ADOLESCENT BEHAVIOR: FAMILY AND NON-FAMILY INFLUENCES

我们十年项目的总体目标是研究 发展中的儿童社会环境对某青少年“转型”的影响 在8-10岁期间，我们正在进行一项代内调查 使用NLSY-青年版考虑几种类型的家庭的研究 对重要的转变行为的影响--性行为、吸烟、 酗酒和犯罪。在本研究中，我们结合了两个创新。 首先，我们最近发现了以前未定义的亲属关系 NLSY提供了许多不同程度的生物相关性的数据。 其次，我们扩展了一种行为遗传学方法--DF分析 (DeFries and Fulker，1985)--允许控制遗传影响 在环境影响评估中。单独的理论 DF分析的扩展同时考虑了共享和非共享 环境影响。NLSY文件被用来构建一个 将用来检验家庭假说的指标的数量 环境影响。 在以前的工作中，我们使用中的亲属关系链接应用了DF分析 NLSY-子项数据集。一种定义基因的算法的发展 原创NLSY之间的链接-青年支持过渡研究 使用这一新方法的行为具有更广泛的概括性 样本。社会对转型行为影响的研究现状 没有充分考虑到遗传和环境来源 令人困惑，因为我们可以使用这些数据和方法。我们的模型统一了一个 遗传和环境影响的不同来源 单一的连贯分析方案。

The broad goal of our 10 year project has been to study influences from a developing child's social environment on certain adolescent "transition behaviors." During years 8-10 we are conducting an Intra-Generational Study using the NLSY-Youth that considers several types of family influence On important transition behaviors--sexuality, smoking, drinking, and delinquency. We combine two innovations in this research. First, we have recently identified previously undefined kinship links in the NLSY data for a number of different levels of biological relatedness. Second, we have extended a behavioral genetic approach -- DF Analysis (DeFries and Fulker, 1985) -- that permits control of genetic influences in the assessment of environmental influences. Separate theoretical extensions of DF Analysis account for both shared and nonshared environmental influences. The NLSY files are being used to construct a number of measures that will be used to test hypotheses of family environmental influence. In previous work we applied DF Analysis using the kinship links in the NLSY-Children dataset. The development of an algorithm to define genetic links among the original NLSY-Youth supports research on transition behaviors with this new methodology in a more broadly generalizable sample. Past research on the social influences on transition behaviors has not adequately accounted for genetic and environmental sources of confound, as we can with these data and methods. Our models unite a number of distinct sources of genetic and environmental influence into a single coherent analytic scheme.