“…that participation in the weekly assessments does not bias either the sexual activity of the individual or the individual's ability to recall sexual activity on a long-term basis. Evidence for the absence of such testing effects on risk behavior has been provided in several studies, both in the sexual domain (Fujita, 1971;Kunin & Ames, 1981;Rubin & Mitchell, 1976) and in other areas of study (Gersovitz, Madden, & Smickilas-Wright, 1978;Smith, Jobe, & Mingay, 1991). For example, Halpern, Udry and Suchindran (1991) found no evidence for monitoring effects when comparing adolescents who were monitored on a weekly basis for two years with non-monitored controls.…”