Sexual behavior and nonsexual deviance: A sibling study of their relationship.

Analyzed the correlation of nonsexual deviance and physical, sexual behavior using a sibling design. Hypothesized that both types of behavior are partly determined by a latent trait of deviance proneness, d. In two separate studies—one based on an Oklahoma dataset of college students and their siblings, and the other, on the Adolescent Sexuality Project ({adsex}) dataset of high-school students and their siblings in Tallahassee, Florida—found a strong relationship between relatively early sexual intimacy and nonsexual forms of deviance. Siblings were more alike than chance in deviance and in physical sexual behavior. Most critical for the model, there was also an association between one sibling's sexual intimacy with a partner and the other's deviance. Using {lisrel}, tested the latent-trait model statistically and accepted it as consistent with the obtained correlations. (PsycINFO Database Record (c) 2010 APA, all rights reserved)