Genetic and Environmental Influences on Family Relationships

行为遗传学领域已经证明，遗传影响着人们在许多方面的行为差异，包括认知能力、个性和精神病理学。然而，对于遗传因素在多大程度上影响成对个体的行为互动，人们知之甚少。从儿童发展的角度来看，一些最重要的相互作用发生在家庭内部，但从行为遗传学的角度来看，对这种家庭关系基本上一无所知。本研究将扩展到青少年早期的科罗拉多兄弟姐妹研究（CSS），其重点是家庭和家庭外关系的社会环境。中国社会科学院此前曾研究过儿童早期和中期非收养和收养兄弟姐妹的家庭关系。这项关于青少年早期的研究将调查非共享环境和遗传对父母和兄弟姐妹关系的影响。这项研究是长期科罗拉多州收养项目的一部分，这使得研究家庭关系的前因后果以及考虑遗传在这些关系中的作用成为可能。

The field of behavioral genetics has demonstrated that heredity influences differences among people for many aspects of behavior, including cognitive abilities, personality, and psychopathology. However, little is known about the extent to which genetic factors influence behavioral interactions for pairs of individuals. From the perspective of child development, some of the most important interactions are those within the family, yet essentially nothing is known about such family relationships from the perspective of behavioral genetics. This research will extend into early adolescence the Colorado Sibling Study (CSS) which focuses on the social environment of familial and extra-familial relationships. The CSS has previously studied family relationships for nonadoptive and adoptive siblings in early and middle childhood. This research on early adolescence will investigate nonshared environment and genetic influence on parent and sibling relationships. This study is embedded within the long-term Colorado Adoption Project, which makes it possible to study antecedents and consequences of family relationships and to consider the role of heredity in these associations.