Information spillovers between firms can reduce R&D incentives if competitors can free ride on innovations. However, strong property rights may impede cumulative research and lead to inefficient duplication. These effects are particularly relevant in natural resource exploration, where...

Market definition is essential for antitrust analysis, but challenging in settings with network effects, where substitution patterns depend on changes in network size. To address this challenge, we conduct an incentivized experiment to measure substitution patterns for TikTok, a popular social...

Making innovative drugs affordable and accessible is a pressing global challenge. Centralized negotiation is an increasingly popular policy solution, but it remains understudied despite wide variation in implementation. This paper studies China's ongoing NRDL Reform, which combines centralized...

We study voting in general elections for the U.S. House of Representatives. Our data set includes demographics and turnout of all registered voters for the years 2016-2020, as well as vote shares at the precinct and contest level. We estimate a Downsian voting model incorporating rich observed...

Exams are designed to rank students objectively by their abilities, including elements such as time limits, the number and difficulty of questions, and negative marking policies. Using data from a lab-in-field experiment, we develop and estimate a model of student behavior in multiple-choice...

This paper shows that product design shapes search frictions and that intermediaries leverage this channel to increase their rents in the context of the U.S. municipal bond market. The majority of bonds are designed via negotiations between a local government and its underwriter. They are then...

The standard Berry, Levinsohn, and Pakes (1995) (BLP) approach to estimation of demand and supply parameters assumes that the product characteristic observed by consumers and producers but not the researcher is conditionally mean independent of observed characteristics. We extend BLP to allow...

We introduce a new methodology for estimating multi-product production functions. It embeds the seminal contributions of Diewert (1973) and Lau (1976) in our extended version of the semi-parametric econometric framework of Olley and Pakes (1996), where we address the simultaneity of inputs and...

Access to electricity is a crucial determinant of quality of life and productivity. The United States has a highly reliable electricity grid but it faces new resilience challenges posed by more intense natural disasters and rising state level green power requirements. Using a U.S electric...