FOLLOWING AN OVERVIEW OF THE USE OF PSYCHIATRIC EVALUATION IN CRIMINAL CASES, THE NEW YORK LAW IS DESCRIBED. IT MANDATES THAT ALL FELONY DEFENDANTS FOUND INCOMPETENT TO STAND TRIAL MUST BE EVALUATED BY A PSYCHIATRIST AND A DETERMINATION OF 'DANGEROUSNESS' MADE. THIS 3-YEAR STUDY FOLLOWS 257 MEN SO EVALUATED. THE INITIAL DATA WERE EXAMINED TO ISOLATE THOSE FACTORS WHICH LED THE PSYCHIATRISTS TO DETERMINE THAT THE DEFENDANT MIGHT OR MIGHT NOT BE DANGEROUS. AGE, RACE, EDUCATION, AND MARITAL STATE WERE NOT SIGNIFICANT. A HISTORY OF ALCOHOLISM SEEMED SLIGHTLY ASSOCIATED WITH A DETERMINATION OF 'DANGEROUS,' BUT THIS WAS NOT SIGNIFICANT. THE ONLY OVERRIDING FACTOR WAS THE CRIME COMMITTED. THERE WAS A SIGNIFICANT ASSOCIATION BETWEEN A VIOLENT CRIME DIRECTED AGAINST ANOTHER PERSON AND A 'DANGEROUS' LABEL. PAST CRIMINAL HISTORY WAS SLIGHTLY SIGNIFICANT AS WAS A HISTORY OF PREVIOUS PSYCHIATRIC HOSPITALIZATION. JUST AS THERE WAS LITTLE TO DISTINGUISH THE DANGEROUS FROM THE NONDANGEROUS BASED ON BACKGROUND CHARACTERISTICS, THERE WAS ALSO LITTLE TO DISTINGUISH THE TWO GROUPS WHEN ONE EXAMINES THEIR OUTCOMES. BOTH GROUPS WERE EQUALLY LIKELY TO BE ASSAULTIVE WHILE HOSPITALIZED, REARRESTED, OR REARRESTED FOR VIOLENT OFFENSES. ONE GROUP SCORED HIGHER ON ONE MEASURE, THE OTHER ON ANOTHER, FOR AN OVERALL PATTERN THAT ESSENTIALLY SHOWS LITTLE DIFFERENCE. TABLES PRESENT THESE COMPARISONS AND SUMMARIZE THE STUDY DATA. IT IS CONCLUDED THAT THE PSYCHIATRIC EVALUATIONS WERE NO MORE PREDICTIVE THAN A CHANCE DETERMINATION WOULD HAVE BEEN. THE INCREASING USE OF PSYCHIATRIC EVALUATION IN COURT PROCEEDINGS IS QUESTIONED. REFERENCES ARE APPENDED. (GLR)