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Confessions and expert testimony.

Kenneth J Weiss1

  • 1University of Medicine and Dentistry of New Jersey-Robert Wood Johnson Medical School at Camden, Camden, NJ, USA. kweiss@magpage.com

The Journal of the American Academy of Psychiatry and the Law
|February 21, 2004
PubMed
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Expert witnesses assess criminal confessions, focusing on the reliability of statements and waiver of rights. A new mnemonic, M.I.R.A.N.D.A., aids in identifying factors affecting confession validity.

Area of Science:

  • Forensic Psychology
  • Legal Psychology
  • Criminal Justice

Background:

  • Constitutional protections against self-incrimination and due process apply once a suspect is in police custody.
  • The Supreme Court established standards in Miranda v. Arizona (1966), upheld in Dickerson v. U.S. (2000).
  • Valid waiver of rights requires a knowing, intelligent, and voluntary decision.

Purpose of the Study:

  • To provide an expert witness perspective on the reliability of criminal confessions and waiver of rights.
  • To introduce a mnemonic device for recognizing conditions that may impact confession validity and warrant expert testimony.

Main Methods:

  • Clinical review of factors influencing confession reliability.
  • Development of a mnemonic (M.I.R.A.N.D.A.) for identifying potential issues in confessions.

Related Experiment Videos

  • Discussion of case examples from expert practice.

    • Main Results:

    • Confession voluntariness depends on objective and subjective variables, including police conduct, interrogation conditions, and suspect's state.
    • The M.I.R.A.N.D.A. mnemonic identifies key factors: Mental illness, Intoxication, Retardation, Acquiescence, Narcotic withdrawal, Deception, and Abuse.
    • These factors can alter the reliability of a suspect's statement and waiver of rights.

    Conclusions:

    • Expert testimony is crucial for evaluating the reliability of criminal confessions.
    • The M.I.R.A.N.D.A. mnemonic offers a structured approach for expert witnesses to assess confession validity.
    • Understanding these factors is essential for ensuring due process and accurate legal outcomes.