Genetics, the Rearing Environment, and the Intergenerational Transmission of Divorce: A Swedish National Adoption Study.

ABSTRACT: We used classical and extended adoption designs in Swedish registries to disentangle genetic and rearing-environment influences on the intergenerational transmission of divorce. In classical adoption analyses, adoptees ( n = 19,715) resembled their biological parents, rather than their adoptive parents, in their history of divorce. In extended adoption analyses, offspring ( n = 82,698) resembled their not-lived-with fathers and their lived-with mothers. There was stronger resemblance to lived-with mothers, providing indirect evidence of rearing-environment influences on the intergenerational transmission of divorce. The heritability of divorce assessed across generations was 0.13. We attempted to replicate our findings using within-generation data from adoptive and biological siblings ( ns

SUBMITTER: Salvatore JE 

PROVIDER: S-EPMC5854499 | biostudies-literature | 2018 Mar

REPOSITORIES: biostudies-literature