AEA RCT Registry currently lists 8828 studies with locations in 168 countries.

Most Recently Registered Trials

  • From the Pulpit to the People: How Sermons Shape Beliefs and Behavior
    Last registered on June 20, 2024

    Religion serves as an important source of beliefs for many across the world yet we know little about how religion and religious leaders contribute to belief formation. In this study, I exploit a unique partnership with the Punjab Auqaf Department in Pakistan, responsible for running state religious properties, to experimentally vary sermon content in 300 mosques and evaluate the causal impact of religious sermons on mosque-goers' social beliefs and behavior. By randomizing imams to sermon scripts emphasizing the importance of community rights and women's rights, I explore the importance of religious messaging for prosociality towards neighbors, community engagement, and attitudes towards women's social and economic participation.

  • The effect of online work-hour flexibility on composition and productivity of workers
    Last registered on June 20, 2024

    We propose to conduct an experiment on a major international online freelancing labor market platform to study the impact of greater flexibility in choosing work hours on productivity and worker benefit. This document describes the analysis plan for the natural field experiment. This plan outlines the design of the study, the outcomes of interest, and the econometric approach.

  • Overcoming budget, availability, and attention constraints to healthy diets in Tanzania
    Last registered on June 19, 2024

    This study is motivated by the problem of rapid rise in overweight, obesity, and non-communicable diseases in different parts of the World. The study assumes that if healthy food will also be conveniently available at affordable prices, chances are that food consumers will resort to eating healthier diets and minimize the consumption of unhealthy foods. The thrust of the research therefore is to test and evaluate the impact of price discounts on food consumption. The first research problem is to understand the food environment in Dar es Salaam. This first component of the study involves two major parts namely desk study and fieldwork. The desk study involves making an in-depth understanding of situation analysis of food and nutrition in Tanzania and key dynamics around the world. The ...

  • Online Tutoring Program for Students in Socioeconomically Vulnerable Contexts
    Last registered on June 19, 2024

    The Government of the autonomous community of Navarra, Spain, is implementing a new intensive online tutoring program for students from low socioeconomic backgrounds in the region. The program aims to improve academic outcomes in mathematics among primary and secondary education students. The online tutoring is provided by professional teachers from the Navarra educational system.

  • Perceived Returns to Rest
    Last registered on June 19, 2024

    Notions of rest and self-care – be it meditation, napping, or a walk in nature – have become increasingly popular, and recent economic research suggests these activities can improve not only mental well-being but also performance overall. Nevertheless, uptake and engagement of these kinds of activities remain low – especially in stressful labor market situations. In the context of online labor markets, we explore workers’ beliefs on and decisions to invest in rest. We document the productivity effects of mandated rest periods during a strenuous work task. Furthermore, we look at who chooses to invest in rest when given the option and ask whether “break-skippers” and “break-takers” are maximizing their earnings.

  • Pre-analysis plan for additional long run results for “Does Integration Change Gender Attitudes?”
    Last registered on June 19, 2024

    We have previously found that exposure of men to women in the Norwegian army changes attitudes about mixed-gender productivity, gender roles, and gender identity in the short run. We will now investigate longer term effects on the same outcomes as well as effects on other outcomes using register data. We have not yet received the register data and in this plan we describe the hypotheses to be tested and how they will be tested once we get the data. The description includes how the variables are coded, how we will deal with missing values, and the specification of the estimation equations.

  • Women-only Option in a Peer-to-Peer Marketplace: the Case of Long-distance Carpooling
    Last registered on June 19, 2024

    Women-only options in digital marketplaces have emerged as a response to an amplified need for safety in the interaction between men and women. These designs remove the uncertainty about the identity of the user's counterparts, and by doing so, they limit the possibility of undesired events. As such, women-only options aim to improve female users' experience and encourage their participation. In one of the largest digital platforms for long-distance carpooling, this project will study the effects of rolling out a women-only option on the participation and usage decisions of female drivers and passengers. The study is planned to consist of three independent interventions that randomize (i) the possibility of choosing the women-only feature for female drivers, (ii) the awareness of the av...

  • The Impacts of Political Donations on Public Procurement in Colombia
    Last registered on June 18, 2024

    We explore the relationship between political donations and the allocation of public procurement contracts across multiple local elections in Colombia. By linking the universe of public contractors and the mandatory report of political donations by individuals and firms, our results demonstrate a long-term distortion in the contract allocation process attributable to political donations. We then introduce a novel experimental approach, to study how new mayors strategically react to different warnings about increased scrutiny of contracts given to their donors.

  • Estimating Demand When Turning a Public Bad into an Impure Public Good
    Last registered on June 18, 2024

    Aquatic vegetation is a public bad that grows in common property freshwater resources and provides the habitat for snails that host schistosomes that infect, and reinfect, rural villagers in our northern Senegal study sites. We will estimate demand for compost and animal feed made from aquatic vegetation in northern Senegal, with and without information about the production method's public good benefit in controlling the infectious disease schistosomiasis. Our objective is to quantify individuals' willingness to pay (WTP) for as-yet-nonmarketed impure public goods that bundle a public good - reduced infectious disease exposure - with a private good - in this case, the agricultural inputs compost and livestock feed - and to unpack these distinct sources of valuation of each good.

  • Experimental Evidence on the Effects of a Coursera Program on Labour Outcomes in Costa Rica
    Last registered on June 18, 2024

    Massive open online courses (MOOCs) are frequently viewed as a tool for democratizing education and job training. However, their effectiveness is largely untested. The existing evidence of the value of online courses is generally based on observational data where the selection of unobservable characteristics is a major concern (see e.g., Castaño-Muñoz and Rodrigues, 2021; Hadavand, 2018). To address this issue, we carry out a randomized controlled experiment in Costa Rica in which the treatment group received cost-free access to Coursera MOOCs and certificates. Additionally, treated individuals were assigned to one of two behavioural intervention arms, where they either received light-touch reminders, or personalised reminders. We are primarily interested in investigating three m...