The growth of logical thinking. Piaget's contribution to ego psychology.
D000293:Adolescent; D002648:Child; D002657:Child Development; D002675:Child, Preschool; D003210:Concept Formation; D004532:Ego; D005260:Female; D005602:France; D049673:History, 20th Century; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D008128:Logic; D008297:Male; D009048:Motor Skills; D010465:Perception; D011572:Psychoanalysis; D011584:Psychology / Q000266:history; D013850:Thinking