TY - JOUR AU - Matsuyama, Kiminori TI - Aggregate Implications of Credit Market Imperfections JF - National Bureau of Economic Research Working Paper Series VL - No. 13209 PY - 2007 Y2 - July 2007 DO - 10.3386/w13209 UR - http://www.nber.org/papers/w13209 L1 - http://www.nber.org/papers/w13209.pdf N1 - Author contact info: Kiminori Matsuyama Department of Economics Northwestern University 2211 Campus Drive Evanston, IL 60208 Tel: 847/491-8490 E-Mail: k-matsuyama@northwestern.edu M1 - published as Kiminori Matsuyama. "Aggregate Implications of Credit Market Imperfections," in Daron Acemoglu, Kenneth Rogoff and Michael Woodford, editors, "NBER Macroeconomics Annual 2007, Volume 22" University of Chicago Press (2008) M3 - presented at "22nd Annual Conference on Macroeconomics", March 30-31, 2007 AB - Credit market imperfections provide the key to understanding many important issues in business cycles, growth and development, and international economics. Recent progress in these areas, however, has left in its wake a bewildering array of individual models with seemingly conflicting results. This paper offers a road map. Using the same single model of credit market imperfections throughout, it brings together a diverse set of results within a unified framework. In so doing, it aims to draw a coherent picture so that one is able to see some close connections between these results, thereby showing how a wide range of aggregate phenomena may be attributed to the common cause. They include, among other things, endogenous investment-specific technical changes, development traps, leapfrogging, persistent recessions, recurring boom-and-bust cycles, reverse international capital flows, the rise and fall of inequality across nations, and the patterns of international trade. The framework is also used to investigate some equilibrium and distributional impacts of improving the efficiency of credit markets. One recurring finding is that the properties of equilibrium often respond non-monotonically to parameter changes, which suggests some cautions for studying aggregate implications of credit market imperfections within a narrow class or a particular family of models. ER -