We let students play a corruption game, embedded into a variant of the ultimatum game. Those allotted the role of public servants chose between whistleblowing, opportunism and reciprocity by delivery (of a contract) and those acting as businesspeople chose how to frame the game and whether to...

Governments, companies and organizations across the world have implemented strategies for countering corruption. A growing body of so-called best practice has emerged in the last 20 years. But some approaches have been criticized for being costly, ineffective or even counterproductive. This...