Intelligence is a poor predictor of nonrestorability of competence to stand trial.

Criminal defendants found incompetent to stand trial (IST) may only be committed for competency restoration if their restoration success is considered likely and when this aim can be met within a "reasonable" period of time. In this study, we evaluated the predictive validity and test accuracy of standardized intelligence testing on the classification of nonrestorability in a sample of 293 male patients adjudicated IST and committed for inpatient restoration. At 90 days, 17.