Sex education: a review of its effects.

This paper reviewed 33 empirical studies which assessed the effectiveness of sex education. Methodological issues were considered within six sections: (a) populations, (b) instructors, (c) program formats, (d) time format, (e) program goals, and (f) outcome measures. College students were the most frequently assessed population, followed by educators and counselors, and then medical-school populations. Most investigators did not include control subjects. In the studies which included them, they were usually nonequivalent to the experimental subjects. The results were almost exclusively dependent upon questionnaire data. Only a few studies included a follow-up. In general, the subjects reported gains in sexual knowledge and shifts toward more tolerant and liberal sexual attitudes. However, it was not clear whether or to what extent these changes affected the subjects' behavior. The surprising lack of studies evaluating the effects of sex education on elementary, junior high, and high school students was noted in light of the controversy surrounding the presentation of sex-related information to these populations. In addition to the recommendation that sex education presented to "normal" students who are below the college level should be evaluated, suggestions for future research included the use of equivalent experimental and control subjects, the reporting of instructor characteristics, the specification of program goals, and the inclusion of follow-up evaluations.