We implement a randomized field experiment to study the impact of reminders on dental health prevention. Patients who are due for a check-up receive no reminder, a neutral reminder postcard, or reminders including additional information on the benefits of prevention. Our results document a...

We analyze survey evidence on individuals’ willingness to sanction law violations - such as evading taxes, drunk driving and fare dodging - by disapproval or social exclusion. Our data show that people condition their willingness to sanction a norm violation on their belief about its...

We run a large-scale natural field experiment to evaluate alternative strategies to en- force compliance with the law. The experiment varies the text of mailings sent to potential evaders of TV license fees. We find a strong alert effect of mailings, leading to a substantial increase in...