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Article CommentaryAnalysis And Commentary

Kahler v. Kansas and the Constitutionality of the Mens Rea Approach to Insanity

Jacqueline S. Landess and Brian J. Holoyda
Journal of the American Academy of Psychiatry and the Law Online March 2021, JAAPL.200086-20; DOI: https://doi.org/10.29158/JAAPL.200086-20
Jacqueline S. Landess
Clinical Assistant Professor of Psychiatry, Medical College of Wisconsin, Wauwatosa, WI and Forensic Psychiatrist, Mendota Mental Health Institute, Madison, WI. Dr. Holoyda is Forensic Psychiatrist, Martinez Detention Facility, Martinez, CA, and Psychiatrist, Full Spectrum Health Services, Las Vegas, NV.
MD, JD
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Brian J. Holoyda
Clinical Assistant Professor of Psychiatry, Medical College of Wisconsin, Wauwatosa, WI and Forensic Psychiatrist, Mendota Mental Health Institute, Madison, WI. Dr. Holoyda is Forensic Psychiatrist, Martinez Detention Facility, Martinez, CA, and Psychiatrist, Full Spectrum Health Services, Las Vegas, NV.
MD, MPH, MBA
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    Table 1

    Statutes in States That Have Adopted the Mens Rea Approach

     StateInsanity TestMitigating Factors at SentencingPost-Conviction Opportunities for Treatment
     MontanaEvidence of mental disease, disorder, or developmental disability is admissible “to prove that the defendant did or did not have a state of mind that is an element of the offense.”5“At the time of the commission of the offense the defendant was suffering from a mental disease or disorder or developmental disability that rendered him unable to appreciate the criminality of his behavior or to conform his behavior to the requirements of the law.”20If the defendant was found to meet the criteria of MCA 46-14-311, “the mandatory minimum sentence” need not apply and the court will commit him to the custody of the director of the department of public health and human services for treatment for a period of time not to exceed the maximum term of imprisonment. The director may transfer the defendant to another correctional, mental health, residential, or developmental disabilities facility that will better serve his needs.21
    Idaho“Mental condition shall not be a defense to any charge of criminal conduct,” but expert evidence is admissible “on the issue of any state of mind which is an element of the offense.”6If the defendant’s mental condition is a significant factor in sentencing, the court should consider:If the defendant is found by clear and convincing evidence to have a severe mental illness that resulted in his inability to appreciate the wrongfulness of his conduct or to conform his conduct to the requirements of law that, without treatment, would result in major distress, the court will authorize treatment during the period of confinement or probation. The statute does not specify where this treatment will occur.7
     Extent of defendant’s mental illness
     Degree of illness/defect and level of functional impairment
     Prognosis
     Availability of treatment and level of care required
     Risk of danger to public posed by defendant
     “Capacity of the defendant to appreciate the wrongfulness of his conduct or to conform his conduct to the requirements of law at the time of the offense charged”7
    Utah“It is a defense to a prosecution under any statute or ordinance that the defendant, as a result of mental illness, lacked the mental state required as an element of the offense charged.”8Not applicableAllows for verdicts of “guilty with a mental illness at the time of the offense” and “guilty of a lesser offense with a mental illness at the time of the offense,” which provide for the evaluation of a current mental illness and commitment to a mental health facility as part of the sentence.9
    KansasMay raise mental illness to show that the defendant “lacked the culpable mental state required as an element of the offense charged.”10The offender, because of physical or mental impairment, lacked substantial capacity for judgment when the offense was committed.11
    The crime was committed while the defendant was under the influence of extreme mental or emotional disturbances.
    The capacity of the defendant to appreciate the criminality of the defendant's conduct or to conform the defendant’s conduct to the requirements of law was substantially impaired.12
    After conviction, can be committed to the state hospital for up to 120 days while the pre-investigation report is conducted.13
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    Table 2.

    Model Penal Code Classifications and Examples

    Mens Rea TermMPC Definition14Alternative Adjectives15State of MindExamples:
    Intentionally or purposefullyA person acts purposefully [with respect to a result] if it is his conscious object . . . to cause such a resultDecides to, desires that, wants to, chooses toSubjectiveA shoots B because A wants to kill B to obtain an inheritance from B
    KnowinglyA person acts knowingly if he is aware that it is practically certain that his conduct will cause such a resultAware that [the harm will occur], almost positive that, virtually certain, understands thatSubjectiveA shoots B in the head because A wants to injure B but does not intend that B die
    RecklesslyA person acts recklessly when he consciously disregards a substantial and unjustifiable risk that [will be the result of his conduct]Realizes it is very likely [the harm might occur] but decides to act anyway; is conscious of the likelihood [of the harm] but simply doesn’t careSubjective (Consciously) and Objective (Gross deviation standard of negligence)A shoots B while playing Russian roulette with a one in six chance of killing B
    NegligentlyA person acts negligently when he should be aware of a substantial and unjustifiable risk that [will be the result of his conduct]Carelessly, overlooks, without even noticingObjective (Reasonable Person)A shoots into a forest that is normally uninhabited but happens to shoot B
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Journal of the American Academy of Psychiatry and the Law Online: 53 (1)
Journal of the American Academy of Psychiatry and the Law Online
Vol. 53, Issue 1
1 Mar 2025
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Kahler v. Kansas and the Constitutionality of the Mens Rea Approach to Insanity
Jacqueline S. Landess, Brian J. Holoyda
Journal of the American Academy of Psychiatry and the Law Online Mar 2021, JAAPL.200086-20; DOI: 10.29158/JAAPL.200086-20

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Kahler v. Kansas and the Constitutionality of the Mens Rea Approach to Insanity
Jacqueline S. Landess, Brian J. Holoyda
Journal of the American Academy of Psychiatry and the Law Online Mar 2021, JAAPL.200086-20; DOI: 10.29158/JAAPL.200086-20
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    • Abstract
    • States That Abolished the Insanity Defense
    • Insanity Defense and the U.S. Constitution
    • Facts and Procedural History of Kahler
    • Supreme Court Decision
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Keywords

  • insanity defense
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