"When friends fall out": developmental interference with the function of some imaginary companions.
D000293:Adolescent; D002648:Child; D002657:Child Development; D002675:Child, Preschool; D003220:Conflict, Psychological; D005201:Fantasy; D005260:Female; D006801:Humans; D007223:Infant; D007398:Interpersonal Relations; D008297:Male; D009289:Narcissism; D009769:Object Attachment; D011574:Psychoanalytic Theory; D011606:Psychosexual Development; D011613:Psychotherapy; D012559:Schizophrenia / Q000628:therapy; D012649:Self Concept