Prosecutor Quality, Witness Participation, Crime, and Reform
构建模型分析检察官素质如何影响证人合作意愿，进而影响犯罪率和错判率，并比较多数选民与社会规划者的改革选择。
We develop a model wherein concerns about prosecutor quality reduce the willingness of witnesses to cooperate with prosecutors. This causes an increase in the crime rate and in wrongly convicted innocent defendants. Because citizens are taxpayers and may be victims, perpetrators, witnesses, or falsely accused defendants, they care about the prosecutor’s quality. They update beliefs about this quality based on the disposition of cases. If the prosecutor’s believed quality falls below a threshold, then a majority of voters chooses to replace the prosecutor with a challenger, in expectation of reform. We compare the majority’s choice with that of a social planner.