VARIOUS ASPECTS OF CRIMINAL POLICIES ARE DISCUSSED FOLLOWING INTRODUCTORY REMARKS ON THE GENERAL ORIENTATION OF CRIMINAL POLICIES. CRIMINAL LAW POLICIES ARE EXAMINED, ESPECIALLY IN REGARD TO DECRIMINALIZATION, DEPENALIZATION OF TRAFFIC OFFENSES AND UNCOVERED CHECKS, AND THE INTRODUCTION OF NEW PUNISHABLE OFFENSES. A SECTION ON PENALTIES INCLUDES DISCUSSIONS OF SHORT-TERM IMPRISONMENT AND ALTERNATIVES SUCH AS PROBATION AND FINES, THE APPLICATION OF PENALTIES, AND THE QUESTION OF DETERRENCE. RULES OF CRIMINAL PROCEDURE GOVERNING POLICE POWERS, THE DETAINEE'S RIGHT TO COMMUNICATION, AND THE ARRESTEE'S RIGHT TO SILENCE ARE DESCRIBED. RELATIONS BETWEEN POLICE WORK AND CRIMINAL POLICY ARE REVIEWED, AND A DEFINITION OF POLICE AIMS IS OFFERED. A DISCUSSION OF THE ROLE OF THE POLICE IN CRIME PREVENTION EXAMINES THE DIFFICULTIES ENCOUNTERED IN WORKING OUT A SYSTEM ON A SCIENTIFIC BASIS AND IN MAKING A SCIENTIFIC EVALUATION OF ITS RESULTS. PREDELICTUAL AND POSTDELICTUAL PREVENTION ARE ALSO DISCUSSED. THE FINAL SECTION CONCERNS THE FATE OF THE VICTIM OF A SERIOUS CRIMINAL OFFENSE; THE CONCEPT OF VICTIM COMPENSATION IS VIEWED. AN APPENDIX PROVIDES ASSISTANCE AND GUIDANCE MEASURES APPLIED BY THE POLICE TO JUVENILE DELINQUENTS IN THE UNITED KINGDOM AND THE UNITED STATES.