Publications by year

Who Becomes an Inventor in America? The Importance of Exposure to Innovation
Bell, Alex, Raj Chetty, Xavier Jaravel, Neviana Petkova, and John Van Reenen. 2019. “Who Becomes an Inventor in America? The Importance of Exposure to Innovation.” Quarterly Journal of Economics 134 (2): 647–713. Abstract
We characterize the factors that determine who becomes an inventor in the United States, focusing on the role of inventive ability (“nature”) versus environment (“nurture”). Using deidentified data on 1.2 million inventors from patent records linked to tax records, we first show that children’s chances of becoming inventors vary sharply with characteristics at birth, such as their race, gender, and parents’ socioeconomic class. For example, children from high-income (top 1%) families are 10 times as likely to become inventors as those from below-median income families. These gaps persist even among children with similar math test scores in early childhood—which are highly predictive of innovation rates—suggesting that the gaps may be driven by differences in environment rather than abilities to innovate. We directly establish the importance of environment by showing that exposure to innovation during childhood has significant causal effects on children’s propensities to invent. Children whose families move to a high-innovation area when they are young are more likely to become inventors. These exposure effects are technology class and gender specific. Children who grow up in a neighborhood or family with a high innovation rate in a specific technology class are more likely to patent in exactly the same class. Girls are more likely to invent in a particular class if they grow up in an area with more women (but not men) who invent in that class. These gender- and technology class–specific exposure effects are more likely to be driven by narrow mechanisms, such as role-model or network effects, than factors that only affect general human capital accumulation, such as the quality of schools. Consistent with the importance of exposure effects in career selection, women and disadvantaged youth are as underrepresented among high-impact inventors as they are among inventors as a whole. These findings suggest that there are many “lost Einsteins”—individuals who would have had highly impactful inventions had they been exposed to innovation in childhood—especially among women, minorities, and children from low-income families.
Do Tax Cuts Produce more Einsteins? The Impacts of Financial Incentives Versus Exposure to Innovation on the Supply of Inventors
Bell, Alex, Raj Chetty, Xavier Jaravel, Neviana Petkova, and John Van Reenen. 2019. “Do Tax Cuts Produce more Einsteins? The Impacts of Financial Incentives Versus Exposure to Innovation on the Supply of Inventors.” Journal of the European Economic Association 17 (3): 651–677. Abstract
Many countries provide financial incentives to spur innovation, ranging from tax incentives to research and development grants. In this paper, we study how such financial incentives affect individuals’ decisions to pursue careers in innovation. We first present empirical evidence on inventors’ career trajectories and income distributions using deidentified data on 1.2 million inventors from patent records linked to tax records in the United States. We find that the private returns to innovation are extremely skewed—with the top 1% of inventors collecting more than 22% of total inventors’ income—and are highly correlated with their social impact, as measured by citations. Inventors tend to have their most impactful innovations around age 40 and their incomes rise rapidly just before they have high-impact patents. We then build a stylized model of inventor career choice that matches these facts as well as recent evidence that childhood exposure to innovation plays a critical role in determining whether individuals become inventors. The model predicts that financial incentives, such as top income tax reductions, have limited potential to increase aggregate innovation because they only affect individuals who are exposed to innovation and have essentially no impact on the decisions of star inventors, who matter most for aggregate innovation. Importantly, these results hold regardless of whether the private returns to innovation are fully known at the time of career choice or are fully stochastic. In contrast, increasing exposure to innovation (e.g., through mentorship programs) could have substantial impacts on innovation by drawing individuals who produce high-impact inventions into the innovation pipeline. Although we do not present direct evidence supporting these model-based predictions, our results call for a more careful assessment of the impacts of financial incentives and a greater focus on alternative policies to increase the supply of inventors.
Antitrust Enforcement as Federal Policy to Reduce Regional Economic Disparities
Manduca, Robert. 2019. “Antitrust Enforcement as Federal Policy to Reduce Regional Economic Disparities.” The Annals of the American Academy of Political and Social Science 685 (1): 156-171. Abstract
Regions of the United States have seen their incomes diverge dramatically over the last four decades. This article makes the empirical and political case for treating regional economic disparities as a national phenomenon best resolved through federal policy, rather than exclusively as a matter of local responsibility. It then considers reinvigorated antitrust enforcement as an example of a federal policy that would strengthen local economies while benefiting from policy feedback effects.
The Cognitive Dimension of Household Labor
Daminger, Allison. 2019. “The Cognitive Dimension of Household Labor.” American Sociological Review 84 (4): 609-633. Abstract
Household labor is commonly defined as a set of physical tasks such as cooking, cleaning, and shopping. Sociologists sometimes reference non-physical activities related to “household management,” but these are typically mentioned in passing, imprecisely defined, or treated as equivalent to physical tasks. Using 70 in-depth interviews with members of 35 couples, this study argues that such tasks are better understood as examples of a unique dimension of housework: cognitive labor. The data demonstrate that cognitive labor entails anticipating needs, identifying options for filling them, making decisions, and monitoring progress. Because such work is taxing but often invisible to both cognitive laborers and their partners, it is a frequent source of conflict for couples. Cognitive labor is also a gendered phenomenon: women in this study do more cognitive labor overall and more of the anticipation and monitoring work in particular. However, male and female participation in decision-making, arguably the cognitive labor component most closely linked to power and influence, is roughly equal. These findings identify and define an overlooked—yet potentially consequential—source of gender inequality at the household level and suggest a new direction for research on the division of household labor.
The Long-Term Impact of DACA: Forging Futures Despite DACA's Uncertainty. Findings from the National UnDACAmented Research Project (NURP).
Gonzales, Roberto G., Sayil Camacho, Kristina Brant, and Carlos Aguilar. 2019. The Long-Term Impact of DACA: Forging Futures Despite DACA's Uncertainty. Findings from the National UnDACAmented Research Project (NURP). (Special Report 1). Immigration Initiative at Harvard. 1st ed. Harvard University, 1-45.
Unemployment insurance and reservation wages: Evidence from administrative data
Barbanchon, Thomas Le, Roland Rathelot, and Alexandra Roulet. 2019. “Unemployment insurance and reservation wages: Evidence from administrative data.” Journal of Public Economics 171: 1-17. Abstract

Although the reservation wage plays a central role in job search models, empirical evidence on the determinants of reservation wages, including key policy variables such as unemployment insurance (UI), is scarce. In France, unemployed people must declare their reservation wage to the Public Employment Service when they register to claim UI benefits. We take advantage of these rich French administrative data and of a reform of UI rules to estimate the effect of the Potential Benefit Duration (PBD) on reservation wages and on other dimensions of job selectivity, using a difference-in-difference strategy. We cannot reject that the elasticity of the reservation wage with respect to PBD is zero. Our results are precise and we can rule out elasticities larger than 0.006. Furthermore, we do not find any significant effects of PBD on the desired number of hours, duration of labor contract and commuting time/distance. The estimated elasticity of actual benefit duration with respect to PBD of 0.3 is in line with the consensus in the literature. Exploiting a Regression Discontinuity Design as an alternative identification strategy, we find similar results.

The Turnout Gap: Race, Ethnicity, and Political Inequality in Diversifying America
Améliorer les appariements sur le marché du travail, by Alexandra Roulet
Roulet, Alexandra. 2018. Améliorer les appariements sur le marché du travail. Les Presses de Sciences Po.
Randomistas: How Radical Researchers Are Changing Our World
Leigh, Andrew. 2018. Randomistas: How Radical Researchers Are Changing Our World. Yale University Press.
Navigation by Judgment: Why and When Top-down Management of Foreign Aid Doesn’t Work
Education in a New Society, edited by Jal Mehta and Scott Davies
Mehta, Jal, and Scott Davies, ed. 2018. Education in a New Society: Renewing the Sociology of Education. University of Chicago Press.
The Increasingly United States: How and Why American Political Behavior Nationalized
Politics at Work, by Alexander Hertel-Fernandez
Hertel-Fernandez, Alexander. 2018. Politics at Work: How Companies Turn Their Workers into Lobbyists. Oxford University Press.
Environmental Inequality: The Social Causes and Consequences of Lead Exposure
Muller, Christopher, Robert J. Sampson, and Alix S. Winter. 2018. “Environmental Inequality: The Social Causes and Consequences of Lead Exposure.” Annual Review of Sociology 44 (1): 263-282. Abstract
In this article, we review evidence from the social and medical sciences on the causes and effects of lead exposure. We argue that lead exposure is an important subject for sociological analysis because it is socially stratified and has important social consequences—consequences that themselves depend in part on children's social environments. We present a model of environmental inequality over the life course to guide an agenda for future research. We conclude with a call for deeper exchange between urban sociology, environmental sociology, and public health, and for more collaboration between scholars and local communities in the pursuit of independent science for the common good.
Introducing a performance-based component into Jakarta's school grants: What do we know about its impact after three years?
Samarrai, Samer Al, Unika Shrestha, Amer Hasan, Nozomi Nakajima, Santoso Santoso, and Wisnu Harto Adi Wijoyo. 2018. “Introducing a performance-based component into Jakarta's school grants: What do we know about its impact after three years?” Economics of Education Review 67: 110-136. Abstract
Using administrative data, this paper evaluates the early impact of introducing a performance-based component into Jakarta's long-standing school grant program on learning outcomes. The authors use difference-in-differences and regression discontinuity approaches to identify the component's impact on both government primary and junior secondary schools. Learning outcomes improved in primary schools at the bottom of the performance distribution, which narrowed the performance gaps between schools. However, the component had a negative impact on the better performing primary schools. Overall, primary examination scores fell slightly but this effect was only temporary. In contrast, the performance-based component improved examination scores in junior secondary schools. This impact seems to have been greatest among better-performing schools, thus widening the performance gap between these schools and those whose performance was worse. The data suggest that the main impact of the performance-based grant in terms of learning outcomes operated through an increase in competition among schools to earn the performance-based grant rather than through receipt of the actual grant funds.
Beyond the Border and Into the Heartland: Spatial Patterning of U.S. Immigration Detention
The expansion of U.S. immigration enforcement from the borders into the interior of the country and the fivefold increase in immigration detentions and deportations since 1995 raise important questions about how the enforcement of immigration law is spatially patterned across American communities. Focusing on the practice of immigration detention, the present study analyzes the records of all 717,160 noncitizens detained by Immigration and Customs Enforcement (ICE) in 2008 and 2009—a period when interior enforcement was at its peak—to estimate states’ detention rates and examine geographic variation in detention outcomes, net of individual characteristics. Findings reveal substantial state heterogeneity in immigration detention rates, which range from approximately 350 detentions per 100,000 noncitizens in Connecticut to more than 6,700 detentions per 100,000 noncitizens in Wyoming. After detainment, individuals’ detention outcomes are geographically stratified, especially for detainees eligible for pretrial release. These disparities indicate the important role that geography plays in shaping individuals’ chances of experiencing immigration detention and deportation.
Attitudes Toward Mass Arrivals: Variations by Racial, Spatial, and Temporal Distances to Incoming Disaster Evacuees
Raker, Ethan J., and James R. Elliott. 2018. “Attitudes Toward Mass Arrivals: Variations by Racial, Spatial, and Temporal Distances to Incoming Disaster Evacuees.” Social Science Quarterly 99 (3): 1200-1213. Abstract


Disasters can send large numbers of evacuees into new contexts of reception, where attitudes toward them can vary significantly by perceived social distance. To conventional assessment of such distance along racial lines, we add spatial and temporal distance from point of central arrival.


A novel research design combines the natural experiment triggered by Hurricane Katrina with five consecutive Kinder Houston Area Surveys (2006–2010), which gather data on attitudes toward arrived evacuees as well as tract‐level data on residential context.


Regression analyses reveal that spatial and temporal distance act similarly to racial distance in predicting negative attitudes toward evacuees. Results also show these effects are moderated by the racial context of incumbents’ residential neighborhoods.


Social distance exerts a multifaceted influence on evacuee reception in ways that become especially pertinent in the arrival of communities from large‐scale, urban evacuations.

Does ‘right to work’ imperil the right to health? The effect of labour unions on workplace fatalities
Zoorob, Michael. 2018. “Does ‘right to work’ imperil the right to health? The effect of labour unions on workplace fatalities.” Occupational and Environmental Medicine 75: 736-738. Abstract

Objective Economic policies can have unintended consequences on population health. In recent years, many states in the USA have passed ‘right to work’ (RTW) laws which weaken labour unions. The effect of these laws on occupational health remains unexplored. This study fills this gap by analysing the effect of RTW on occupational fatalities through its effect on unionisation.

Methods Two-way fixed effects regression models are used to estimate the effect of unionisation on occupational mortality per 100 000 workers, controlling for state policy liberalism and workforce composition over the period 1992–2016. In the final specification, RTW laws are used as an instrument for unionisation to recover causal effects.

Results The Local Average Treatment Effect of a 1% decline in unionisation attributable to RTW is about a 5% increase in the rate of occupational fatalities. In total, RTW laws have led to a 14.2% increase in occupational mortality through decreased unionisation.

Conclusion These findings illustrate and quantify the protective effect of unions on workers’ safety. Policymakers should consider the potentially deleterious effects of anti-union legislation on occupational health.

The Persistent Effect of U.S. Civil Rights Protests on Political Attitudes
Mazumder, Soumyajit. 2018. “The Persistent Effect of U.S. Civil Rights Protests on Political Attitudes.” American Journal of Political Science 62 (4): 922-935. Publisher's Version Abstract
Protests can engender significant institutional change. Can protests also continue to shape a nation's contemporary politics outside of more formalized channels? I argue that social movements can not only beget institutional change, but also long‐run, attitudinal change. Using the case of the U.S. civil rights movement, I develop a theory in which protests can shift attitudes and these attitudes can persist. Data from over 150,000 survey respondents provide evidence consistent with the theory. Whites from counties that experienced historical civil rights protests are more likely to identify as Democrats and support affirmative action, and less likely to harbor racial resentment against blacks. These individual‐level results are politically meaningful—counties that experienced civil rights protests are associated with greater Democratic Party vote shares even today. This study highlights how social movements can have persistent impacts on a nation's politics.
Political Consequences of Survival Strategies among the Urban Poor
Desmond, Matthew, and Adam Travis. 2018. “Political Consequences of Survival Strategies among the Urban Poor.” American Sociological Review 83 (5): 869–896. Abstract
Combining ethnographic and statistical methods, this study identifies interlocking mechanisms that help explain how disadvantaged neighborhoods influence their residents’ political capacity. Support systems that arise in low-income neighborhoods promote social interaction that helps people make ends meet, but these systems also expose residents to heavy doses of adversity, which dampens perceptions of collective political capacity. For the poorest residents of these neighborhoods in particular, the expected positive effect of informal social support is suppressed by the negative effect of perceived trauma. These findings present a micro-level account of poverty, social interaction, and political capacity, one that holds implications for scholarship and public policy on participatory inequality.