Journal of Child Psychology and Psychiatry · 2013 · 177 citations · 32 references
Although genetic and neurological determinants may be the primary predictors of difficulties with activity level and attention, aetiology appears to be influenced by socioeconomic situation.
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Trends in the Prevalence of Developmental Disabilities in US Children, 1997–2008
Coleen A. Boyle, Sheree L. Boulet, Laura A. Schieve et al. · PEDIATRICS · 2011 · 1.7K citations