We study the evolution of belief systems that suppress productive effort. These include concerns about the envy of others, beliefs in the importance of luck for success, disdain for competitive effort, and traditional beliefs in witchcraft. We show that such demotivating beliefs can evolve when...

Within the field of economics, despite being widespread, African traditional religions tend to be perceived as unimportant and ignored when studying economic decision-making. This study tests whether this presumption is correct. Using daily data on business decisions and performance of beer...

This paper investigates how tax rates and tax enforcement jointly impact fiscal capacity in low-income countries. We study a policy experiment in the D.R. Congo that randomly assigned 38,028 property owners to the status quo tax rate or to a rate reduction. This variation in tax liabilities...

We use a variant of the Implicit Association Test (IAT) to examine individuals' implicit attitudes towards various ethnic groups. Using a population from the Democratic Republic of Congo, we find that the IAT measures show evidence of an implicit bias in favor of one's own ethnicity. Individuals...

This article provides evidence from the Congo that social relationships with state officials can decrease one social cost of corruption, in the context of public transport. We first document that police stops can lead to long bribe negotiations. In response, some drivers and officers have built...

The assignment of workers to tasks and teams is a key margin of firm productivity and a potential source of state effectiveness. This paper investigates whether a low-capacity state can increase its tax revenue by optimally assigning its tax collectors. We study the two-stage random assignment...

We analyze the organization of corruption in a state agency. The dual mandate of the Democratic Republic of the Congo's traffic police agency is to manage traffic and to enforce the traffic code. We first document that, in the capital's branch, Kinshasa, traffic violation fines account for only...