AEA RCT Registry currently lists 12626 studies with locations in 171 countries.
Leveraging administrative data from a province-wide soil-testing program in China,While under-adoption of technology in agriculture is widely discussed, the inappropriate use of technology/input has become a matter of concern. We find strong evidence that farmers in China tend to overuse nitrogen fertilizer and underuse fertilizers in other dimensions, including phosphorus and potassium. Such decision making is affected by the crops' growing stages before the ripening, in which nitrogen provides observable signals on plants while phosphorus and potassium do not. We propose two randomized controlled trials to examine the effects of noticing/improved learning on the appropriate adoption of fertilizers. Our interventions consist in providing soil testing information, fertilizer recommendat...
In sub-Saharan Africa, where the population is rapidly increasing and arable land per capita is declining, enhancing agricultural productivity is critical for food security and poverty alleviation. One major challenge to crop production in the region is the very low use of chemical fertilizers. Addressing this issue, a rice cultivation technique known as P-dipping has been developed. This process involves submerging rice seedlings in a mud slurry mixed with a small amount of Triple Super Phosphate (TSP) fertilizer before transplanting them. P-dipping is particularly promising as it significantly boosts rice yields, even in tropical soils, with minimal fertilizer input, making it accessible for smallholder farmers with limited financial resources. However, the underdeveloped fertilizer m...
This study will evaluate the effectiveness of the Remote Triple P (Positive Parenting Program) Level 4 Group intervention for primary caregivers of children aged 4 to 12 in the Metropolitan Region of Chile. While Triple P is an evidence-based behavioral family intervention with widespread global evaluation, a significant gap remains in the literature regarding its effectiveness within Latin American populations. To address this gap, this study will conduct an individual-level randomized controlled trial (RCT) with a target sample of 400 families. Eligible participants will be randomly assigned in a 1:1 ratio into either a treatment group receiving the free 8-week online program (combining synchronous group sessions and individual consultations) or a pure control group. Randomization wil...
This study explores how incentives for using a mindfulness app affect use and outcomes such stress levels, sleep, ability to focus. This study conducted at UC Santa Barbara in Fall 2024, will recruit a large sample of undergraduate students. Data on app download and usage and survey data will be collected from participants.
Digital credit through mobile money has expanded rapidly in Mozambique. Yet many users do not know the basic terms of the products available to them, including the service fee, the repayment deadline, the automatic deduction of wallet inflows while a debt is unpaid, and the consequences of non-payment. This study tests whether accurate information about Txuna, the digital credit product offered through M-Pesa, changes how market micro-entrepreneurs in Maputo understand and use digital credit. We interview approximately 1,400 micro-entrepreneurs aged 21 or older who hold an active M-Pesa account registered in their own name, in 14 markets randomly drawn from the official municipal register of Maputo markets and stratified by municipal district and market category. Within each market, res...
Although economists and other social scientists have worked hard trying to disentangle what factors can explain differences between performances across schools, there are few studies about the impact of management on education. For example, the discussion about management on productivity has not caught strong attention from economists (Bloom et al., 2012, p. 2). In the case of causal evidence coming from randomized trials, the gap is even larger. Despite a growing number of randomized experiments conducted by social researchers to address critical scientific questions on policies in the last decades, very few trials have been undertaken to explore the causal consequences of management on productivity (Duflo, 2007; Fryer, 2017). Thus, this research intends to reduce this knowledge gap by...
In South Sudan, the delivery of assistance is shaped by constraints on infrastructure, access to technology, and financial literacy. This study evaluates the comparative effectiveness of delivering transfers via mobile money relative to traditional cash transfers in a low-connectivity, fragile setting. While digital transfers have the potential to reduce transaction costs, improve the safety of delivery, offer recipients greater flexibility in managing their resources, and expand financial inclusion, limited access to mobile networks, low penetration of mobile phones, and poor mobile vendor infrastructure may constrain their impact. Using an experimental design, we compare outcomes across delivery modalities, focusing on take-up and use of mobile money, welfare, financial inclusion,...
Improving public trust in public health services is a challenge in many developing countries. One of the possible reasons behind this may be low level of public trust in public health services. This study aims to clarify whether providing truthful positive information about public health services can improve people’s trust in public health services.
We study whether beliefs about the labor-market exposure to artificial intelligence (AI) causally affect the demand for redistribution. The experiment is embedded in wave 15 (fielded in the second half of 2026) of a long-running Japanese national online panel (the NIRA-Okubo survey, where NIRA is the Nippon Institute for Research Advancement; about 10,000 respondents per wave since April 2020). Early in the survey, all respondents state a prior belief: out of 100 working people in Japan, how many are in jobs with high exposure to AI (numeric answer, 0-100). A randomly selected half of respondents is later shown a short, truthful statement, based on published staff estimates of an international organization, about the estimated share of working people in Japan in jobs with high exposure ...
This study examines how employees respond to organizational policy changes and the justifications managers provide for those changes. A managerial pre-study was conducted to obtain managers’ policy decisions and accompanying justifications. Following completion of the managerial pre-study, we have revised the implementation plan for the employee experiments. The revised employee experiment uses a 2 (Policy Change: Abandon vs. Double Down) × 2 (Justification: Business vs. Moral) between-subjects design in the context of an organizational sustainability policy. The study examines how the direction of a policy change and the manager’s justification jointly influence employee responses, including honesty and turnover intentions. The revised employee experiment is limited to the Sus...