- Ethnolinguistic Diversity: Origins and Implications (job market paper)
- The Climatic Origins of the Neolithic Revolution: A Theory of Long-Run Development via Climate-Induced Technological Progress (joint with Quamrul Ashraf)
- The Evolution of Enterpreneurial Spirit and the Process of Development (joint with Oded Galor)
Research in Progress
- A Theory of Financial and Technological Innovation: Implications for Growth abstract (joint with Ross Levine)
