X-rated material and perpetration of sexually aggressive behavior among children and adolescents: is there a link? (2011)

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COMMENTS: Taken from - The Impact of Internet Pornography on Adolescents: A Review of the Research:

Data were collected over a span of 36 months and collected in three waves.This study suggests that adolescents who are intentionally exposed to violent sexually explicit material were six times more likely to be sexually aggressive than those who were not exposed. In contrast, adolescents who were exposed to nonviolent sexually explicit material “are statistically equally likely to report sexually aggressive behavior compared to those who report no consumption of nonviolent” (p. 14) sexually explicit material.

Aggress Behav. 2011 Jan-Feb;37(1):1-18.

Ybarra ML, Mitchell KJ, Hamburger M, Diener-West M, Leaf PJ.


Internet Solutions for Kids, Santa Ana, California 92705, USA. Michele@ISolutions4kids.org


Longitudinal linkages between intentional exposure to x-rated material and sexually aggressive behavior were examined among youth 10-15 year olds surveyed nationally in the United States.

At Wave 1 in 2006, participants (n = 1,588) were queried about these exposures and outcomes in the preceding 12 months. Wave 2 data (n = 1,206) were collected approximately 12 months after Wave 1 and Wave 3 data (n = 1,159) were collected approximately 24 months after Wave 1.

Thus, data for this project represent a 36-month time frame. A marginal model with generalized estimating equations was used to represent the population-average odds of sexually aggressive behavior over the 36 months as a function of exposure to x-rated material over the same time and to account for clustering in the data within person over time.

An average of 5% of youth reported perpetrating sexually aggressive behavior and 23% of youth reported intentional exposure to x-rated material. After adjusting for other potentially influential proximal (i.e., sexual aggression victimization) and distal characteristics (e.g., substance use), we found that intentional exposure to violent x-rated material over time predicted an almost 6-fold increase in the odds of self-reported sexually aggressive behavior (aOR: 5.8, 95% CI: 3.2, 10.5), whereas exposure to nonviolent x-rated material was not statistically significantly related (aOR: 1.7, 95% CI: 0.94, 2.9).

Associations were similar for boys and girls (boys nonviolent x-rated material aOR = 2.0, 95% CI: 0.8, 4.7; violent x-rated material aOR = 6.5, 95% CI: 2.7, 15.3; girls nonviolent x-rated material aOR = 1.2, 95% CI: 0.5, 3.2; violet x-rated material aOR = 6.1, 95% CI: 2.5, 14.8).

© 2010 Wiley-Liss, Inc.