On the Link Between Cycles and Growth Min Ouyang.
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Transcript of On the Link Between Cycles and Growth Min Ouyang.
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On the Link Between Cycles and Growth
Min Ouyang
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Macro-economic Research
• Macro only: the balance of macro variables at the aggregate level only.– GDP, Aggregate Investment, Aggregate
Consumption; Interest Rate…
• Macro with a micro foundation:– Aggregate– Industry– Individual, firms
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An Example: Unemployment
• Macro-only macro:– interest rate and unemployment?
• Macro with a micro foundation:– Job search;– Contracting theory;– Innovation and industry structural change;– Labor-market institutions: minimum-wage law;
unemployment insurance; health insurance.
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Macro is Everything!
• Anything interesting is related to macroeconomic thinking and contributes to macroeconomic outcome.
• Macro outcome is the aggregation of individual and firm behaviors.
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Current Recession
• Cannot be explained by macro-only macro-economic thinking.
• The collapse of the financial market:– Asymmetric information between lenders and
borrowers;– Re-sale of “lemon” investment packages.
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I am…
• A micro-foundation Macroeconomist.– Labor economics;– Industry organization.
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My Current Research
• The link between long-run growth and short-run cycles.– Growth economists investigate long-run growth rates
and innovation. They ignore short-run cycles.– Business-cycle economists take long-run growth as
given and examine short-run fluctuations around the growth trend.
– However, the two can be an unified phenomenon. And the causality can go both ways.
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Cycles and Growth
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From Cycles to Growth
• Growth is driven by activities such as:– Innovation: new technology; new products;– Re-organization;– Reallocation.
• Cycles impact growth through their influence on growth activities:– The cyclicality of innovation;– And the growth consequence of such
cyclicality.
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The Cyclicality of R&D
• R&D expenditure provides a measure for innovation input.
• The cyclicality of R&D reflects how short-run cycles influence innovation inputs.
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The opportunity-cost View
• Schumpeter (1939)– Firms produce and innovate:– Resource is limited:– When you innovate more, you’ve got to
produce less.– Thus, firms innovate more during recessions
when the return to production is low.
• Reallocation is indeed counter-cyclical. School enrollment is also counter-cyclical.
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Aggregate R&D is Pro-cyclical
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?
• Does aggregate data really reflect the timing of R&D at the firm level?
• We need micro data, ideally, firm-level data;
• I take a compromise, looking at industry-level data.
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An Industry Panel of R&D and Output
• Output by industry: the NBER Manufacturing Productivity Database (1958-2002); output is measured as real value added.
• R&D by industry from the NSF (1958-1998); R&D is deflated by GDP deflator.
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Decomposition
N industries, indexed by i
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Decomposition of Variances and Co-variance
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Pro-cyclical Aggregate R&D
• Dominated by co-movement of R&D and output across different industries.
• The co-movement between R&D and output within industry differs significantly by industry.
• The OC theory should be examined at the micro-level.
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The Cyclicality of Industry R&D
Two elements:1. Financial-Market Frictions/Liquidity
constraints;
2. Cyclical Persistence.
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Financial-Market Frictions
• Basic Story:– Firms’ ability to finance R&D weakens during
recessions, so that their R&D lowers even if firms desire to raise R&D.
• Data:– Combining my R&D panel with data on
financial indicators from the Quarterly Financial Reports by the Census of Bureau.
– 16-industry panel: R&D, output, and Finance.
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Financial-Market Frictions
• Contributes to the cross-industry differences in R&D’s Cyclicality.
• Provides an explanation for Petroleum Refining R&D’s being counter-cyclical.
• But cannot explain all.