The choice of symbols.
D001009:Anxiety, Castration / Q000150:complications; D001828:Body Image; D002657:Child Development; D005260:Female; D006801:Humans; D007223:Infant; D009769:Object Attachment; D010287:Parent-Child Relations; D011574:Psychoanalytic Theory; D011606:Psychosexual Development; D013561:Symbolism