Discussion Paper No. 582
September 9, 2026
Gambling for Retirement: The Hidden Costs of Savings Lotteries in a Nationwide Experiment
Author:
Abstract:
Governments increasingly encourage socially desirable behavior with probabilistic incentives. We study such “Pigouvian lotteries” in a retirement-savings field experiment with 387,000 workers in Colombia’s public pension system. The lotteries induce sharp bunching at qualification thresholds, but workers mostly meet them by retiming rather than increasing deposits, leaving overall savings largely unaffected. Lotteries further crowd out valuable life and disability insurance and disproportionately reward wealthier savers. A welfare analysis shows that, once we account for these unintended consequences, lotteries reduce welfare. Our findings illustrate that behavioral spillovers across time and choice domains can reverse the verdict on behavioral public policies.
Keywords:
retirement savings; prize-linked savings; paternalism; informality; household finance;
JEL-Classification:
D14; D91; H55; C93; G52;
Download:
Discussion Paper No. 584
Fairness Views and Beliefs about the International Distribution of Climate Change Costs
Author:
Abstract:
International climate negotiations focus on three distinct climate change costs: mitigation, adaptation and loss and damage. This paper measures voters' fairness views about how these costs should be allocated between nations, and investigates whether fairness views and beliefs about a country's responsibility matter for policy support. In an online survey experiment, the paper finds that fairness views vary with the type of cost, that voters underestimate their country responsibility, and that fairness views and beliefs jointly predict voters' climate policy preferences. The paper also implements tailored treatments to test whether fairness views and beliefs causally affect policy support, but it finds no evidence of a causal link. The results highlight that, to be consistent with citizens' fairness ideals, the international distribution of mitigation costs should differ from the one of adaptation and loss and damage.
Keywords:
climate change; international negotiations; policy support; fairness; misperceptions;
JEL-Classification:
D63; D91; F53; H41; Q54;
Download:
Discussion Paper No. 575
Juni 3, 2026
Talking Across the Aisle
Author:
Abstract:
We conduct an experiment that engages U.S. Democrats and Republicans in video conversations about policy-relevant facts. We study self-selection into conversations and their effect on information aggregation and affective polarization. Participants prefer co-partisan conversations, believing cross-partisan conversations to be less informative and less pleasant. There is more to learn from counter-partisans, but participants find it harder to extract knowledge from them. Our rich audiovisual data reveal that co- and cross-partisan conversations are strikingly similar in content and tone. Yet, knowledge extraction is impeded by participants' persistent lack of trust in the knowledge of counter-partisans. In contrast, cross-partisan interactions prove more enjoyable than anticipated and significantly reduce affective polarization, an effect that persists in an obfuscated follow-up survey three months later. More emotionally engaged conversations produce larger reductions in affective polarization. Policies encouraging cross-partisan interactions may be more successful at reducing affective polarization than at promoting information aggregation.
Keywords:
cross-partisan interactions; partisan sorting; echo chambers; information diffusion; affective polarization; misperceptions;
JEL-Classification:
C93; D83; D9;
Download:
Discussion Paper No. 574
Juni 1, 2026
Social Anxiety and Evaluative Interviews
Author:
Abstract:
Evaluative social interactions are pervasive in labor markets. Inequality in these settings can arise not only from how individuals are treated or perform when evaluated, but from whether they enter evaluation at all. We study these margins in the context of social anxiety. In a controlled online experiment (N = 922), applicants decide whether to complete a live video interview that determines a monetary hiring bonus. We find that inequities associated with social anxiety are concentrated in participation rather than in performance or treatment. Socially anxious applicants are substantially less willing to interview, hold more pessimistic beliefs about being hired, and correctly anticipate a worse experience. Yet they perform no worse and are evaluated no differently. Interview experience does not attenuate the relative pessimism of socially anxious individuals, a pattern that is inconsistent with Bayesian updating under comparable signals. We use our rich audio-visual data and open-ended reflection texts to show that, instead, socially anxious applicants interpret similar interactions more negatively. We then provide evidence on organizational interventions aimed at closing social anxiety gaps. Finally, we show that social anxiety explains a meaningful share of inequalities commonly attributed to gender and social skill differences and is associated with significant earnings gaps in national data.
Keywords:
social anxiety; job interviews; beliefs; mental health; discrimination; learning;
JEL-Classification:
D83; J71; I10; C90;
Download:
Discussion Paper No. 572
Mai 14, 2026
Some Simple Economics of Green Markets
Author:
Abstract:
Policymakers seek to reduce environmentally harmful production by leveraging consumers' demand for low-externality products. Should the exchange of such products be organized under the standard principle of ``one market for one good", creating a separate market for green goods and integrating regional green markets? We show that this reduces harmful production if and only if green demand is sufficiently strong relative to green supply. Otherwise, a ``demand displacement effect" arises: stronger demand for green goods induces substitution toward brown goods, thereby increasing externalities. This effect interacts with other policy instruments.
Keywords:
green markets; socially responsible consumers; externalities; market segmentation; demand displacement; environmental policy;
JEL-Classification:
D62; D64; Q58;
Download:
Discussion Paper No. 570
April 15, 2026
Open Science in den Wirtschaftswissenschaften: Transparenz, Reproduzierbarkeit und Zugang
Author:
Abstract:
Der Beitrag diskutiert Open Science in den Wirtschaftswissenschaften als Bündel von Praktiken zur Verbesserung von Transparenz, Reproduzierbarkeit und Zugänglichkeit wissenschaftlicher Forschung. Der Artikel zeigt, dass Präregistrierungen und Registered Reports, Open Data und Open Code sowie Open Access die Glaubwürdigkeit empirischer Forschung stärken können, zugleich aber disziplinspezifische Grenzen und Zielkonflikte berücksichtigen müssen. Für die Wirtschaftswissenschaften und die Forschungsförderung folgt daraus die Notwendigkeit verlässlicher Infrastrukturen, klarer Standards und nachhaltiger institutioneller Unterstützung, insbesondere für nicht-kommerzielle Open-Access-Modelle wie Diamond Open Access.
Keywords:
open science; präregistrierung; reproduzierbarkeit; open access;
JEL-Classification:
B41; C81; I23;
Download:
Discussion Paper No. 562
Januar 26, 2026
A Horserace of Methods for Eliciting Induced Beliefs Online
Author:
Abstract:
This study evaluates the effectiveness of three widely used belief elicitation methods in an online setting: the binarized scoring rule (BSR), the stochastic Becker-DeGroot-Marschak mechanism (BDM), and unincentivized introspection. Despite the theoretical advantages of incentive-compatible methods (BSR and BDM), we find that they impose significantly higher cognitive costs on participants, requiring more time and effort to implement, without delivering clear improvements in belief accuracy. In fact, BSR systematically leads to greater errors in reported beliefs compared to introspection, while BDM also reduces accuracy, though to a lesser extent. Surprisingly, individual differences in probabilistic reasoning skills do not mitigate these errors for BSR but do help improve accuracy under BDM. Our findings suggest that simpler, unincentivized approaches may offer comparable or even superior accuracy at a lower cognitive cost. These results have broad implications for the design of experiments and the interpretation of belief data in behavioral and experimental economics.
Keywords:
belief elicitation; induced beliefs; incentives; online experiment;
JEL-Classification:
C81; C89; D83; D91;
Download:
Discussion Paper No. 529
April 10, 2025
Correcting Consumer Misperceptions about CO2 emissions
Author:
Abstract:
Policy makers frequently champion information provision about carbon impact on the premise that consumers are willing to mitigate their emissions but are poorly informed about how to do so. We empirically test this argument and reject it. We collect an extensive new dataset and find both large misperceptions of the carbon impact of different consumption behaviors and clear preferences for mitigation. Yet, in two separate experiments, we show that correcting beliefs has no effect on consumption in large representative samples. Our null results are well-powered and informative, as we target information for maximal impact. These results call into question the potential of correcting carbon footprint misperceptions as a tool to fight climate change.
Keywords:
climate change; carbon emissions; information provision; consumer behavior;
JEL-Classification:
C81; C93; D84; Q54;
Download:
Discussion Paper No. 528
März 8, 2025
Personalized Reminders: Evidence from a Field Experiment with Voluntary Retirement Savings in Colombia
Author:
Abstract:
A large share of the global workforce lacks access to employer-sponsored retire- ment plans. In Colombia, where labor informality is high, the government introduced the Beneficios Económicos Periódicos (BEPS) program to promote voluntary retirement savings. However, many enrollees fail to contribute regularly. We conduct a randomized controlled trial with 2,819 BEPS users, assigning them to different planning and monthly reminder treatments, where reminders are tailored in their timing. We find that personalized reminders significantly increase both the frequency and amount of savings, with individuals who recognize their forgetfulness more likely to demand reminders. Our findings highlight the role of reminders tailored to individuals’ preferred timing in sustaining engagement in voluntary savings programs.
Keywords:
retirement savings; personalized reminders; limited attention; financial inclusion;
JEL-Classification:
D91; G41; O16;
Download:
Discussion Paper No. 489
Dezember 29, 2023
How to Increase Public Support for Carbon Pricing
Author:
Abstract:
The public acceptability of a carbon price depends on how the revenues from carbon pricing are used. In a fully incentivised experiment with a large representative sample of the German population, we compare five different revenue recycling schemes and show that support for a carbon price is maximised by a “Climate Premium” that pays a fixed, uniform, upfront payment to each person. This recycling scheme receives more support than tax and dividend schemes, than using revenues for the general budget of the government, and than earmarking revenues for environmental projects. Furthermore, we show that participants and experts underestimate the public support for carbon pricing.
Keywords:
carbon pricing; pigovian taxation; political support for carbon taxes; survey experiments;
JEL-Classification:
H23; P18; C9; D9;