Genetic influences on activity level in early childhood: do situations matter?

Child Development
Kimberly J Saudino, Jeffrey A Zapfe

Abstract

Although genetic influences on individual differences in activity level (AL) are well documented, few studies have considered the etiology of AL from a contextual perspective. In the present study, cross-situational and context-specific genetic effects on individual differences in AL at age 2 were examined. The AL of 312 twin pairs (144 monozygotic and 168 dzygotic) was mechanically assessed with actigraphs in the home and in laboratory test and play situations. AL displayed significant genetic variance in all 3 situations. Moreover, actigraph scores significantly correlated across situations. Multivariate genetic model-fitting analyses found that the observed cross-situational continuity in AL was due entirely to genetic factors. Situational differences in AL arise from genetic, shared environmental, and nonshared environmental influences.

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Citations

Mar 10, 2010·European Child & Adolescent Psychiatry·Christine M FreitagMarcel Romanos
Oct 11, 2012·Twin Research and Human Genetics : the Official Journal of the International Society for Twin Studies·Kimberly J Saudino, Philip Asherson
Dec 31, 2009·Genes, Brain, and Behavior·N IlottP Asherson
Feb 28, 2013·International Journal of Environmental Research and Public Health·Katherine Kaufer ChristoffelHelen J Binns
Nov 23, 2011·Child Development·Kimberly J Saudino
Aug 25, 2010·Journal of the American Academy of Child and Adolescent Psychiatry·Alexis C Wood, Michael C Neale
Sep 30, 2015·Child Development Perspectives·Kimberly J Saudino, Lauren Micalizzi
Dec 6, 2016·Journal of Child Psychology and Psychiatry, and Allied Disciplines·Megan FlomKimberly J Saudino
Nov 10, 2017·Developmental Science·Kimberly J SaudinoPhilip Asherson
Oct 20, 2017·Research Quarterly for Exercise and Sport·Lee SmithAbigail Fisher
Feb 16, 2019·Obesity Reviews : an Official Journal of the International Association for the Study of Obesity·Catherine G Russell, Alan Russell
Jan 31, 2014·The American Journal of Clinical Nutrition·John Worobey
Sep 14, 2019·Twin Research and Human Genetics : the Official Journal of the International Society for Twin Studies·Kimberly J Saudino, Jody M Ganiban

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