RT Journal Article SR Electronic T1 Clark v. Arizona: Diminishing the Right of Mentally Ill Individuals to a Full and Fair Defense 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 545 OP 548 VO 34 IS 4 A1 Hal Wortzel A1 Jeffrey Metzner YR 2006 UL http://jaapl.org/content/34/4/545.abstract AB In Clark v. Arizona, the U.S. Supreme Court was faced with two main questions: Does Arizona’s insanity defense statute, with its abridged M’Naughten standard, violate the Fourteenth Amendment? And does Arizona case law, with its complete prohibition on the use of mental disease or defect evidence to combat required mens rea elements of a crime, violate due process? In a six–three decision, the Court answered both of these questions in the negative.