Critical periods and cognitive development in the first 2 years.
D002657:Child Development; D002658:Developmental Disabilities; D004777:Environment; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D008607:Intellectual Disability / Q000209:etiology; D007858:Learning; D010287:Parent-Child Relations; D012917:Social Adjustment; D012920:Social Behavior Disorders / Q000209:etiology; D012923:Social Class