作者: Lee Willerman
DOI: 10.2307/1128049
关键词: Activity level 、 Dizygotic twins 、 Zygosity 、 Demography 、 Psychology 、 Developmental psychology 、 Correlation 、 Physical activity level 、 Motor processes
摘要: WILLERMAN, LEE. Activity Level and Hyperactivity in Twins. CHILD DEVELOPMENT, 1973, 44, 288-293. The mothers of 93 sets same-sexed twins completed questionnaires on activity level zygosity their twins. Intraclass correlations for monozygotic (MZs) were substantially higher than dizygotic (DZs). Among twin where at least 1 member scored the hyperactive range questionnaire (upper 20%), MZ showed a high correlation while DZ no correlation. results interpreted as suggesting substantial heritable component to level.