The authors review judgment research in the area of neuropsychological assessment. Topics include the reliability and validity of judgments, the appropriateness of confidence ratings, the value of training and experience, the cognitive processes of neuropsychologists, and the use of decision aids, including automated assessment programs and statistical prediction rules. Most of the research is on reliability and validity. The results indicate that neuropsychologists frequently make reliable and moderately valid judgments. However, for several tasks, experimenters have not studied the reliability and validity of judgments.