Creator: Chiu, Jonathan, Meh, Cesaire, and Wright, Randall D. Series: Working paper (Federal Reserve Bank of Minneapolis. Research Department) Number: 688 Abstract:
The generation and implementation of ideas, or knowledge, is crucial for economic performance. We study this process in a model of endogenous growth with frictions. Productivity increases with knowledge, which advances via innovation, and with the exchange of ideas from those who generate them to those best able to implement them (technology transfer). But frictions in this market, including search, bargaining, and commitment problems, impede exchange and thus slow growth. We characterize optimal policies to subsidize research and trade in ideas, given both knowledge and search externalities. We discuss the roles of liquidity and financial institutions, and show two ways in which intermediation can enhance efficiency and innovation. First, intermediation allows us to finance more transactions with fewer assets. Second, it ameliorates certain bargaining problems, by allowing entrepreneurs to undo otherwise sunk investments in liquidity. We also discuss some evidence, suggesting that technology transfer is a significant source of innovation and showing how it is affected by credit considerations.
Keyword: Financial frictions, Technology transfer, Innovation, and Growth Subject (JEL): G10 - General Financial Markets: General (includes Measurement and Data) and D83 - Search; Learning; Information and Knowledge; Communication; Belief; Unawareness
Creator: Chari, V. V., Kehoe, Patrick J., and McGrattan, Ellen R. Series: Working paper (Federal Reserve Bank of Minneapolis. Research Department) Number: 625 Abstract:
This paper proposes a simple method for guiding researchers in developing quantitative models of economic fluctuations. We show that a large class of models, including models with various frictions, are equivalent to a prototype growth model with time-varying wedges that, at least at face value, look like time-varying productivity, labor taxes, and capital income taxes. We label the time-varying wedges as efficiency wedges, labor wedges, and investment wedges. We use data to measure these wedges and then feed them back into the prototype growth model. We then assess the fraction of fluctuations accounted for by these wedges during the great depressions of the 1930s in the United States, Germany, and Canada. We find that the efficiency and labor wedges in combination account for essentially all of the declines and subsequent recoveries. Investment wedges play, at best, a minor role.
Keyword: Financial frictions, Great Depression, Sticky wages, Productivity decline, Equivalence theorems, and Capacity utilization Subject (JEL): E12 - General Aggregative Models: Keynes; Keynesian; Post-Keynesian and E10 - General Aggregative Models: General
Creator: Kehoe, Patrick J., Midrigan, Virgiliu, and Pastorino, Elena Series: Staff report (Federal Reserve Bank of Minneapolis. Research Department) Number: 566 Abstract:
Modern business cycle theory focuses on the study of dynamic stochastic general equilibrium models that generate aggregate fluctuations similar to those experienced by actual economies. We discuss how this theory has evolved from its roots in the early real business cycle models of the late 1970s through the turmoil of the Great Recession four decades later. We document the strikingly different pattern of comovements of macro aggregates during the Great Recession compared to other postwar recessions, especially the 1982 recession. We then show how two versions of the latest generation of real business cycle models can account, respectively, for the aggregate and the cross-regional fluctuations observed in the Great Recession in the United States.
Keyword: New Keynesian models, Financial frictions, and External validation Subject (JEL): E52 - Monetary Policy, E32 - Business Fluctuations; Cycles, E13 - General Aggregative Models: Neoclassical, and E61 - Policy Objectives; Policy Designs and Consistency; Policy Coordination
Creator: Chari, V. V., Kehoe, Patrick J., and McGrattan, Ellen R. Series: Staff report (Federal Reserve Bank of Minneapolis. Research Department) Number: 328 Abstract:
We propose a simple method to help researchers develop quantitative models of economic fluctuations. The method rests on the insight that many models are equivalent to a prototype growth model with time-varying wedges which resemble productivity, labor and investment taxes, and government consumption. Wedges corresponding to these variables—efficiency, labor, investment, and government consumption wedges—are measured and then fed back into the model in order to assess the fraction of various fluctuations they account for. Applying this method to U.S. data for the Great Depression and the 1982 recession reveals that the efficiency and labor wedges together account for essentially all of the fluctuations; the investment wedge plays a decidedly tertiary role, and the government consumption wedge, none. Analyses of the entire postwar period and alternative model specifications support these results. Models with frictions manifested primarily as investment wedges are thus not promising for the study of business cycles. (See Additional Material for a response to Christiano and Davis (2006).)
Keyword: Capacity utilization, Sticky prices, Sticky wages, Equivalence theorems, Productivity decline, Financial frictions, and Great Depression Subject (JEL): E12 - General Aggregative Models: Keynes; Keynesian; Post-Keynesian and E10 - General Aggregative Models: General