The role of pornography in the etiology of sexual aggression

Despite the public and scientific attention the topic has received, the evidence fora causal link between pornography use and sexual offending remains equivocal. This article critically examines the research literature on the association of pornography and sexual offending, focusing on relevant experimental work. The difficulty of this research is highlighted in a discussion of operational definitions of the term pornography, the choice of proxy measures for sexual offending in experimental research, and the emphasis given sexual assault of adult females over other kinds of criminal sexual behavior such as child molestation, exhibitionism, and voyeurism. We also review the major theoretical perspectives-conditioning, excitation transfer, feminist, and social learning-and some of the hypotheses that can be derived from them. From the existing evidence, we argue that individuals who are already predisposed to sexually offend are the most likely to show an effect of pornography exposure and are the most likely to show the strongest effects. Men who are not predisposed are unlikely to show an effect; if there actually is an effect, it is likely to be transient because these men would not normally seek violent pornography. Finally, we present a Darwinian perspective on the possible relationship between pornography use and sexual aggression. (C) 2000 Elsevier Science Ltd. All rights reserved.