Mothers' responses to infants' object-related gestures: influences on lexical development.
D005260:Female; D005868:Gestures; D006801:Humans; D007223:Infant; D007697:Kinesics; D007804:Language Development; D008297:Male; D008425:Maternal Behavior; D009034:Mother-Child Relations; D013060:Speech; D014825:Vocabulary