John A List, Jeffrey A Livingston, Susanne Neckermann
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In the face of worryingly low performance on standardized test, offering students financial incentives linked to academic performance has been proposed as a potentially cost-effective way to support improvement. However, a large literature across disciplines finds that extrinsic incentives, once removed, may crowd out intrinsic motivation on subsequent, similar tasks. We conduct a field experiment where students, parents, and tutors are offered incentives designed to encourage student preparation for a high-stakes state test. The incentives reward performance on a separate low-stakes assessment designed to measure the same skills as the high-stakes test. Performance on the high-stakes test, however, is not incentivized. We find substantial treatment effects on the incented tests but no effect on the non-incented test; if anything, the incentives result in worse performance on the non-incented test. We also find evidence supporting the conclusion that the incentives crowd out intrinsic motivation to perform well on the non-incented test, but this effect is only temporary. One year later, students who had been in the incentives treatments perform better than those in the control on the same non-incented test.
Anouar El Haji, Michal Krawczyk, Marta Sylwestrzak, Ewa Zawojska
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Auctions often require risk taking under time pressure. However, little is known about how time pressure moderates the relationship between uncertainty of outcomes and bidding behavior. This study consists of a field experiment in which participants are invited to a Vickrey auction to elicit their willingness to pay for a lottery ticket. The time available to place a bid and also the skewness of the lottery (holding the expected value constant) are systematically manipulated. We find that under high time pressure participants are less likely to place a bid at all. Furthermore, participants who do place a bid under high time pressure bid significantly less than participants under low time pressure. The main finding is thus that increased time pressure significantly decreases risk taking. The effect seems to be particularly strong for the lottery with a high probability of winning and for female subjects.
Kazi Iqbal, Asad Islam, John A List, Vy Nguyen
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Whether, and to what extent, behavioral anomalies uncovered in the lab manifest themselves in the field remains of first order importance in finance and economics. We begin by examining behavior of retail traders/investors making investment decisions in constructed laboratory markets. Our results show that the behaviors of the traders are consistent with myopic loss aversion. We combine the lab results with a unique individual-level matched dataset on daily stock market transactions and portfolio positions over a two year period. We find that lab behaviors help to predict, but do not fully capture, the essential real-world trading analogs of retail traders.
Andrea Morone, Paola Tiranzoni
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This study presents an analysis of hypothetical bias in WTA valuation connected with a bargaining game setting, in a field experiment context. The field of the experiment is the History Channel television "Pawn Stars". We collected a unique dataset that allowed us to analyze not only the gap between real and hypothetical WTA but also how they affect the bargaining game and vice versa. The general aim of this paper is to study the hypothetical bias related to subjects' WTA, and the factors that mostly affect it. The main results, of our paper, show that the hypothetical bias is positive, and it depends mainly on the price range and the type of good.
Omar Al-Ubaydli, John A List
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This is a review of the literature of field experimental studies of markets. The main results covered by the review are as follows: (1) Generally speaking, markets organize the efficient exchange of commodities; (2) There are some behavioral anomalies that impede efficient exchange; (3) Many behavioral anomalies disappear when traders are experienced.
Wojciech Hardy, Michal Krawczyk, Joanna Tyrowicz
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In this project, we investigate downloading and sharing behaviour in a novel 'piracy game' modelled after standard public good games. We find that willingness to share correlates positively with the sharing by others. By contrast, actual behaviour in the 'piracy game' is not correlated with self-reported behaviour.
Eliot Abrams, Jonathan Libgober, John A List
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The past few decades have ushered in an experimental revolution in economics whereby scholars are now much more likely to generate their own data. While there are virtues associated with this movement, there are concomitant difficulties. Several scientific disciplines, including economics, have launched research registries in an effort to attenuate key inferential issues. This study assesses registries both empirically and theoretically, with a special focus on the AEA registry. We find that over 90% of randomized controlled trials (RCTs) in economics do not register, only 50% of the RCTs that register do so before the intervention begins, and the majority of these preregistrations are not detailed enough to significantly aid inference. Our empirical analysis further shows that using other scientific registries as aspirational examples is misguided, as their perceived success in tackling the main issues is largely a myth. In light of these facts, we advance a simple economic model to explore potential improvements. A key insight from the model is that removal of the (current) option to register completed RCTs could increase the fraction of trials that register. We also argue that linking IRB applications to registrations could further increase registry effectiveness.
Shubha Chakravarty, Mattias Lundberg, Plamen Nikolov, Juliane Zenker
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Lack of skills is arguably one of the most important determinants of high levels of unemployment and poverty. In response, policymakers often initiate vocational training programs in effort to enhance skill formation among the youth. Using a regression-discontinuity design, we examine a large youth training intervention in Nepal. We find, twelve months after the start of the training program, that the intervention generated an increase in non-farm employment of 10 percentage points (ITT estimates) and up to 31 percentage points for program compliers (LATE estimates). We also detect sizable gains in monthly earnings. Women who start self-employment activities inside their homes largely drive these impacts. We argue that low baseline educational levels and non-farm employment levels and Nepal's social and cultural norms towards women drive our large program impacts. Our results suggest that the program enables otherwise underemployed women to earn an income while staying at home - close to household errands and in line with the socio-cultural norms that prevent them from taking up employment outside the house.
John A List
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Last year I put together a summary of data from my field experiments website that pertained to framed field experiments. Several people have asked if I have an update. In this document I update all figures and numbers to show the details for 2020. I also include the description from the 2019 paper below.
Roland Fryer , Steven D Levitt, John A List, Anya Samek
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We present the results of a novel early childhood intervention in which disadvantaged 3-4-year-old children were randomized to receive a new preschool and parents education program focused on cognitive and non-cognitive skills (CogX) or to a control group that did not receive preschool education. In addition to a typical academic year (9 month) program, we also evaluated a shortened summer version of the program (2 months) in which children were treated immediately prior to the start of Kindergarten. Both programs, including the shortened version, significantly improved cognitive test scores by about one quarter of a standard deviation relative to the control group at the end of the year. The shortened version of the program was equally as effective as the academic-year program because most of the gains in the academic-year program occurred within the first few months.
John A List, Zacharias Maniadis, Fabio Tufano
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The sciences are in an era o fan alleged "credibility crisis'. In this study, we discuss the reproducibility of empirical results, focusing on economics research. By combining theory and empirical evidence, we discuss the import of replication studies, and whether they improve our confidence in novel findings. The theory sheds light on the importance of replications, even when replications are subject to bias. We then present a pilot meta-study of replication in experimental economics, a subfield serving as a positive benchmark for investigating the credibility of economics. Our meta-study highlights certain difficulties when applying meta-research (Ioannidis et al., 2015) and systematizing the economics literature.
John A List
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In 2019 I put together a summary of data from my field experiments website that pertained to framed field experiments. Several people have asked me if I have update. In this document I update all figures and numbers to show the details for 2021. I also include the description from the 2019 paper below.
Greer K Gosnell, John A List, Robert D Metcalfe
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Increasing evidence indicates the importance of management in determining firms' productivity. Yet, causal evidence regarding the effectiveness of management practices is scarce, especially for high-skilled workers in the developed world. In an eight-month field experiment measuring the productivity of captains in the commercial aviation sector, we test four distinct management practices: (i) performance monitoring; (ii) performance feedback; (iii) target setting; and (iv) prosocial incentives. We find that these management practices -particularly performance monitoring and target setting- significantly increase captains' productivity with respect to the targeted fuel-saving dimensions. We identify positive spillovers of the tested management practices on job satisfaction and carbon dioxide emissions, and captains overwhelmingly express desire for deeper managerial engagement. Both the implementation and the results of the study reveal an uncharted opportunity for management researchers to delve into the black box of firms and rigorously examine the determinants of productivity amongst skilled labor.
Michal Krawczyk
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Several studies have identified the "better than average" effect - the tendency of most people to think they are better than most other people on most dimensions. The effect would have profound consequences (see e.g. Barber and Odean (2001)). These findings are predominantly based on non-incentivized, non-verifiable self-reports. The current study looks at the impact of incentives to judge one's abilities accurately in a framed field experiment. Nearly 400 students were asked to predict whether they would do better or worse than average in an exam. The most important findings are that subjects tend to show more confidence when incentivized and when asked before the exam rather than afterwards. The first effect shows particularly in females.
John A List
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While empirical economics has made important strides over the past half century, there is a recent attack that threatens the foundations of the empirical approach in economics: external validity. Certain dogmatic arguments are not new, yet in some circles the generalizability question is beyond dispute, rendering empirical work as a passive enterprise based on frivolity. Such arguments serve to caution even the staunchest empirical advocates from even starting an empirical inquiry in a novel setting. In its simplest form, questions of external validity revolve around whether the results of the received study can be generalized to different people, situations, stimuli, and time periods. This study clarifies and places the external validity crisis into perspective by taking a unique glimpse into the grandest of trials: The External Validity Trial. A key outcome of the proceedings is an Author Onus Probandi, which outlines four key areas that every study should report to address external validity. Such an evaluative approach properly rewards empirical advances and justly recognizes inherent empirical limitations.
Omar Al-Ubaydli, John A List, Claire Mackevicius, Min Sok Lee, Dana L Suskind
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Policymakers are increasingly turning to insights gained from the experimental method as a means to inform large scale public policies. Critics view this increased usage as premature, pointing to the fact that many experimentally-tested programs fail to deliver their promise at scale. Under this view, the experimental approach drives too much public policy. Yet, if policymakers could be more confident that the original research findings would be delivered at scale, even the staunchest critics would carve out a larger role for experiments to inform policy. Leveraging the economic framework of Al-Ubaydli et al. (2019), we put forward 12 simple proposals, spanning researchers, policymakers, funders, and stakeholders, which together tackle the most vexing scalability threats. The framework highlights that only after we deepen our understanding of the scale up problem will we be on solid ground to argue that scientific experiments should hold a more prominent place in the policymaker's quiver.
Eszter Czibor, David Jimenez-Gomez, John A List
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What was once broadly viewed as an impossibility - learning from experimental data in economics - has now become commonplace. Governmental bodies, think tanks, and corporations around the world employ teams of experimental researchers to answer their most pressing questions. For their part, in the past two decades academics have begun to more actively partner with organizations to generate data via field experimentation. While this revolution in evidence-based approaches has served to deepen the economic science, recently a credibility crisis has caused even the most ardent experimental proponents to pause. This study takes a step back from the burgeoning experimental literature and introduces 12 actions that might help to alleviate this credibility crisis and raise experimental economics to an even higher level. In this way, we view our "12 action wish list" as discussion points to enrich the field.
Greg Allenby, Russell Belk, Catherine Eckel, Robert Fisher, Ernan Haruvy, John A List, Yu Ma, Peter Popkowski Leszczyc, Yu Wang, Sherry Xin Li
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We offer a unified conceptual, behavioral, and econometric framework for optimal fundraising that deals with both synergies and discrepancies between approaches from economics, consumer behavior, and sociology. The purpose is to offer a framework that can bridge differences and open a dialogue between disciplines in order to facilitate optimal fundraising design. The literature is extensive, and our purpose is to offer a brief background and perspective on each of the approaches, provide an integrated framework leading to new insights, and discuss areas of future research.
Gary Charness, John A List, Aldo Rustichini, Anya Samek, Jeroen van de Ven
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Theory of Mind (ToM), the ability to correctly attribute mental states to others, is important in social interactions. We evaluate the development of ToM in about 800 mostly disadvantaged children. We next conduct a field experiment with about 160 children in which we find that the low ToM rates for these disadvantaged children improve substantially in environments where the presence of other children is made salient. We see that ToM performance increases for both younger and older children in the treatment with strong salience, but that the treatment with weaker salience seems to be only effective in improving the ToM rates for older children.
John A List, Lina Ramirez, Julia Seither, Jaime Unda, Beatriz Vallejo
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Misinformation represents a vital threat to the societal fabric of modern economies. While the supply side of the misinformation market has begun to receive increased scrutiny, the demand side has received scant attention. We explore the demand for misinformation through the lens of augmenting critical thinking skills in a field experiment during the 2022 Presidential election in Colombia. Data from roughly 2.000 individual suggest that our treatments enhance critical thinking, causing subjects to more carefully consider the truthfulness of potential misinformation. We furthermore provide evidence that reducing the demand of fake news can deliver on the dual goal of reducing the spread of fake news by encouraging reporting of misinformation.