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Journal of Adolescent Research
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Individual Variation and Family-Community Ties

A Behavioral Genetic Analysis of the Intergenerational Closure in the Lives of Adolescents

H. Harrington Cleveland

Texas Tech University

Robert Crosnoe

University of Texas at Austin

Intergenerational closure refers to parents’ knowing the parents of their adolescents’ friends. This study treated intergenerational closure—as reported by the parents of adolescent twins—as the dependent variable in a behavioral genetic analysis. The sample consisted of identical and fraternal twin pairs in the National Longitudinal Study of Adolescent Health (Add Health). Models that were fit to twin covariance matrices estimated that additive genetic influences accounted for 44% of the variance in intergenerational closure and shared environmental influences for 44%. These findings provide evidence that the heritable characteristics of adolescents influence the connections between their families and their extrafamilial social networks.

Key Words: intergenerational closure • social capital • genetics • parenting

Journal of Adolescent Research, Vol. 19, No. 2, 174-191 (2004)
DOI: 10.1177/0743558403258268


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