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What Happened to U.S. Business Dynamism?
The U.S. economy has witnessed a number of striking trends that indicate a rising market concentration and a slowdown in business dynamism in recent decades. We attempt to understand potential common forces behind these empirical regularities through the lens of a micro-founded general equilibrium model of endogenous firm dynamics.
Innovation, Trade Policy, and Globalization
This note examines the optimal mix of tariff policies and R&D subsidies to support domestic firms in global technological competition and to enhance aggregate welfare.
Innovation and Trade Policy in a Globalized World
How do import tariffs and R&D subsidies help domestic firms compete globally? How do these policies affect aggregate growth and economic welfare? To answer these questions, we build a dynamic general equilibrium growth model where firm innovation endogenously determines the dynamics of technology, market leadership, and trade flows, in a world with two large open economies at different stages of development. Firms? R&D decisions are driven by (i) the defensive innovation motive, (ii) the expansionary innovation motive, and (iii) technology spillovers. The theoretical investigation illustrates ...
Fewer but Better : Sudden Stops, Firm Entry, and Financial Selection
We incorporate endogenous technical change into a real business cycle small open economy framework to study the productivity costs of sudden stops. In this economy, productivity growth is determined by the entry of new firms and the expansion decisions of incumbent firms. New firms are created after the implementation of business ideas, yet the quality of ideas is heterogeneous and good ideas are scarce. Selection of the most promising ideas gives rise to a trade-off between mass (quantity) and composition (quality) in the entrant cohort. Chilean plant-level data from the sudden stop ...