AEA RCT Registry currently lists 12130 studies with locations in 170 countries.
This study evaluates the impact of Gemini Guided Learning, an AI-powered instructional experience within Gemini that provides personalised learning through guided questions, step-by-step scaffolding, and multimodal resources rather than supplying direct answers, on mathematics learning in Junior Secondary Schools (JSS1 and JSS2, ages 13–15). The trial randomly assigns classrooms either to continue with regular teaching or to use Gemini in approximately half of their mathematics lessons over an eight to nine (8-9) week period. The same teachers are responsible for both treatment and control classrooms; all will receive training on how to use the tool, though it will only be applied in treatment classes. Mathematics performance of students and teachers will be assessed at the beginning an...
Over-indebtedness among credit card holders is a persistent problem in emerging markets, where many consumers systematically pay below the minimum balance, incurring compounding interest charges and deepening financial vulnerability. In partnership with the Superintendencia de Bancos of the Dominican Republic and its ProUsuario app, we implement a large-scale RCT involving approximately 80,000 revolving-balance credit card users randomly assigned to one of four arms: a control group and three treatment arms differing in message framing (interest-cost salience, debt-cycle motivation, or both) and delivery pattern (fixed, alternating, or combined). Messages are delivered via SMS, push notification, and/or email. Primary outcomes are full balance payment, proportion of debt paid (payment-t...
We study the support for social policy reforms in three policy fields: retirement, unemployment support, and cash transfers to compensate for rising energy prices. We conduct factorial survey experiments to examine which reforms people prefer and through which mechanisms reform characteristics shape support. We focus on three dimensions of reforms characteristics: who benefits, the size of payments, and how reforms are financed.
This project studies a specific policy intended to make workplaces more supportive of women’s needs, which in turn may increase women’s labor force participation, productivity and well-being: the creation of lactation rooms in the workplace to allow women to better combine work and breastfeeding. Kenya passed a law requiring employers all over the country to secure breastfeeding-friendly workplaces by establishing lactation rooms. However, compliance with the law is extremely low. This project aims to i) test solutions to increase compliance with the law by providing information and monetary incentives as well as giving symbolic mandates to committees created for the purpose, ii) compare the effectiveness of mixed-gender versus only-women committees in the creation of women-friendly wor...
We investigate the impact of information statistics and the accompanying narratives about state capacity building on individuals' perceptions and attitudes towards the institutions.
The Centre for Net Zero (CNZ), in partnership with Octopus Energy, will undertake a series of field trials during Octopus Energy’s second Saving Sessions (winter 2023 - 2024). The trials will rigorously evaluate how and why the program itself works to reduce customers’ energy consumption during hours of high grid constraint. We endeavor to build on the success of the 2022-2023 Saving Sessions, which showcased domestic customers' willingness to curtail energy consumption during peak periods, and CNZ’s analysis thereof (Jacob et al., 2023). To do so, we will implement a randomized encouragement design to evaluate the impact of customer participation in Saving Sessions. As the share of renewable energy in the grid continues to grow, the need for effective energy balancing becomes i...
How social ties are formed, maintained, and mobilized has changed with the adoption of digital communication technologies like WhatsApp. This paper estimates the value of communication infrastructure that sustains social networks and examines the short-run causal effects of losing partial access to it on social capital and subjective well-being. We conduct a field experiment in three remote island communities in Indonesia, recruiting approximately 1,200 household heads as participants. To elicit individuals’ willingness to accept a partial daily restriction on WhatsApp usage, we implement the double-bounded dichotomous choice (DBDC) method. Participants are then randomly assigned to a treatment group, in which WhatsApp access is restricted for 4 hours per day over 6 days, or to a contro...
We study how high-school students form beliefs and plans about post-graduation academic programs, and how targeted information shapes these choices. Using a chatbot-based interaction system powered by agent AI using large language models (LLMs), we conduct large-scale conversational interviews with students across Germany to elicit their interests, expectations, and intended educational trajectories as well as the reasoning of those. Embedded in the chatbot is a randomized controlled trial (RCT) to identify the causal effect of two informational treatments: (i) personalized guidance on educational and occupational pathways aligned with each student's mentioned trajectory, and (ii) concrete examples of institutions offering these and alternative pathways. This design enables us to meas...
This project explores consumers’ sensitivity to estimate precision and data quality in their willingness to experiment. Using an incentive-compatible experimental design, we measure participants’ willingness to pay for additional information about uncertain treatments and ability to update their prior beliefs based on this new information.
This study uses an experimental context to measure beliefs regarding treatment success rates after exposure to different promotional materials. The experiment assesses the type of disclosure necessary to update beliefs to be more in line with empirical success rates.