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Related Experiment Videos

Multiple personality and forensic issues.

D O Lewis1, J S Bard

  • 1New York University School of Medicine, New York.

The Psychiatric Clinics of North America
|September 1, 1991
PubMed
Summary
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Multiple Personality Disorder (MPD) is often overlooked in violent offenders due to symptom overlap with antisocial personality traits. Increased clinician sophistication may lead to more diagnoses, but accurate forensic assessment remains challenging.

Area of Science:

  • Forensic Psychology
  • Psychiatry
  • Legal Medicine

Background:

  • Multiple Personality Disorder (MPD) shares origins with violence, often stemming from severe early abuse.
  • Clinicians face challenges in differentiating MPD symptoms from antisocial personality disorder in offenders.
  • The legal system's understanding of MPD is evolving, influenced by expert testimony.

Purpose of the Study:

  • To explore the challenges of diagnosing MPD in forensic settings.
  • To examine how courts approach MPD cases involving offenders.
  • To highlight the potential for misdiagnosis and malingering.

Main Methods:

  • Review of legal cases and clinical diagnostic considerations.
  • Analysis of symptom overlap between MPD and antisocial personality disorder.

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  • Discussion of diagnostic difficulties in forensic evaluations.

    • Main Results:

    • MPD is frequently underdiagnosed in offender populations due to symptom misinterpretation.
    • Symptoms like amnesia, fugue states, and emotional displays are often dismissed as deception or manipulation.
    • Confusion exists regarding the legal and clinical treatment of alternate personalities.

    Conclusions:

    • Accurate diagnosis of MPD in forensic settings requires heightened clinician awareness.
    • Distinguishing genuine MPD from malingering is a significant forensic challenge.
    • Further research and clear legal/clinical guidelines are needed for MPD cases.