ADOLESCENT BEHAVIOR: FAMILY AND NON-FAMILY INFLUENCES

我们10年项目的主要目标是研究 发展中的儿童社会环境对某些青少年“过渡”的影响 行为。“在8-10年期间，我们正在进行一次代际间的 研究使用NLSY-青年，考虑到几种类型的家庭 对重要的过渡行为的影响--性行为，吸烟， 酗酒和犯罪 本研究结合了联合收割机的两个创新点。 首先，我们最近确定了以前未定义的亲属关系， NLSY数据中的一些不同水平的生物相关性。 第二，我们扩展了一种行为遗传学方法-- DF分析 （DeFries和Fulker，1985年）--允许控制遗传影响 在环境影响评估中。 分离理论 DF分析的扩展同时考虑了共享和非共享 环境影响。 NLSY文件用于构建 将用于检验家庭假设的措施数目 环境影响。 在以前的工作中，我们应用DF分析使用的亲属关系，在 NLSY-儿童数据集。 定义遗传算法的发展 最初的NLSY-Youth之间的联系支持转型研究 行为与这种新的方法，在一个更广泛的概括 sample. 社会对过渡行为影响的研究进展 没有充分考虑到遗传和环境来源， 混淆，因为我们可以与这些数据和方法。 我们的模特们 遗传和环境影响的一些不同来源， 一个连贯的分析方案

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.