The stage IV error in Piaget's theory of object concept development: difficulties in object conceptualization or spatial localization?
D000339:Affect; D002652:Child Behavior; D002657:Child Development; D003071:Cognition; D003210:Concept Formation; D005106:Exploratory Behavior; D005260:Female; D006801:Humans; D007223:Infant; D008297:Male; D008568:Memory; D009949:Orientation; D014796:Visual Perception