AEA RCT Registry currently lists 11867 studies with locations in 170 countries.

Most Recently Registered Trials

  • Behavioral Consumer Reactions to Product Size Changes
    Last registered on April 01, 2026

    This study examines package size changes. It has two empirical parts: first, we exploit supermarket scanner data by developing an algorithm to identify size changes, which allows us to provide novel descriptive statistics and study how consumer respond to size and price changes. Second, we conduct an online experiment to investigate whether consumers respond differently to these two types of changes and to test whether different ways of displaying information causally affect consumer decisions. We also examine how package size changes affect the welfare of different groups of consumers and discuss how our results relate to different public policies. The empirical analyses are guided and complemented by theoretical models.

  • Improving smallholder agriculture with generative AI: The impact of Farmer.Chat in Kenya
    Last registered on April 01, 2026

    This study evaluates the impact of an AI-powered agricultural advisory chatbot, Farmer.Chat, developed by Digital Green to enhance knowledge, technology adoption, productivity, and income among smallholder farmers in Kenya. Traditional agricultural extension systems in many low- and middle-income countries face persistent capacity and reach constraints, leaving farmers with limited access to timely, tailored information. Digital advisory tools have begun to bridge this gap, yet rigorous evidence on the effectiveness of AI-enabled solutions remains limited. We will implement a cluster-randomized controlled trial (RCT) in 600 villages in Nakuru County, Kenya, to assess the causal effects of access to Farmer.Chat on farmers’ knowledge, uptake of recommended agronomic practices, yields, and...

  • Reducing Barriers to Participation in Eviction Court
    Last registered on April 01, 2026

    We conduct a randomized controlled trial targeting tenants facing eviction in Los Angeles Superior Court.

  • Trust, Accountability, and Reliance on Algorithmic Advice
    Last registered on April 01, 2026

    This preregistered experiment investigates how two organizational factors -- trust in an AI forecasting tool and accountability for AI‑generated errors -- shape individuals’ reliance on algorithmic advice. Participants complete a forecasting task where they predict product demand using two numerical features, with or without the aid of an AI tool. We independently manipulate: (1) Trust, via information about the AI’s development, training data, and reliability; and (2) Accountability, via information about who is responsible for errors generated by the AI tool (the participant vs. an external Analytics Team responsible for monitoring and correcting the AI). In a subsequent experiment, we further decompose the accountability construct into three sub-dimensions -- liability (who bears bla...

  • Equality of Opportunity and Preferences for Redistribution
    Last registered on April 01, 2026

    A prominent stylized fact in contemporary inequality research is that countries with greater inequality of incomes also tend to be countries in which family background plays a stronger role in determining the adult outcomes of young people. This association is commonly referred to as The Great Gatsby Curve. In my research, I examine individuals' fairness views regarding equality of opportunity and intergenerational inequality in a controlled and incentivized experimental framework. More specifically, the empirical approach is the setting where participants act as impartial third-party spectators and make real redistribution decisions on initial allocations. Main research questions are as follows: First, do differences in parental merit justify unequal opportunities for the children? Sec...

  • Information, (Perceived) Admission Chances and Preference Reporting under Deferred Acceptance. An Experimental Study
    Last registered on April 01, 2026

    We study how different types of information about relative priority shape preference reporting under the student-proposing Deferred Acceptance (DA) mechanism, focusing on whether information affects participants’ beliefs about their admission chances and, in turn, their reporting behavior. To address this question, we implement a laboratory school choice experiment in which four students compete for four schools, each with a capacity of one seat. Students have strict preferences over schools: they earn 15 EUR for their top choice, 11 EUR for their second choice, 8 EUR for their third choice, and 4 EUR for their least preferred choice. Schools rank students based on randomly assigned admission scores that determine priority. In each round, participants first submit an initial rank-order...

  • Gender-Reflective Framing and HPV Vaccine Intentions
    Last registered on April 01, 2026

    We evaluate the effectiveness of gender-reflective framing in health communication aimed at increasing HPV vaccination intentions. The human papillomavirus (HPV) causes several cancers in both women and men, yet vaccination coverage in Germany remains below the WHO target and exhibits a pronounced gender gap. Gender-reflective framing emphasizes protection of a specific gender group and may activate identity-based or empathetic motivations in parental decision-making regarding the vaccination of their children. To test this mechanism, we conduct a randomized 2 × 2 × 2 factorial online survey experiment with German parents (target N ≈ 2,160). The treatment varies whether the informational message emphasizes cervical cancer (female frame) or penile cancer (male frame), while the parent’...

  • Timely and Effective Reminder and uptake of Accessible and Effective Antenatal Care (ANC) among Women and Girls in Rural Tanzania
    Last registered on April 01, 2026

    The objective of this study is to evaluate the impact of timely and effective reminder of next antenatal visit on uptake of accessible and effective antenatal care (ANC) services among women and girls in rural Tanzania. This study will evaluate a project being implemented by Canadian Physicians for Aid and Relief (CPAR) Tanzania. The program is being implemented in selected regions of Karatu and Mbulu Districts of rural Tanzania. The CPAR intervention involves providing pregnant women and adolescent girls with accessible and effective ANC, including routine ultrasounds through mobile clinics that will pass through the selected districts. This project targets women who will come for the ANC and ultrasound. During the visits to the mobile clinics, we will conduct baseline survey on all th...

  • Delegation and Endowment Heterogeneity in a Threshold Public Goods Game
    Last registered on April 01, 2026

    We conduct a lab experiment based on a static threshold public goods game with endowment heterogeneity and team delegation. Using a two-by-two between-subjects design, we examine the effects of heterogeneous versus homogeneous team endowments, as well as the impact of delegate selection through elections versus random assignment. We aim to analyze how these two dimensions influence the success rate and efficiency of public goods provision, as well as equilibrium selection. Our experiment sheds light on the roles of wealth inequality and political institutions in global climate cooperation.

  • Do investors properly account for inflation, causal estimates?
    Last registered on April 01, 2026

    Using an experiment, we intend to study the causal effects of providing professional forecaster estimates of inflation on incentivized investor behavior (i.e., asset pricing and portfolio allocation).