Genetic contribution to intrinsic functional connectivity underlying general intelligence: evidence from adult twin study.

ABSTRACT: Resting-state functional connectivity has been linked to intelligence, and twin studies suggest that these associations may be influenced by genetic factors. To investigate this relationship, we analysed behavioural and resting-state functional magnetic resonance imaging data from young adult twins in the Human Connectome Project. General intelligence was assessed based on ten cognitive task performances. The results showed a positive correlation in both identical and fraternal twins, indicating a similarity of general intelligence among twin pairs. For the resting-state functional connectivity analysis, we conducted two approaches. In the first approach, twins were randomly assigned to two separate groups, ensuring that each pair was split between the groups. We then applied a connectome-

SUBMITTER: Guragai B 

PROVIDER: S-EPMC12674170 | biostudies-literature | 2025

REPOSITORIES: biostudies-literature