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Optical differences in multiple personality disorder. A second look.

S D Miller1, T Blackburn, G Scholes

  • 1Brief Family Therapy Center, Milwaukee, WI 53216.

The Journal of Nervous and Mental Disease
|March 1, 1991
PubMed
Summary
This summary is machine-generated.

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Individuals with dissociative identity disorder (DID), formerly multiple personality disorder (MPD), show significant differences in visual functioning between alters. This replication study confirms earlier findings but notes inconsistencies across visual measures.

Area of Science:

  • Psychology
  • Neuroscience
  • Ophthalmology

Background:

  • Previous research indicated altered visual functioning in individuals with dissociative identity disorder (DID).
  • A 1989 study found significant optical differences between alter personalities in DID patients compared to simulators.

Purpose of the Study:

  • To replicate a prior study on optical differences in dissociative identity disorder (DID).
  • To investigate visual functioning changes between alter personalities in diagnosed DID patients and a control group simulating DID.

Main Methods:

  • Replication study involving 20 diagnosed DID patients and 20 control subjects role-playing DID.
  • Statistical and clinical significance analysis of visual functioning data across different alter personalities.

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Main Results:

  • Findings confirm that individuals with DID experience differences in visual functioning between alter personalities.
  • DID subjects exhibited more visual function differences than control subjects simulating the disorder.
  • However, results showed inconsistencies across various visual measures and with previous studies.

Conclusions:

  • The study supports the hypothesis of altered visual functioning in dissociative identity disorder (DID).
  • Replication confirms significant visual differences between alters in DID patients.
  • Inconsistencies warrant further investigation into the nature and extent of visual changes in DID.