Acquisition of receptive vocabulary in the toddler-age child.
D000375:Aging; D001288:Attention; D002657:Child Development; D002675:Child, Preschool; D004192:Discrimination, Psychological; D005556:Form Perception; D006801:Humans; D007223:Infant; D007804:Language Development; D014706:Verbal Learning; D014825:Vocabulary