Who Gets Ahead? Comparative Evidence on Intragenerational Mobility from Administrative Microdata We use administrative records from Austria, Belgium, Estonia and Spain to study income dynamics of working-age individuals over five years. Aggregate mobility indices often mask substantial variation in short-term income trajectories for individuals at different points of the distribution. By combining relative and absolute […]

The Effects of Affirmative Action on Targeted and Non-Targeted Students: Evidence from Low-Income Priorities in Paris High Schools » Gabrielle Fack (Université Paris Dauphine-PSL), Julien Grenet (Paris School of Economics), YingHua He (Rice University) Since 2008, school choice in Paris has an income-based affirmative action component giving low-income students preferential treatment in high school admissions. […]

Measuring Differences of Opinion: Axiomatic Foundation, Utility, and Truthtelling Understanding how individuals and groups differ in their opinions and preferences is central to analyzing disagreement, measuring polarization, designing institutions, and predicting collective outcomes. Yet comparing preferences requires more than observing how each person ranks alternatives--it requires a method for comparing preference orderings themselves. This paper […]

Seller-Side Tying of Platform Services, joint with Kinshuk Jerath and Greg Taylor This paper analyzes the practice of seller-side tying in digital platforms, where access to a core intermediation service is conditioned on the seller using ancillary services such as fulfillment or payment processing. We develop a model in which a monopoly platform intermediates transactions […]

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Empowering Parents in the Digital Age While economic research documents substantial negative effects of social media on youth outcomes, the role of parents in mediating these effects remains largely unexplored. We propose digital parenting as a new form of human capital investment and test whether interventions can shift parents' beliefs and practices, as well as […]

Title: Efficiency in DeFi Lending: Interest Rate Mechanisms and Liquid Staking Abstract: Liquid staking, a notable recent innovation in decentralized finance (DeFi) allows to delegate and redeploy capital which was traditionally locked and has thus been promoted for its “capital efficiency” virtues. In the context of DeFi lending, we build a tractable general equilibrium model […]

Optimal Taxation of Undistributed Profits (with Etienne Lehmann) We study the optimal combination of corporate and dividend taxes when retained earnings can be used to avoid taxation. We show that eliminating dividend taxes while raising the corporate income tax can increase total revenue without affecting investment. Our simulations indicate revenue gains of 0.1–0.5\% of GDP. […]

Family Planning and Ethnic Heritage: Evidence from Sub-Saharan Africa (with Arcangelo Dimico and Chiara Falco) Using ethnographic, ecological, and folklore data for sub-Saharan Africa, we investigate the role played by postpartum sexual abstinence, an extensively documented practice that in preindustrial societies finds its biological justification as a means to safeguard child survival. We show that […]

Redistributive Labor Income Taxation with Directed Technical Change in a Unionized Economy What are the implications of endogenous directed technical change for the design of redistributive income taxes in a unionized economy ? I study this within a general equilibrium framework featuring two types of labor that supply labor along the extensive margin. Wages are […]

Acquiring Patents in Secret: Disclosure Timing in Markets for Technology Markets for technology provide a vibrant channel through which firms purchase ownership rights to patented inventions. Although such transactions enable firms to secure access to intangible assets originating beyond their borders, they also provide cues to competitors regarding the purchasing firm’s technological investments. This study […]