THE QUANTITATIVE STUDY OF CRIMINAL JUSTICE IS A RAPIDLY EXPANDING FIELD, INVOLVING THE APPLICATION OF RELATIVELY SOPHISTICATED STATISTICAL METHODS AND PROBABILISTIC MODELS. AN INTRODUCTORY ESSAY DESCRIBES THE HIGHLIGHTS OF A FOLLOWUP CONFERENCE HELD IN OCTOBER 1977, AT WHICH WORKSHOP PARTICIPANTS DESCRIBED SOME OF THEIR SUBSEQUENT RESEARCH. THIS ESSAY PROVIDES AN OVERVIEW TO THE VOLUME AND TO THE FRONTIERS OF QUANTITATIVE RESEARCH IN THIS AREA. THE REMAINING PAPERS CONSIST OF DETAILED VERSIONS OF CONFERENCE PRESENTATIONS, AS WELL AS REPORTS ON OTHER RELATED RESEARCH IN SUCH DIVERSE AREAS AS MACROMODELS FOR CRIMINAL JUSTICE PLANNING, THE DETERRENT EFFECTS OF PUNISHMENT ON CRIME, EFFECTS OF PLEA BARGAINING ON CASE DISPOSITION, CRIMINAL VICTIMIZATION AND MODELS FOR ITS ANALYSIS, VICTIM PRONENESS, PAROLE DECISIONMAKING, AND POLICE PATROL EXPERIMENTS. MODIFIED--MRS)