Are bribe payments in Tanzania “grease” or “grit”?

This article uses empirical evidence from Tanzania to show that bribes there are not “greasing” but instead encumber economic transactions. The evidence suggests that bribe payments promote contacts with service providers, result in lower satisfaction with public service delivery, and result in less efficient public services. Further evidence against bribes as ‘facilitators’ is presented in the form of opinion polls and actions taken to reduce bribe payments. This revised version was published online in July 2006 with corrections to the Cover Date.