This paper is a practical guide (a toolkit) for researchers, students and practitioners wishing to introduce randomization as part of a research design in the field. It first covers the rationale for the use of randomization, as a solution to selection bias and a partial solution to publication...

This paper is a practical guide for researchers and practitioners who want to understand spillover effects in program evaluation. The paper defines spillover effects and discusses why it is important to measure them. It explains how to design a field experiment to measure the average effects of...

Randomized control trials (RCTs) have become increasingly important as an evidence-based method to evaluate interventions such as government programs and policy initiatives. Frequently, however, RCTs are characterized by "imperfect compliance," in that not all the subjects who are randomly...

Objective: Previous social-psychological research has demonstrated the positive effects of online bystander programs on various crime-related outcomes, while information systems research has demonstrated the ability of gamification to improve motivation, engagement, and learning. This study...

Interventions led by non-governmental organizations (NGOs) are often more effective than comparable efforts by other actors, yet relatively little is known about how implementer identity drives final outcomes. Combining a stratified field experiment in India with a triple-differences estimation...

Research in the 1970s based on observational data provided evidence consistent with predictions from economic theory that paying unemployment insurance (UI) benefits to involuntarily jobless workers prolongs unemployment. However, some scholars also reported estimates that the additional time...