The application of computers to the functions traditionally carried out by a psychometrician or psychologist is examined. Diagnosis, psychotherapy, interviewing, psychological testing, test interpretation, and report writing are reviewed. The advantages and disadvantages of using computers in assessment applications are discussed. Patient and professional acceptance of automated psychological services is reviewed, as well as the parameters to consider in the development of computerized interviewing and testing. Brief comments are made regarding suitable computer systems for these applications. It is argued that computers can provide a cost-effective enhancement to the delivery of mental health services.