Dissociable genetic influences on eye movements during abstract versus naturalistic social scene viewing in infancy.

ABSTRACT: Eye-movement metrics like fixation location and duration are increasingly being used in infancy research. We tested whether fixation durations during meaningful social stimulus viewing involve common or different familial influences than fixation durations during viewing of abstract stimulus. We analysed the duration of fixations, and the allocation of fixations to face and motion, from 536 dizygotic and monozygotic 5-month-old twins in: naturalistic scenes including low- and high-level social features, and abstract scenes only having low-level features. We observed significant genetic influences in both conditions (h²_naturalistic = 0.30, 95% confidence interval (CI) 0.14 to 0.44; h²_abstract = 0.25, 95% CI 0.09 to 0.39), while shared environmenta

SUBMITTER: Portugal AM 

PROVIDER: S-EPMC11791049 | biostudies-literature | 2025 Feb

REPOSITORIES: biostudies-literature