AEA RCT Registry currently lists 12803 studies with locations in 171 countries.
Across many conflict affected regions, many civilians live under contested sovereignty, where core state functions are performed by different non-state armed actors competing against each other. This raises important questions with consequences for stability and statehood. When civilians live under sustained rebel governance, does their sense of national identity and their trust in state institutions change, and if so, for whom, and through which channels? To answer these, the project fields an original survey of approximately 1,200 civilians in M23-controlled areas of eastern DRC. The survey measures three families of outcomes: attachment to Congolese national versus local and ethnic identity; trust in and the perceived legitimacy of state institutions; and attitudes toward the fiscal-...
During the mid 2010s, counties in Utah began to switch to universal vote by mail. By 2016, 21 out of 29 of Utah’s counties sent all their residents mail in ballots that they could return by mail or via drop box. In 2019, the entire state had moved to universal vote by mail. In 2025, the Utah State Legislature enacted HB300 that required every registered Utah voter to make an active choice of their preferred voter method: by mail or in-person. To make this choice a voter would need to sign into a state website, navigate the voter registration form, and (after re-registering) indicate if they would like to continue to receive a by-mail ballot or stop their by-mail ballot and vote in person. If a voter does not complete the process before the 2028 election, then their in-person ballot wil...
Atlanta Mission is one of the largest providers of homeless shelter services in Atlanta, seeking to build a community united to end homelessness, poverty, and addiction one person at a time. LEO and Atlanta Mission are partnering to conduct an RCT to measure the impact of Atlanta Mission’s programs on key outcomes such as participants’ housing stability and economic stability. Specifically, this RCT will focus on evaluating two of Atlanta Mission’s programs, Make Progress and Workforce Launch as described below. We anticipate our primary comparison to be individuals who are offered Make Progress and those referred out (Control group) due to excess demand, though numbers permitting we hope to make a secondary MP vs. WL comparison, and tertiary WL vs. Control comparison.
A variety of resource allocation decisions, including in health and environmental policy, depend on how much money people are willing to give up to live an extra year of life. This rate of substitution is typically estimated based on compensating differentials for taking on very small risks of death. We develop an alternative approach to estimate this rate of substitution by presenting respondents on the Prolific platform with pairs of hypothetical life stories, or “vignettes,” that describe complete life courses, and ask them to choose which life they would prefer for themselves. We randomize the lifetime incomes and the ages of death in the vignettes. We present a battery of tests to gauge whether these hypothetical choices measure underlying preferences. The benefit of our method is ...
How does the distribution of consumer value differences affect price competition between horizontally differentiated products? We separately vary the average absolute value difference and the concentration of the distribution near zero. Human participants act only as sellers; a computer implements the buyer's purchase. The experiment tests strategic pricing responses to these demand environments.
This research project evaluates the early scale-up of Personalized Teaching to Overcome Marginalization (PTOM), a technology-enabled targeted instruction programme designed to strengthen foundational literacy and numeracy among primary school children in Cambodia. Through a randomised controlled trial involving 750 schools, the study will assess whether different levels of teacher training, virtual monitoring, and implementation support improve programme fidelity and student learning outcomes. The results will generate actionable evidence to help the Ministry of Education, Youth and Sport refine PTOM delivery and support effective scale-up nationwide.
Older investors who are unaware of their cognitive decline can suffer substantial financial wealth losses. A simple model predicts that awareness should lead investors to reduce their risky-asset share and delegate financial control. In an experimental survey of affluent older US investors, we study whether information designed to raise awareness changes their stated financial decisions. We separately provide general information on the financial costs of memory decline and personalized feedback on respondents’ memory performance. We then study how these interventions affect stated preferences for portfolio risk and the delegation of financial decision-making, distinguishing between investors who are initially aware and unaware of their memory decline.
Undeclared work remains widespread in many countries and has important consequences for workers, employers and society. Decisions about whether and how much employment to declare may depend on the perceived costs and benefits of declaration and the institutional circumstances in which these decisions are made. We study how people think about employment declaration decisions involving workers and employers in Italy and Spain. We first measure beliefs and views about the costs and benefits of declared and undeclared employment. We then use a randomized information experiment to test whether providing information about these costs and benefits affects beliefs and decisions.
This individually randomized feasibility pilot tests the implementation of assigned access to a university-provided generative artificial intelligence (AI) tool during formal assessments in one undergraduate course. After the consent deadline, students who have provided informed consent are included in the fixed randomization roster and assigned in approximately equal numbers to two sequences. Sequence G1 receives AI access for the Part A assessment and no AI access for the Part B assessment; G2 receives the reverse sequence. Both groups then complete a common cumulative assessment without AI. Students who do not consent are not randomized, complete all assessments without AI under the examination pathways available in the course, and are excluded from the research dataset. Primary outc...
This within-subject Prolific experiment investigates how cognitive complexity drives choices over lotteries and so-called deterministic mirrors. The experiment comprises two blocks. In the first, replicating Oprea (2024), subjects choose between certain rewards, lotteries, and deterministic mirrors using multiple price lists. In the second, subjects encounter the same objects but are instead asked to provide the expected value of the lottery or the absolute value of the deterministic mirror and are paid based on accuracy. Within this block, we elicit five complexity measures—number of mistakes, deviations from the correct answer, confidence, decision times, and willingness-to-accept complexity costs to avoid doing the task—across three conditions: lotteries, deterministic mirrors, and a...