Voting to Tell Others [Final Version: Sep 2016]

Abstract: Why do people vote? We design a field experiment to estimate a model of voting `because others will ask'. The expectation of being asked motivates turnout if individuals derive pride from telling others that they voted, or feel shame from admitting that they did not vote, provided that lying is costly. In a door-to-door survey about election turnout, we experimentally vary (i) the informational content and use of a flyer pre-announcing the survey, (ii) the duration and payment for the survey, and (iii) the incentives to lie about past voting. The experimental results indicate significant social image concerns. For the 2010 Congressional election, we estimate a value of voting ‘to tell others’ of about $15, contributing 2 percentage points to turnout. Lastly, we evaluate a get-out-the-vote intervention in which we tell potential voters that we will ask if they voted.

[online appendix]  [data and code]

Familiarity Does Not Breed Contempt: Diversity, Discrimination and Generosity in Delhi Schools

Abstract: I exploit a natural experiment in India to identify ho[w mixing rich and poor students in schools affects social preferences and behaviors. A policy change in 2007 forced many private schools in Delhi to meet a quota of poor children in admissions. This led to a sharp increase in the presence of poor children in new cohorts in those schools, but not in older cohorts or in other schools. Exploiting this variation, and using a combination of field and lab experiments, administrative data and test scores, I study impacts on three classes of outcomes: (i) prosocial behavior, (ii) social interactions and discrimination, and (iii) academic outcomes. First, I find that having poor classmates makes wealthy students more prosocial and generous. They become more likely to volunteer for a charity at school, more generous towards both rich and poor students in dictator games, and choose more equitable distributions of payoffs in the lab. Second, having poor classmates makes wealthy students discriminate less against poor children, measured by their teammate choice in an incentivized sports contest. Consistent with this, they become more willing to socialize with poor children outside school. Third, I find marginally significant negative effects on test scores in English, but no effect on Hindi or Math. Overall, I conclude that mixing in schools had substantial positive effects on the social behaviors of wealthy students, at the cost of negative but arguably modest impacts on academic achievement. To shed light on mechanisms, I exploit idiosyncratic assignment of students to study groups and find that the effects on social behaviors are largely driven by personal interactions between wealthy and poor students, rather than by changes in teacher behavior or curriculum.

Estimating Social Preferences and Gift Exchange at Work [New Version: June 2016]

(with Stefano DellaVigna, John List and Ulrike Malmendier)

Abstract: We design a model-based field experiment to estimate the nature and magnitude of workers' social  references towards their employers. We hire 446 workers for a one-time task. Within worker, we vary (i) piece rates; (ii) whether the work has payoffs only for the worker, or also for the employer; and (iii) the return to the employer. We then introduce a surprise increase or decrease in pay (`gifts') from the employer. We find that workers have substantial baseline social preferences towards their employers, even in the absence of repeated-game incentives. Consistent with models of warm glow or social norms, but not of pure altruism, workers exert substantially more effort when their work is consequential to their employer, but are insensitive to the precise return to the employer. Turning to reciprocity, we find little evidence of a response to unexpected positive (or negative) gifts from the employer. Our structural estimates of the social preferences suggest that, if anything, positive reciprocity in response to monetary `gifts' may be larger than negative reciprocity. We revisit the results of previous field experiments on gift exchange using our model and derive a one-parameter expression for the implied reciprocity in these experiments.

[AEA Pre-Registration] Note: This includes a full pre-registration of the structural model.