Preferential looking to eyes versus mouth in early infancy: heritability and link to concurrent and later development.
Charlotte ViktorssonAna Maria PortugalDanyang LiMaja RudlingMonica Siqueiros SanchezKristiina TammimiesMark J TaylorAngelica RonaldTerje Falck-YtterPublished in: Journal of child psychology and psychiatry, and allied disciplines (2022)
These results suggest that individual differences in infants' preferential looking to eyes versus mouth to a substantial degree reflect genetic variation. The findings provide new leads on both the perceptual basis and the developmental consequences of these attentional biases.