The transition from sensorimotor to earliest symbolic function in early development.
D000367:Age Factors; D001296:Audiovisual Aids; D002652:Child Behavior; D002657:Child Development; D003071:Cognition; D005260:Female; D006801:Humans; D007223:Infant; D007360:Intelligence; D007361:Intelligence Tests; D007804:Language Development; D007858:Learning; D008297:Male; D009043:Motor Activity; D010988:Play and Playthings; D011582:Psychological Theory; D013997:Time Factors; D014705:Verbal Behavior