Columbia subject headings:
Cognition in children.
Emotions in children.
Intellect.
Object relations (Psychoanalysis)
Piaget, Jean, 1896-1980.
Harvard subject headings:
Cognition in children.
Emotions in children.
Intellect.
Object relations (Psychoanalysis)
Piaget, Jean, 1896-1980.
Princeton subject headings:
Child psychology.
Intellect.
Piaget, Jean, 1896-1980.