Friends’ Genes May Help Others Stay in SchoolWhile there’s scientific evidence to su

Friends’ Genes May Help Others Stay in SchoolWhile there’s scientific evidence to suggest that your genes have something to do with how far you’ll go in school, new research by a team from Stanford and elsewhere says the DNA of your classmates also plays a role.“We examined whether the genes of your peer groups influenced your height, weight or educational attainment. We didn’t find a correlation to height or weight, but did find a small one with how far you go in school,” says Ben Domingue, assistant professor at Stanford Graduate School of Education and first author of the new paper, published online Jan. 9 in Proceedings of the National Academy of Sciences.The link can be explained by what researchers call social genetic effects, when the health or behavior of one individual is affected by the genes of another. The effect shows up, recent research on mice has found, with roommates, as well.The genetic influence of schoolmates may manifest itself through traits or characteristics that then influence your behavior, says researchers. Say, for example, that your friend stays up late because of a genetic disposition to burn the midnight oil. That behavior may cause you to stay up late too, impacting your educational attainment, which researchers define as the amount of formal schooling completed.The association is not deterministic, explains Domingue – meaning you can’t blame your friends’ genes (or your own, for that matter) for that D in chemistry. The effect is also small – roughly one-third of an extra year of schooling.But the findings do point to important ways in which genetic and social effects are interrelated in their influence on behavior.“Unlike height, educational attainment is socially contextualized. There is more going on than genetics,” says Kathleen Mullan Harris, senior author and distinguished professor of sociology at the University of North Carolina at Chapel Hill. “Our results imply that scientific investigations into either genetic and social effects need to account for the other.” Full open access research for “The social genome of friends and schoolmates in the National Longitudinal Study of Adolescent to Adult Health” by Benjamin W. Domingue, Daniel W. Belsky, Jason M. Fletcher, Dalton Conley, Jason D. Boardman, and Kathleen Mullan Harris in PNAS. Published online January 9 2018 doi:10.1073/pnas.1711803115 -- source link

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