Docket No. Crim. 20081.

22 Cal.3d 333 (1978)

583 P.2d 1318

149 Cal. Rptr. 275

THE PEOPLE, Plaintiff and Respondent, v. RONALD JAY DREW, Defendant and Appellant.

Supreme Court of California.

September 26, 1978.

Attorney(s) appearing for the Case


Appellate Defenders, Inc., under appointment by the Supreme Court, and Harold F. Tyvoll for Defendant and Appellant.

Evelle J. Younger, Attorney General, Jack R. Winkler, Chief Assistant Attorney General, Daniel J. Kremer, Assistant Attorney General, Alan S. Meth, Harley D. Mayfield and Jay M. Bloom, Deputy Attorneys General, for Plaintiff and Respondent.



For over a century California has followed the M'Naghten1 test2 to define the defenses of insanity and idiocy. The deficiencies of that test have long been apparent, and judicial attempts to reinterpret or evade the limitations of M'Naghten have proven inadequate. We shall explain why we have concluded that we should discard the M'Naghten language, and...

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