Ongoing concern about effects of sexually explicit materials includes the role of such material in sex offenses. Issues include sex offenders' experiences with pornography and the link between pornography and sex crime rates. Review of the literature shows that sex offenders typically do not have earlier or more unusual exposure to pornography in childhood or adolescence, compared to nonoffenders. However, a minority of offenders report current use of pornography in their offenses. Rape rates are not consistently associated with pornography circulation, and the relationships found are ambiguous. Findings are consistent with a social learning view of pornography, but not with the view that sexually explicit materials in general contribute directly to sex crimes. The effort to reduce sex offenses should focus on types of experiences and backgrounds applicable to a larger number of offenders.