AEA RCT Registry currently lists 12695 studies with locations in 171 countries.
In partnership with a U.S. municipal government and its local electric utility, we conduct a randomized controlled trial embedded in the City's heat pump incentive program to evaluate how subsidy levels affect adoption of air-source heat pumps (ASHPs) among general-population and low- and moderate-income (LMI) households. Randomization occurs at the address level and claimable within a time-limited window. General-population and LMI addresses are each randomized between two subsidy arms, with LMI eligibility determined through the City's existing income-verification procedures. Primary outcomes are take-up of the assigned subsidy with installation of a qualifying ASHP, and time-to-installation from first portal entry. Secondary outcomes include post-installation electricity consumption ...
We investigate how leaders' gender affects group members' willingness to contribute their ideas and their performance in a series of real-effort tasks using a randomised online experiment. Participants will be assigned to groups of three with one leader and two group members, with each group member responsible for completing a series of tasks and reporting their willingness to answer for the group in each real-effort task. First, we will examine whether participants' willingness to answer for the group is affected by their leader's gender. Second, we will examine whether the quality of their answers is affected by their leader's gender. Third, we are interested in the quality gaps across treatments at different levels of willingness. Finally, we will examine whether participants' conf...
This evaluate a randomized controlled trial focused on whether complementing UCTs with facilitated participation in women's Self-Help Groups (SHGs) generates additional gains in household financial stability and quality of life, and whether the combined intervention is cost-effective. We study 651 female caregivers from households enrolled in Kenya's Inua Jamii-OVC program in Nairobi, randomized at the household level to a control arm (UCT only) or a treatment arm offering facilitated SHG entry, a KES 2,000 contribution subsidy, and a four-day training in life skills and personal finance. Baseline data were collected in March 2025 and endline in June–July 2025. Outcomes span household, caregiver, and child domains. We examine heterogeneity by residential proximity to other treated house...
Career guidance may reduce occupational mismatch, but personalized human provision is costly to scale. I randomize 4,000 young Kenyan jobseekers to human-only, AI-only, hybrid, and control conditions, and separately randomize whether AI support stops at a recommendation or adds a behavioral-activation conversation. Because AI can be constrained, the activation contrast holds the recommendation fixed and measures what the subsequent conversation adds. This turns AI into a research instrument, making otherwise bundled features of counseling experimentally separable. Primary outcomes, measured six to nine months later, are employment, earnings, and match quality, defined as the utility of the job held under participants’ pre-treatment preferences over job attributes. An externally estimate...
This is a randomized-controlled trial in the UK of the impact of Eedi, a math tutoring platform, on the mathematics achievement of Key Stage 3 students (Years 7-9). This project was funded through the Learning Engineering Virtual Institute (LEVI), with support from J-PAL North America.
We study the effect of narrative videos on attitudes toward Ukrainian refugees among Lithuanian adults. We randomly assign approximately 1,500 respondents to one of four 90-second videos describing a refugee journey: three narrative arms (empathy, shared history, economic) and a control. The three videos share a single storyboard and differ only in voice-over. After the video, respondents complete a short decision task involving a current Ukrainian refugee policy proposal, in which they observe how others have responded before forming their own view. Outcomes include the policy choice, a feeling thermometer toward Ukrainian refugees, an incentivised donation, and additional policy-support items. We re-contact respondents one month and six weeks after wave 1 to track how effects evolve.
Several lines of reasoning support the notion to reduce the consumption of meat in developed countries. We conduct a field experiment with a representative sample of the German population to test whether exposure to health (private good), animal welfare (public good, inter-species altruism) or climate change (public good, intra-species altruism) based reasons to reduce meat consumption are (more) effective in inducing dietary changes relative to a control group. Furthermore, the experiment allows to gain further insights on the preferences-intention-behavior gap by observing all three components in a controlled setting.
Feasibility pilot for an online experiment eliciting individuals' willingness to accept (WTA) compensation for providing a voice recording. Using an incentivised Becker–DeGroot–Marschak (BDM) mechanism on Prolific, we elicit the minimum bonus participants will accept to record their voice, and vary (i) whether the recording is anonymised and de-identified versus linked to the participant's personal data, and (ii) whether the recording may be used to train a generative AI voice-synthesis model. The pilot assesses the feasibility of the BDM elicitation, participant comprehension, attrition, and timing, and compares between- and within-subject implementations, in order to calibrate parameters for a future confirmatory study
This study examines how different types of class cadre positions affect student popularity among peers. Class cadre positions are a ubiquitous feature of school classrooms, yet their causal impact on peer relationships remains poorly understood, particularly across different role types. Using a randomized controlled trial, the study randomly assigns eligible students to serve as different types of class cadres or to a control group, and measures multiple dimensions of popularity along with underlying positive and negative mechanisms.
Adolescence and young adulthood are formative periods for sexual and reproductive health and emerging autonomy. During this period, young people navigate changing social roles and relationships, including expectations around gender and sexuality and ideas about what constitutes acceptable behavior. Social approval and perceived expectations may therefore shape not only how young women feel able to express their own views, but also whether they feel able to act on those views when engaging with sensitive topics such as contraception. Importantly, individuals respond to the social environment as they perceive it, which may differ from the underlying distribution of attitudes in that environment. Such discrepancies may lead individuals to make decisions partly on the basis of inaccurate pe...