Perception and language: a German replication of the Piaget-Inhelder position.
D001077:Aptitude Tests; D002648:Child; D002657:Child Development; D003431:Cross-Cultural Comparison; D003467:Cultural Deprivation; D005260:Female; D005860:Germany, West; D006801:Humans; D007804:Language Development; D008297:Male; D010465:Perception; D014481:United States; D014796:Visual Perception