AEA RCT Registry currently lists 12024 studies with locations in 170 countries.
This study investigates whether deterrence messages and social norm messages are complementary or substitutes in generating voluntary tax compliance among firms. Phase 1 employs a 2×2 factorial experimental design involving firms that failed to file their 2024 Industry and Commerce Tax (ICA) declarations in Medellín, Colombia. Using stratified randomization by firm size, sector, and location, firms are assigned to four groups receiving: (1) a neutral reminder (control), (2) deterrence-only message highlighting penalties and enforcement, (3) social norm-only message emphasizing peer compliance rates, or (4) a combined deterrence and social norm message. The primary research question tests whether these mechanisms exhibit complementarity (combined effect exceeds sum of individual effects)...
This study examines whether moral wiggle room—operationalized as selective information avoidance under moral ambiguity that can license self-serving behavior—can arise in the absence of psychological self-image maintenance. A large language model (LLM) is used to generate decision outputs in a canonical moral wiggle room game in which payoff information may be costlessly revealed or avoided prior to an allocation decision. The model is prompted under predefined reasoning frames that impose distinct evaluative criteria. A complementary human-subjects study elicits normative evaluations of potential choices made in the moral wiggle room game. Holding realized outcomes constant, the study examines how information availability affects judgments of social appropriateness, responsibility, and...
Legal or administrative barriers—such as employment bans for asylum seekers—can prevent people from working even when they initially would like to. This study examines whether such temporary barriers reduce people’s willingness to work even after the barriers are removed and explores possible mechanisms driving this effect. In a multi-day online experiment, participants repeatedly choose between a well-paid work option and a lower-paid leisure option. In one treatment, participants are repeatedly prevented from carrying out the work option they choose and are instead assigned to leisure, creating a situation in which access to work is externally restricted. In a control group, participants always have full access to the work option. The central hypothesis is that being repeatedly ...
Update 4.11.2024: Mention of the US elections added. Update 30.4.2026: Abstract updated to include a mention of the extension survey and language is edited. This paper examines individuals’ redistributive preferences and the motivations underlying them. While the effects of information on perceptions of inequality are well established, less is known about how such perceptions translate into preferences for redistributive policies. In addition, relatively little is known about the extent to which policymakers’ preferences align with those of citizens, and whether policymakers accurately perceive citizens’ preferences, particularly when policy choices involve trade-offs. To address these questions, we implement two surveys. The first, conducted in November 2024, focuses on redistribut...
We conducted a randomized field experiment in which an entrepreneur reached out to high-skilled prospective employees regarding a job opening. The gender of the co-founders was randomly altered. We aim to test whether high-skill employees exhibit a differential response rate to a meeting request from a female entrepreneur. Our pilot, which ran in March 2024, indicates that high-skill employees are 50% less likely to respond to a female entrepreneur. To identify the mechanism, we primed a subset of applicants with a newsletter from an unrelated non-profit organization, sent a few days before the entrepreneur’s outreach. The newsletter provided information on large initiatives aimed at supporting female entrepreneurs with venture capital funding. In the pilot, this intervention completely...
This study evaluates an intervention designed to examine whether activities that simulate the use of artificial intelligence (AI)–supported instructional responses can influence literacy teachers’ knowledge, confidence, perceived usefulness, and self-reported skills related to literacy instruction. The intervention is implemented with early grade literacy teachers from four Brazilian municipalities, João Pessoa (PB), Caxias do Sul (RS), Salvador (BA), and Vitória (ES), in partnership with local education authorities. Participants are randomly assigned to receive the intervention either before or after completing a questionnaire, enabling comparisons between teachers exposed to the simulated AI-based activities and those who have not yet participated at the time of assessment. The interv...
This project assesses the extent to which bots and LLMs are used in the online market for survey responses, and how survey payments and performance-based bonuses affect adverse selection (low-quality or automated respondents entering the survey sample) and moral hazard (human workers using LLMs instead of providing authentic responses). We further test whether technical prevention tools and moral persuasion & penalties reduce LLM-generated responses.
Ineffective agricultural extension systems and low-quality learning in schools are two important issues in developing countries. School-based agricultural extension (SBAE) has been shown by Lee (2025) to be a cost-effective platform to overcome the lack of extension officers and motivate school attendance. This study extends one step further to explore SBAE's potential to improve learning via using practical, experiential student experiences in agriculture as a teaser for scientific learning, thereby feeding back into agricultural households' understanding of agricultural technologies and adaptation to their needs. Specifically, we exploit the randomized scaling of SBAE to study the impact of adding an intervention, called "Learning to Learn" (LTL; Nourani et al, 2025). Using a sample o...
The study consists of two distinct experiments that each participant will take part in. Experiment 1 (Responsibility): This project studies how the size of the affected group influences decisions made on behalf of others. We implement a controlled online experiment in which the number of principals varies systematically while convex incentive structures are kept constant across conditions. This design isolates the effect of group size from payoff differences. Participants make decisions under risk for others across a wide range of group sizes, including large-scale settings. The approach enables a clean identification of how group size shapes responsibility and risk-taking. Experiment 2 (Inconsistency): This study tests whether risk preferences elicited via the Gneezy–Potters inve...
Independent media is widely regarded as a cornerstone for democratization, but citizens may respond in diverging ways. This study investigates how locally sourced, uncensored media information influences beliefs, attitudes, and political engagement within an autocratic context. In collaboration with an independent media organization in Kazakhstan, I conduct a field experiment in which individuals are randomly assigned to receive non-mainstream political information via a fact-checking service. The intervention lowers the cost of accessing independent information by delivering daily fact-checked messages via a dedicated channel on a popular social media platform. Evidence from the pilot study indicates that exposure to independent information leads individuals to update their beliefs abo...