evidence on punishment preferences, in which subjects reveal a heterogeneous preference for punishing wrongdoers, our model … identifies circumstances in which “punitive” individuals (with stronger-than-average punishment preferences) will self …-select into law enforcement jobs that offer the opportunity to punish (or facilitate the punishment of) wrongdoers. Such “punitive …

, primarily through an increase in guilty pleas. Pre-trial detention has no detectable effect on future crime, but decreases pre …-trial crime and failures to appear in court. We also find suggestive evidence that pre-trial detention decreases formal sector …