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California's diminished capacity defense: evolution and transformation
R Weinstock1, G B Leong, J A Silva
1University of California, Los Angeles, USA.
The Bulletin of the American Academy of Psychiatry and the Law
|January 1, 1996
Summary
California retains a limited mens rea defense, diminished actuality, a weakened form of diminished capacity. This defense allows for nuanced guilt findings but has lost the broader scope of its predecessor.
Area of Science:
- Criminal Law
- Forensic Psychiatry
Background:
- The evolution of mens rea defenses in criminal law.
- The historical context of diminished capacity in California.
Observation:
- California's diminished actuality defense is a narrow interpretation of mens rea.
- Mens rea defenses allow for gradations of guilt, unlike the insanity defense.
- The shift from diminished capacity to diminished actuality reflects legal and political changes.
Findings:
- Diminished actuality is a severely attenuated mens rea defense.
- The former expanded diminished capacity offered greater advantages.
- The current defense revives complex and antiquated legal concepts of intent.
Implications:
- Forensic psychiatrists must understand complex mens rea issues for evaluations.
- Restrictions on voluntary intoxication should not apply to mental illness defenses.
- Understanding the reasons behind criminal acts is crucial but often overlooked.