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Associations between children's intelligence and academic achievement: the role of sleep
Author(s) -
Erath Stephen A.,
Tu Kelly M.,
Buckhalt Joseph A.,
ElSheikh Mona
Publication year - 2015
Publication title -
journal of sleep research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.297
H-Index - 117
eISSN - 1365-2869
pISSN - 0962-1105
DOI - 10.1111/jsr.12281
Subject(s) - actigraphy , academic achievement , psychology , developmental psychology , standardized test , body mass index , pittsburgh sleep quality index , intelligence quotient , clinical psychology , gerontology , medicine , psychiatry , insomnia , sleep quality , cognition , mathematics education , pathology
Summary Sleep problems (long wake episodes, low sleep efficiency) were examined as moderators of the relation between children's intelligence and academic achievement. The sample was comprised of 280 children (55% boys; 63% European Americans, 37% African Americans; mean age = 10.40 years, SD = 0.65). Sleep was assessed during seven consecutive nights of actigraphy. Children's performance on standardized tests of intelligence (Brief Intellectual Ability index of the Woodcock–Johnson III) and academic achievement (Alabama Reading and Math Test) were obtained. Age, sex, ethnicity, income‐to‐needs ratio, single parent status, standardized body mass index, chronic illness and pubertal development were controlled in analyses. Higher intelligence was strongly associated with higher academic achievement across a wide range of sleep quality. However, the association between intelligence and academic achievement was slightly attenuated among children with more long wake episodes or lower sleep efficiency compared with children with higher‐quality sleep.