I'm an assistant professor of economics at the University of Arkansas specializing in behavioral and experimental economics. I use laboratory, field, and online experiments to study questions about education and public policy.
I'm originally from Kansas and received my bachelor's degree from Kansas State University. Before joining the faculty at the University of Arkansas, I studied economics at UC San Diego.
Employer beliefs, employee training, and labor market outcomes: A field experiment in Uganda ($452,000)
Employer beliefs, employee training, and labor market outcomes: A field experiment in Uganda ($16,660)
Examining the impact of waiting periods on improving the use of food subsidies for healthier consumption while maintaining choice ($198,940)
Improving Community College Outcomes through Performance Incentives ($312,000)
Improving Community College Outcomes through Performance Incentives ($25,000)
On the Elicitation of Willingness to Pay for Stigmatized Goods ($4,700)
Prior work demonstrates the importance of college instructor quality, but little is known about whether college instruction can be improved. In a field experiment, we examine the impact of performance-based incentives for community college instructors. We estimate that instructor incentives improve student exam scores by 0.16-0.2 standard deviations (SD), increase course grades by 0.1 SD, reduce course dropout by 17 percent, and increase credit accumulation by 18 percent. The effects are largest among part-time adjunct instructors. During the program, instructor incentives have large positive spillovers to students' unincentivized courses, significantly increasing completion rates and grades in courses outside our study. One year after the program ends, instructor incentives increase transfer rates to four-year colleges by an estimated 22-28 percent, with no impact on two-year college degrees. To test for potential complementarities, we examine the impact of instructor incentives in conjunction with student incentives and find no evidence that the incentives are more effective in combination. Finally, we elicit contract preferences for the loss-framed incentives we offer. At baseline, instructors prefer gain-framed incentives. However, after experiencing loss-framed incentives, instructors significantly increase their preferences for them. [PDF]
Disentangling effort and luck is critical when judging performance. In a principal-agent experiment, we demonstrate that principals' judgments of agent effort are biased by luck, despite perfectly observing the agent's effort. We find that two potential solutions to this "outcome bias"—the opportunity to avoid irrelevant information about luck, and outsourcing judgment to independent third parties—are ineffective. When we give control over information about luck to principals and agents in separate treatments, we find asymmetric sophistication: agents strategically manipulate principals' outcome bias, but principals fail to recognize their own bias. Independent third parties are just as biased as principals. These findings indicate that the scope of outcome bias may be larger than previously understood and that outcome bias cannot be driven solely by emotional responses nor distributional preferences. Instead, we hypothesize that luck directly affects beliefs, and we test this hypothesis by eliciting the beliefs of third parties and principals. Lucky agents are believed to exert more effort than identical, unlucky agents. We propose a model of biased belief updating explaining these results.
Social scientists have observed that socially desirable responding (SDR) often biases unincentivized surveys. Nonetheless, media, campaigns, and markets all employ unincentivized polls to make predictions about electoral outcomes. During the 2016 presidential campaign, we conducted three list experiments to test the effect SDR has on polls of agreement with presidential candidates. We elicit a subject's agreement with either Hillary Clinton or Donald Trump using explicit questioning or an implicit elicitation that allows subjects to conceal their individual responses. We find evidence that explicit polling overstates agreement with Clinton relative to Trump. Subgroup analysis by party identification shows that SDR significantly diminishes explicit statements of agreement with the opposing party's candidate, driven largely by Democrats who are significantly less likely to explicitly state agreement with Trump. We measure economic policy preferences and find no evidence that ideological agreement drives SDR. We find suggestive evidence that local voting patterns predict SDR. [PDF]
Grading on the curve is a form of relative evaluation similar to an all-pay auction or rank-order tournament. The distribution of students drawn into the class from the population is predictably linked to the size of the class. Increasing the class size draws students' percentile ranks closer to their population percentiles. Since grades are awarded based on percentile ranks in the class, this reallocates incentives for effort between students with different abilities. The predicted aggregate effort and the predicted effort from high-ability students increases while the predicted effort from low-ability students decreases. Andreoni and Brownback (2017) find that the size of a contest has a causal impact on the aggregate effort from participants and the distribution of effort among heterogeneous agents. In this paper, I randomly assign "class sizes" to quizzes in an economics course to test these predictions in a real-stakes environment. My within-subjects design controls for student, classroom, and time confounds and finds that the lower variance of larger classes elicits greater effort from all but the lowest-ability students, significantly increasing aggregate effort. [PDF]
We model contests with a fixed proportion of prizes, such as a grading curve, as all-pay auctions where higher effort weakly increases the likelihood of a prize. We find theoretical predictions for the heterogeneous effect auction size has on effort from high- and low-types. We test our predictions in a laboratory experiment that compares behavior in two-bidder, one-prize auctions with behavior in 20-bidder, 10-prize auctions. We find a statistically significant 11.8% increase in aggregate bidding when moving from the small to large auction. The impact is heterogeneous: as the auction size increases, low-types decrease effort but high-types increase effort. Additionally, the larger auction provides a stronger rank-correlation between effort and ability, awarding more prizes to the higher-skilled and improving the efficiency of prize allocation. [NBER link]
We conduct a pre-registered field experiment with low-income grocery shoppers to study how targeted behavioral interventions can improve the effectiveness of healthy food subsidies. Our unique design enables us to elicit choices and deliver subsidies both before and at the point of purchase. We examine the effects of two non-restrictive changes to the choice environment: giving shoppers a choice over the type of subsidy they receive, and introducing a waiting period before the shopping trip to prompt deliberation about the food purchase decision. Combined, our interventions substantially improve the effectiveness of subsidies, increasing healthy purchases by 61% relative to a choice-less subsidy restricted to healthy food, and 199% relative to an un-subsidized control group. We discuss how these low-cost, scalable interventions can help mitigate nutritional inequality. [SSRN Link]
We examine whether summer school is a missed opportunity for colleges to accelerate completion. We randomly assign summer scholarships to community college students and link their educational outcomes to their preferences for the scholarships. The scholarships have a large impact on degree acceleration, increasing graduation within one year of the intervention by 31% and transfers to four-year colleges by 58%. Treatment effects are concentrated among students with a preference against summer school. Our results suggest that educational impacts do not drive enrollment preferences. And, that many more students could benefit from summer school than the small minority who currently enroll. [SSRN Link]
Poll and survey respondents often attempt to present a positive image by engaging in "socially desirable responding" (SDR)--overstating virtuous behaviors or understating stigmatized ones. This paper examines the extent to which observers of polling information anticipate SDR and correct for it when drawing inferences from that information. Among the first stage of subjects, we elicit choices about a series of actions with varying social desirability. We then incentivize a second stage of "predictors" to guess choice behaviors for each action. To help inform these guesses, predictors are randomly assigned to receive subsamples of (i) the choices themselves or (ii) unincentivized claims from other subjects about the hypothetical choices they would have made. Predictors show appropriate skepticism toward the hypothetical claims--and the SDR that they manifest--by relatively downweighting such claims. However, they fail to appreciate the magnitude or identify the direction of SDR. This failure prevails even though subjects, when explicitly asked, correctly predict which actions are most stigmatized or virtuous and thus most prone to SDR. [SSRN Link]