The COVID-19 (coronavirus) pandemic has taken a toll on human life and brought major disruption to economic activity across the world, precipitating an unprecedented global health and economic crisis. Although it is too early for a full assessment of the impact of the pandemic in Africa, it is...

Freight and logistics are essential for economic and social development and are projected to grow significantly, but prevailing practices are unsustainable. This discussion paper explores the initiatives being adopted, implemented, and proposed in each of the three subsectors in a logistical...

Fixed- and random-effects models are often used to control for unmeasured personspecific effects when examining the influence of measured covariates on an outcome. To date, different estimators are used for fixed- and random-effects models, making it difficult to choose between these two...

Mixing across racial and ethnic lines could spur understanding or inflame tensions between groups. We find that white students at a large state university randomly assigned African American roommates in their first year were more likely to endorse affirmative action and view a diverse student...

This paper examines a natural experiment in which students at a large state university were randomly assigned roommates through a lottery system. We find that on average, males assigned to roommates who reported drinking in the year prior to entering college had one quarter-point lower GPA than...