Separation-individuation and object constancy.
D000367:Age Factors; D001010:Anxiety, Separation / Q000209:etiology; D002409:Cathexis; D002657:Child Development; D002675:Child, Preschool; D003071:Cognition; D004532:Ego; D005260:Female; D006801:Humans; D007062:Identification, Psychological; D007207:Individuation; D007223:Infant; D008568:Memory; D009034:Mother-Child Relations; D009769:Object Attachment; D010553:Personality Development; D011606:Psychosexual Development; D012043:Regression, Psychology; D012649:Self Concept; D012919:Social Behavior