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Federal Reserve Bank of San Francisco
Working Paper Series
Consumption-habits in a new Keynesian business cycle model
Richard Dennis
Abstract

Consumption-habits have become an integral component in new Keynesian models. However, consumption-habits can be modeled in a host of different ways and this diversity is reflected in the literature. I examine whether different approaches to modeling consumption habits have important implications for business cycle behavior. Using a standard new Keynesian business cycle model, I show that, to a first-order log-approximation, the consumption Euler equation associated with the additive functional form for habit formation encompasses the multiplicative function form. Empirically, I show that whether consumption habits are internal or external has little effect on the model's business cycle characteristics.


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Richard Dennis, Consumption-habits in a new Keynesian business cycle model, Federal Reserve Bank of San Francisco, Working Paper Series 2008-35, 2008.
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Keywords: Business cycles
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