The specific aspects of behavior that are affected by therapy, as well as the efficacy, limitations, and side effects of treatment need to be determined (Briken, Hill, & Berner, 2003; Raymond, Robinson, Kraft, Rittberg, & Coleman, 2001). The present study assessed the impact of cognitive-behavioral psychotherapy alone versus cognitive-behavioral psychotherapy augmented with a potent testosterone-lowering drug, LA, for suppression of pedophilic urges and arousability. The psychotherapy program comprised cognitive and behavioral therapy. Objective assessments of sexual interest preference and physical arousal, as well as sexual urges and masturbation, were monitored before, during, and after therapy. The research objectives were to explore the relationship between testosterone level and sexual interest preferences, physiologic responses to sexual stimuli (auditory and visual), and self-reported sexual behaviors.