THE STUDY WAS UNDERTAKEN AS PART OF A LARGER REVIEW OF COMPUTERIZED DECISION MODELS AND THEIR USE. THE PURPOSE WAS TO ASSIST THE LAW ENFORCEMENT ASSISTANCE ADMINISTRATION TO ESTABLISH PRIORITIES FOR FUTURE FUNDING POLICY. A SURVEY OF 39 CASES OF MODEL APPLICATIONS IS DESCRIBED. DATA ARE PRESENTED CONCERNING THE MEANS BY WHICH THE OPPORTUNITY FOR MODEL USE IN THE USER-AGENCIES WAS PERCEIVED, AND BY WHICH A PARTICULAR MODEL WAS SELECTED, ACQUIRED, AND INTRODUCED. CRITERIA FOR DETERMINING THE SUCCESS OR FAILURE OF IMPLEMENTATION ARE GIVEN,AND FACTORS IN THESE OUTCOMES ARE DISCUSSED. FINALLY, RECOMMENDATIONS FOR FUTURE FEDERAL POLICY CONCERNING MODEL BUILDING, DISSEMINATION, AND IMPLEMENTATION ARE OFFERED. (AUTHOR ABSTRACT)...KAP