“...The conventional case in favor of policy experimentation focuses on how randomization controls selection bias. This is undoubtedly important. This essay...”

“...While transitional justice interventions are common in current post-conflict transitions, recent surveys in such settings suggest that public opinions often...”

“...•A cluster-randomized trial studies two democracy promotion strategies in Liberia.•A civic education intervention administered by Liberian civil society...”

“...How do international institutions affect political liberalization in member states? Motivated by an examination of the World Bank loans program, this article...”

“...With an unrepresentative sample, the estimate of a causal effect may fail to characterize how effects operate in the population of interest. What is less well...”

“...While ex-combatant reintegration is vital to successful transitions from war to peace, some former fighters turn to crime following demobilization. Such...”

“...We investigate the external validity of local average treatment effects (LATEs), specifically Angrist and Evans’s use of same sex of the two first children as...”

“...Considerable resources are devoted to ex-combatant reintegration programs in current peace processes, but evidence on their effectiveness remains thin. We use...”

“...How can intergroup contact programs affect conflict-ridden communities besides improving the outgroup attitudes of participating individuals? We address this...”