Using Electoral Cycles in Police Hiring to Estimate the Effect of Policeon Crime
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Previous empirical studies have typically uncovered little evidence that police reduce crime. One problem with those studies is a failure to adequately deal with the simultaneity between police and crime: while police may or may not reduce crime, there is little doubt that expenditures on police
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美国国家经济研究局创建时间：
1995-01-01
