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Twin Study Finds Genetics Affects Where Children Look, Shaping Mental Development

The image caption followsA new study co-led by Indiana University that tracked the eye movement of twins finds that genetics plays a strong role in how people attend to their environment. Conducted in collaboration with researchers from the Karolinska Institute in Sweden, the study offers a new angle on the emergence of differences between individuals and the integration of genetic and environmental factors in social, emotional and cognitive development. This is significant because visual exploration is also one of the first ways infants interact with the environment, before they can reach or crawl. “The majority of work on eye movement has asked ‘What are the common features that drive our attention?'” said Daniel P. Kennedy, an assistant professor in the IU Bloomington College of Arts and Sciences’ Department of Psychological and Brain Sciences. “This study is different. We wanted to understand differences among individuals and whether they are influenced by genetics.”

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