Cite as: 505 U. S. 437 (1992)
Opinion of the Court
may take such factors into account in making judgments as to the allocation of the burden of proof, and we see no basis for concluding that placing the burden on the defendant violates the principle approved in Pate.
Petitioner argues that psychiatry is an inexact science, and that placing the burden of proof on the defendant violates due process because it requires the defendant to "bear the risk of being forced to stand trial as a result of an erroneous finding of competency." Brief for Petitioner 8. Our cases recognize that "[t]he subtleties and nuances of psychiatric diagnosis render certainties virtually beyond reach in most situations," because "[p]sychiatric diagnosis . . . is to a large extent based on medical 'impressions' drawn from subjective analysis and filtered through the experience of the diagnostician." Addington v. Texas, 441 U. S., at 430. The Due Process Clause does not, however, require a State to adopt one procedure over another on the basis that it may produce results more favorable to the accused. See, e. g., Patterson v. New York, 432 U. S., at 208 ("Due process does not require that every conceivable step be taken, at whatever cost, to eliminate the possibility of convicting an innocent person"); Snyder v. Massachusetts, 291 U. S. 97, 105 (1934) (a state procedure "does not run foul of the Fourteenth Amendment because another method may seem to our thinking to be fairer or wiser or to give a surer promise of protection to the prisoner at the bar"). Consistent with our precedents, it is enough that the State affords the criminal defendant on whose behalf a plea of incompetence is asserted a reasonable opportunity to demonstrate that he is not competent to stand trial.
Petitioner further contends that the burden of proof should be placed on the State because we have allocated the burden to the State on a variety of other issues that implicate a criminal defendant's constitutional rights. E. g., Colorado v. Connelly, 479 U. S. 157, 168-169 (1986) (waiver of Miranda rights); Nix v. Williams, 467 U. S. 431, 444-445, n. 5 (1984)
451
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