodological error compromised unequivocal attribution of results. The proposed procedure is discussed within the context of classical conditioning and extinction. Portions of this paper were presented at the annual meeting of the Association for Advance- ment of Behavior Therapy, Chicago, November, 1986. Requests for reprints should be sent to 265 0005-7894/87/0265-027151.00/0 Copyright 1987 by Association for Advancement of Behavior Therapy All rights of reproduction in any form reserved.