RT Journal Article SR Electronic T1 Diminished Capacity as an Alternative to McNaghten in California Law JF Journal of the American Academy of Psychiatry and the Law Online JO J Am Acad Psychiatry Law FD American Academy of Psychiatry and the Law SP 179 OP 183 VO 20 IS 2 A1 Walter Bromberg YR 1992 UL http://jaapl.org/content/20/2/179.abstract AB Dr. Diamond’s courageous defense of the diminished capacity plea in People v. Gorshen (1959) emphasized mental disturbances negating malice aforethought. Diminished capacity as a defense in California remained effective from 1978 to 1982 until overturned by a modified American Law Institute rule. Diamond’s advocacy of psychologic elements, including motivation, did much to enliven forensic thinking re: the death sentence and the fated diminished capacity defense.