DOI: 10.1111/J.1467-8624.2011.01680.X
关键词:
摘要: Actigraphs and parent observer ratings were used to explore genetic influences on continuity change in activity level (AL) early childhood. Over 300 pairs of twins wore actigraphs for a 48-hr period the home laboratory at ages 2 3. AL was genetically influenced both with little evidence differential heritability across age. For all measures, contributed phenotypic continuity. With exception actigraph measure home, new effects emerged age 3 indicating that factors influence Nonshared environmental also source transition from infancy