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J Res Adolesc. 2016 Mar 1;26(1):45-59. Epub 2014 Aug 20.

A Twin Study of Objective and Subjective Pubertal Timing and Peer Influence on Risk-Taking.


The current study used a behavioral genetic design to test whether three measures of pubertal timing moderated peer influence on risk-taking in a sample of 248 female adolescent twin pairs (Mage =16.0, SD=1.5) from the National Longitudinal Study of Adolescent Health. Peer influence was operationalized as the quasi-causal association between girls' self-reported risk-taking and the risk-taking reported by their friends. Girls with earlier ages at menarche and who perceived themselves as more developed than peers were more susceptible to peer influence on risk-taking. However, age-standardized ratings of body changes did not moderate peer influence. This study highlights distinctions between multiple measures of pubertal timing, using an innovative synthesis of genetically informative data and peer nomination data.

[Available on 2017-03-01]

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