A comparison of the accuracy and reactivity of methods of monitoring male sexual behavior

Two self-report methods of monitoring male sexuality have been compared—an ongoing method in the form of a diary card and one eliciting retrospective reports in the form of a monthly sexuality interview. Male volunteers were assigned at random to three testing conditions: (a) diary card and monthly interview for 3 months (N=29); (b) three monthly interviews (N=18); and (c) pre- and postinterview only, separated by 2 months (N=21). The correspondence among frequency reports, quality ratings, and number of sexual problems as obtained in diary card and interview measures was examined for respondents in the first condition, revealing that coital frequency and quality ratings were generally quite similar in the two modes of assessment. Interview responses for all subjects were examined for the existence of differential reactive effects according to the frequency of the assessment regimen. No differences emerged among conditions, although a trend for all groups over time was identified. Implications of the results are considered for clinical trials monitoring the effects of new contraceptive methods on sexual functioning.