Triangulating evidence for genetic and environmental components of associations between parental behaviours and aggressive behaviour in children.

ABSTRACT: Parenting behaviours are often linked to childhood aggression, but many studies fail to account for shared genetics or test directionality. Using family-based designs, we control for genetic confounding and examined bidirectional effects across two samples. First, we apply a children-of-twins/siblings design in the Norwegian Mother Father and Child Cohort Study which uses genetic relatedness between family members to separate genetic and environmental components of parent-child associations. Second, we use longitudinal models in the USA-based Early Growth and Development Study, an adoption sample where parents and child are not genetically related, enabling estimation of parent-child associations without genetic confounding.Across both studies, we find evidence for genetic and environmenta

SUBMITTER: Bright JK 

PROVIDER: S-EPMC13473577 | biostudies-literature | 2026 Jul

REPOSITORIES: biostudies-literature