We review new theories of learning that posit specific, distinct roles for the learner or
innovator and their intellectual environment. We consider applications to the dynamics of …

We provide a tractable, quantitatively‐oriented theory of innovation and technology diffusion
to explore the role of international trade in the process of development. We model innovation …

We analyze a model economy with many agents, each with a different productivity level.
Agents divide their time between two activities: producing goods with the production-related …

We study the effect of place-based industrial policy on economic development, focusing on
the establishment of Special Economic Zones (SEZ) in China. We use data from a panel of …

Top income inequality rose sharply in the United States over the last 40 years but increased
only slightly in France and Japan. Why? We explore a model in which heterogeneous …

In the centuries leading up to the Industrial Revolution, Western Europe gradually pulled
ahead of other world regions in terms of technological creativity, population growth, and …

Despite a growing literature, the relationship between financing constraints (FC), intellectual
property rights (IPR) protection and firm innovation remains unclear within the transitional …

This article develops an idea flows theory of trade and growth with heterogeneous firms.
Entrants learn from incumbent firms, and the diffusion technology is such that learning …

An endogenous growth model is developed where each period firms invest in researching
and developing new ideas. An idea increases a firm's productivity. By how much depends …

We study how endogenous innovation and technology diffusion interact to determine the
shape of the productivity distribution and generate aggregate growth. We model firms that …