Abstract
ABSTRACTPhysiological and subjective arousal were measured across 5 sessions, each separated by a day or more, in which males attempted to induce erection through fantasy. Stable individual differences in the capacity to achieve voluntary enhancement of penile tumescence were found. The men who were most able to enhance erection were those who reported the greatest use of sexually arousing fantasy themes. In a second experiment, which employed structured rather than unstructured fantasy, sexual arousal was studied as a function of the content of fantasy and tbe vividness with which participants could form images (as assessed by Beits Q.M.I. Scale). Fantasy themes that had been independently rated as high in erotic value produced greater changes in penile circumference relative to baseline than themes of lower erotic value. Men with vivid imagery were more sexually aroused during fantasy than men with non‐vivid imagery. The interaction between the content and vividness of fantasy was not significant. These results indicate that the extent to which men can induce erection through fantasy depends not only on the sexual themes that the men use during fantasy, but on the vividness of the images they form.
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