Abstract

The interaction of several parameters known to influence sexual arousal was investigated in a 2 × 2 × 2 factorial design. Distraction, performance demand, and the sexual explicitness of the arousing film were manipulated, with 32 male subjects randomly assigned to the experimental groups. Sexual arousal was elicited by either an explicit or nonexplicit videotape; level of performance demand was determined by one of two sets of experimental instructions: distraction, a within-subject factor, was produced by tone presentations. Arousal was assessed by both penile tumescence and a continuous subjective measure: marked individual differences were found in the degree to which these measures covaried. The results indicated a strong effect of distraction on tumescence, though none on subjectively reported arousal. Conversely. degree of film explicitness had a marked effect on subjective arousal without influencing tumescence. The performance-demand main effect was nonsignificant; however, a significant distraction x demand interaction for maximum tumescence was evident. Additional analyses indicated the predictive value of certain personality measures.

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