Longitudinal course of measured intelligence in preschool children of different social and ethnic backgrounds.
D002648:Child; D002675:Child, Preschool; D003431:Cross-Cultural Comparison; D003467:Cultural Deprivation; D005006:Ethnicity; D005260:Female; D006801:Humans; D008607:Intellectual Disability / Q000453:epidemiology; D007360:Intelligence; D007361:Intelligence Tests; D008297:Male; D009519:New York City; D011647:Puerto Rico; D012923:Social Class; D012959:Socioeconomic Factors; D014481:United States