Introduction : Evaluation of crime prevention -- Anticpated consequences : developing a strategy for the targeted measurement of displacement and diffusion of benefits -- Cost benefit analysis for crime prevention : opportunity costs, routine savings and crime externalities -- Learning from experience in problem-oriented policing and situational prevention : the positive functions of weak evaluations and the negative functions of strong ones -- Choosing an evaluation model for community crime prevention programs -- Evaluating multi-agency anti-crime partnerships : theory, design, and measurement issues.