| Summary: | Cooperation with the public is essential for the success of police problem solving strategies. Public trust in the police is thus important. This systematic review has summarised research on police interventions aimed at improving relations between police and the public. We included 43 studies: 35 quantitative and eight qualitative studies. The main findings are:1. Procedural justice may have an effect on public trust in the police, but may have marginal or no effect on victims' trust in the police.2. It is uncertain whether community policing has an effect on public trust in the police. Studies show a positive effect, but the evidence is of low and very low quality.3. In qualitative studies about citizens' experiences with community policing, citizens' trust in the police was related to accessibility of the police, and whether officers were perceived as building relationships with the community.4. It is uncertain whether the identified interventions about informing the public about the police have an effect on trust in the police. Studies show marginal or no effect, but the evidence is of low and very low quality.5. It is uncertain whether the identified interventions aimed at youths have an effect on youths' trust in the police.6. In qualitative studies about youths' experiences with police interventions, building relations with the youths were important to building youths' trust in the police
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