Access to useful knowledge is crucial for fostering modern economic growth. We show, for the first time, that knowledge …

Following Garicano (2000), we consider groups whose members decide what knowledge to acquire and how to use this … knowledge in production. If efficient production requires common knowledge, all group members should become workers and acquire … common knowledge. But if efficient production requires diverse knowledge, one group member should become manager, acquire …

in knowledge spillovers. Drawing on the NBER Patent Citations Database, we examine patent citations data at metropolitan … of cited patent, which implies that new knowledge faces the largest barriers to diffusion. However, over time, border and … sources of overestimated aggregate border effects of knowledge spillovers. While self-citations are only 11% of total …