Cognitive growth in preschoolers through verbal interaction with mothers.
D001741:Black or African American; D002675:Child, Preschool; D003071:Cognition; D005260:Female; D006801:Humans; D007223:Infant; D008607:Intellectual Disability / Q000534:rehabilitation*; D007361:Intelligence Tests; D008297:Male; D008722:Methods; D009034:Mother-Child Relations; D009518:New York; D013637:Tape Recording; D014706:Verbal Learning