““As a single case from half a century ago, Sybil Exposed cannot tell us anything about the reliability, validity, etiology, epidemiology, or typical treatment outcome of a mental disorder. Nathan’s alternative theory of pernicious anemia is implausible and supported by no corroborating evidence; Debbie Nathan advocates a hypothetical explanation of Shirley’s pre-1945 symptoms that is less evidence based than the trauma dissociation theory she rejects.””
