Competency to Stand Trial
A legal-psychiatric determination that a defendant has a sufficient present ability to consult with counsel and understand the nature and consequences of legal proceedings against them.
Full Definition
Competency to stand trial (CST) is a forensic mental health concept rooted in the U.S. Supreme Court standard set in Dusky v. United States (1960), requiring that a defendant possess a rational and factual understanding of proceedings and the ability to assist counsel. Clinicians produce formal Competency Evaluation Reports that editors may be tasked with proofreading. The term is always 'competency to stand trial,' not 'competence to stand trial,' in U.S. forensic contexts (though 'competence' is used in international settings). Editors must not conflate this with 'criminal responsibility' (insanity defense), which addresses mental state at the time of the offence, not at the time of trial.
Usage
Usage note: In U.S. contexts, 'competency' (not 'competence') is the preferred legal term. Do not conflate with criminal responsibility or insanity defense.
In Context
- "The forensic evaluator's report concluded that the defendant lacked competency to stand trial due to a severe delusional disorder." — Forensic Competency Evaluation Report
- "In U.S. legal contexts, prefer 'competency to stand trial' over 'competence to stand trial'; note the distinction when editing cross-jurisdictional documents." — Editorial Guidance Note