JUVENILE COMPETENCY TO STAND TRIAL: A DECISION TREE FOR DETERMINING THE ROLE OF PSYCHOLOGICAL TESTING

Abstract

Juvenile competency to stand trial (JCST) represents a critical legal determination at the intersection of developmental psychology, mental health, and juvenile justice. Courts must assess whether a youth possesses sufficient present ability to understand legal proceedings and to assist counsel in a rational manner. Unlike adult competency determinations, juvenile evaluations must account for developmental immaturity, cognitive limitations, and psychosocial factors that may impair legal capacities even in the absence of mental illness. Psychological testing is frequently employed in competency evaluations; however, there remains considerable variability regarding when, how, and to what extent such testing should be used. This research article proposes a structured decision-tree model to guide clinicians and courts in determining the appropriate role of psychological testing in juvenile competency assessments. Drawing on legal standards, empirical research, and forensic practice, the paper outlines common assessment challenges, evaluates the strengths and limitations of testing instruments, and offers evidence-based recommendations for integrating developmental considerations into competency determinations.