The popularization of DID, helped in part by Sybil (a popular 1970s book and later film about a woman with 16 different personalities), may have prompted clinicians to overdiagnose the disorder (Piper & Merskey, 2004).

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More cases of Dissociative Identity Disorder (DID) were identified in the five years prior to 1986 than in the preceding two centuries (Putnam, Guroff, Silberman, Barban, & Post, 1986). This sharp increase may be due to the development of more sophisticated diagnostic techniques, or it may reflect overdiagnosis of the disorder.

Sharp Rise in DID Diagnoses in the 1980s

Spielman, R. M., Jenkins, W. J., & Lovett, M. D. (2020, April 22). Psychology (2nd ed.). OpenStax. https://openstax.org/books/psychology-2e/pages/1-introduction

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