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Direct linkSaudino, Kimberly J. – Developmental Science, 2009
Activity level (AL) is a highly salient feature of child behaviour that has been linked to developmental outcome. Twin studies of parent-rated, observer-rated and mechanically assessed AL in childhood find that AL is genetically influenced. Few studies, however, consider whether different methods of assessing AL have a shared genetic etiology.…
Descriptors: Twins, Genetics, Measurement Techniques, Parents
