title: Playing peekaboo with a four-month-old: a study of the role of speech and nonspeech sounds in the formation of a visual schema.
mesh_terms: D001288:Attention; D001307:Auditory Perception; D002657:Child Development; D003071:Cognition; D003463:Cues; D005149:Facial Expression; D006801:Humans; D007223:Infant; D008297:Male; D010988:Play and Playthings; D013016:Sound; D013060:Speech; D014785:Vision, Ocular; D014796:Visual Perception