What if the NIH had been 40% smaller? With Pierre Azoulay, Danielle Li, and Bhaven Sampat. Science (2025). [Pre-print]
The Returns to Science in the Presence of Technological Risk. arXiv:2312.14289. (2023). (Originally an internal report for Open Philanthropy)
The Roots of Agricultural Innovation: Patent Evidence of Knowledge Spillovers. With Paul Heisey, GianCarlo Moschini, and Yongjie Ji. Chapter in The Economics of Research and Innovation in Agriculture, NBER, editor Petra Moser (2021). [Pre-print]
Incentivizing New Veterinary Pharmaceutical Products to Combat Antibiotic Resistance. With Stacy Sneeringer. Applied Economic Perspectives and Policy (2020). [Pre-print]
The U.S. and EU Animal Pharmaceutical Industries in the Age of Antibiotic Resistance. With Stacy Sneeringer and Maria Bowman. USDA Economic Research Report 264 (2019).
Inventing by Combining Pre-Existing Technologies: Patent Evidence on Learning and Fishing Out. Research Policy (2017) [Pre-print] [Video Summary]
Combinations of technology in US Patents, 1926-2009: A Weakening Base for Future Innovation? Economics of Innovation and New Technology (2017). [Pre-print] [Video Summary]
Mandates and the Incentive for Environmental Innovation. With GianCarlo Moschini. Forthcoming in the American Journal of Agricultural Economics. [Pre-print] [simulation code]
Intellectual Property Rights and the Ascent of Proprietary Innovation in Agriculture. With GianCarlo Moschini. Annual Review of Resource Economics (2017) 9, 53-74. [Pre-print]
Research, Productivity, and Output Growth in U.S. Agriculture. With Keith Fuglie, Paul Heisey, and James MacDonald. Journal of Agricultural and Applied Economics (2017), 1-41.
Private Sector Research and Development. With Keith Fuglie, and Paul W. Heisey. Chapter in Handbook of Agriscience and Agribusiness, ed. N. Kalaitzandonakes (2017).
Incentives for Innovation: Patents, Prizes, and Research Contracts. With GianCarlo Moschini. Applied Economic Perspectives and Policy (2013). *winner of the 2013 Outstanding AEPP article.