AEA RCT Registry currently lists 12464 studies with locations in 171 countries.
This study evaluates home-based growth monitoring (HBGM) as a strategy to reduce child stunting in rural Pakistan by optimizing community health worker —locally known as community resource person (CRP)— resources. Pakistan has one of the highest regional stunting rates, with rural Sindh particularly affected. Building on evidence from an earlier urban trial in Karachi, we implement a cluster-randomized controlled trial in 200 villages, sampling 15 households per village. Villages are assigned to a control group, Treatment 1 (HBGM with monthly Lady Health Worker visits and counselling), or Treatment 2 (HBGM-light with initial counselling and biweekly automated voice messages). The study examines the effects of the treatments on stunting, wasting, caregiver knowledge, dietary and hygiene ...
Given the high prevalence of mental health issues, such as anxiety and depression, in pretrial detainees, the Swiss Federal Justice Department (SFJD) approved a model trial. The model trial will be carried out in 11 pretrial detention facilities in the cantons of Zurich and Bern and aims to improve the wellbeing and social reintegration of individuals in pretrial detention. As part of the model trial we are evaluating the impact of two interventions using a randomized controlled trial. The first intervention, “Prison Stress Management” (PRISMA), addresses the issue of poor mental health of inmates during pretrial detention and after release. The second intervention (SOCIAL) uses proactive social services to address potential disruptions (e.g., in employment, social relations, and ho...
Many young people would like to stay in Senegal but consider migration because they perceive limited opportunities where they live. At the same time, many urban areas already host training programs, employment services, and support schemes for entrepreneurship, but young people often lack information about these options or face difficulties accessing them. This study evaluates whether a one-day information and guidance workshop can improve young people's awareness of and engagement with locally available opportunities. The workshop provides structured information on existing training, employment, and entrepreneurship services in the city, shares experiences of young people who have pursued local pathways, and offers simple, practical guidance on initial steps such as contacting servi...
This study aims to examine the impact of integrating refugees into Ethiopia’s national digital identification document (ID) program ‘Fayda’, providing them with a form of government ID that is valid and widely recognised across the country. Globally, approximately 850 million people lack official IDs, with populations living in fragile and conflict-affected contexts disproportionately affected. This ‘identity gap’ perpetuates cycles of poverty and exclusion by limiting access to services and economic opportunities. In collaboration with the Government of Ethiopia, we implement a large-scale randomized controlled trial, in which randomly selected refugee households in three regions of the country receive early access to the national ID program. We will assess the causal impact of receivi...
We study whether telling loan applicants what other borrowers ask for changes how much they themselves request. Does it matter whether the information is about male peers, female peers, or borrowers in general? And do men and women react differently? We work with a microfinance institution in Kenya, and the study is embedded in the institution's routine loan-application phone call. Applicants are randomly assigned to hear the average requested amount of a random sample of similar past borrowers (same area and age bracket): either male applicants, female applicants, or applicants in general. A control group receives no information.
The aim of this project is to investigate the impact of trade cost uncertainty on the expectations of Swiss firms and more specifically on their turnover and prices. To this end, an online survey experiment is conducted as part of the KOF Business Survey, in which participating firms receive a vignette - a hypothetical trade cost scenario.
We will explore whether strengthening local identity can influence cooperation between host-community members and migrants in a Colombian community that has experienced substantial Venezuelan immigration. Using a lab-in-the-field experiment, participants will engage in incentivized economic games that measure different dimensions of prosocial behavior, including volunteerism, altruism, cooperation, and common-pool resource management. We vary group composition by migration status and expose participants to contextual cues designed to increase or decrease the salience of local identity. We investigate whether these cues affect cooperation and collective action in mixed groups and whether their effects vary with group composition. The project contributes to understanding how local identit...
How well do people anticipate the effects of social observation on their own behavior? We test this in an online real-effort experiment in which participants complete four within-subject 5-minute rounds whose output funds a charitable donation. The rounds vary along two dimensions: (i) whether the participant's effort is observed live by another person via video, and (ii) whether the participant receives a personal piece-rate bonus on top of the donation. Each participant is assigned to one of eight counterbalanced orders that nest the observability manipulation (Anonymous vs. Video) either in the first or second half of the experiment and the piece-rate manipulation (standard vs. higher rate) in the other half. Before any round begins, we elicit participants' predictions of their own e...
This study tests whether an affordable, scalable mental health program can reduce psychological barriers to work in a socially stratified labor market. I conduct a two-arm randomized controlled trial among working-age adults in India with moderate to severe depression. Participants in the treatment group receive a guided self-help program adapted from the World Health Organization's Step-by-Step protocol, delivered through a chatbot with weekly support calls from trained guides. The control group receives care-as-usual. Randomization is stratified by gender, baseline income, and baseline mental health. Outcomes are measured at 3-, 6-, and 12-month follow-ups and cover mental health, economic, and social outcomes, as well as the mechanisms linking mental health to economic participation....
This experiment studies electronics repair prices in 12 different countries. We are interested in the difference in prices between when the customer states the required repair (an ORDinary good) and when the customer states they have no idea what is wrong (a CREdence good). Each repair store will conduct an ORD and CRE repair, where the order of these repairs will be randomized at the store level. Repair stores will be randomly selected from a list scraped using Google Maps, but are ‘excluded’ if they cannot complete both repairs. The sample size will be 30 stores (60 total repairs) per country, or 720 repairs overall. Note: The data collection is conducted by a commercial partner. They have begun the data collection, but have not shared any provisional data with any of the authors a...