Why the Diagnostic Criteria for Dissociative Identity Disorder Should Be Changed

Abstract

This paper examines the psy chi at ricdiagnosis of dissociative identity disorder (DID)inlightofthedevelopmentsinpsychi at ricclassification that have guided the last four re vi sions of the Diagnostic and Sta tis ti calMan ualforMen talDis or ders (DSM) (Amer i can Psychiatric Association, 1980, 1987, 1994, 2000). The author argues that multiple per son al ity 's pas sage from DSM-III, through DSM-III-R, to its current form as DID in DSM-IV-TR has left the di ag no sis out of step with the state of the art of psy chi atric classification. Ten dis advantages of the Diagnostic and Sta tis ti calMan ual of Men talDis or ders, Fourth Edi tion- Text Revision (DSM-IV-TR) cri te riafor DID are iden ti fied. The DSM-IV-TR cri te ria for DID: (1) are out of step with the state of the art of psy chi at ric clas si fi cation; (2) are not based on taxometric anal y sis of the symp toms of DID; (3) in correctly im ply that DID is a closed con cept; (4) have poor con tent valid ity; (5) throw away im portantinformation; (6) dis courage taxonomic research; (7) have poor reliability and cause frequent misdiagnoses; (8) are not “user-friendly”; (9) are un nee es sar ily con tro versial; and (10) along with pre vi ous ver sions of the DSM, have pro duced an artifactually low base-rate of DID for the past 20 years. In an effort to remedy these disadvantages, a re liable, user-friendly, polythetic set of diagnostic criteria for “Major Dissociative Disorder” is proposed for DSM-V. Using these polythetic cri te ria, the dissociative dis or ders (presently con cep tu al ized as Dissociative Am ne sia, Dissociative Fugue, DID, Depersonalization Disorder, and Dissociative Disorder Not Otherwise Spec ified) can be re struc tured into an eas ily un der stood and more re liable set of di ag nos tic en ti ties. This al ter nate nosology of the dissociative disorders consists of Sim pie Dissociative Dis or der (with at least three). sub types), Gen er al ized Dissociative Dis or der, Major Dissociative Disorder (with two subtypes), and Dissociative Disorder Not Otherwise Specified.

Key Words:

• Dis so ci ation
• dissociative iden tity dis order
• tax on omy
• psychiatricclassification
• nosology
• re liability
• validity
• diagnosis