We study the influence of an explicit appeal to reciprocity as a design element in communication campaigns. We conduct an experiment based on a real campaign run by Deutsche Post, the German postal service, in which German citizens could participate in a sweepstakes and vote for their mail...

Corruption in sports represents an important challenge to their integrity. Corruption can take many forms, including match fixing by players, referees, or team officials. Match fixing can be difficult to detect. We use a unique data set to analyze variation in bet volume on Betfair, a major...

In this note, we provide a cleanly identified and empirically relevant example of a setting where an increase in market concentration caused lower prices and markups. This result contradicts some widely used models of competition and highlights the value of richer models of firm behavior and...

In this note, we provide a cleanly identified and empirically relevant example of a setting where an increase in market concentration caused lower prices and markups. This result contradicts some widely used models of competition and highlights the value of richer models of firm behavior and...