Deep Habits

42 Pages Posted: 31 Jan 2004

See all articles by Morten O. Ravn

Morten O. Ravn

European University Institute - Economics Department (ECO); London Business School - Department of Economics; University of Southampton; Centre for Economic Policy Research (CEPR); National Bureau of Economic Research (NBER)

Stephanie Schmitt-Grohé

Centre for Economic Policy Research (CEPR); National Bureau of Economic Research (NBER)

Martín Uribe

Columbia University - Graduate School of Arts and Sciences - Department of Economics; National Bureau of Economic Research (NBER)

Multiple version iconThere are 2 versions of this paper

Date Written: January 2004

Abstract

This paper generalizes the standard habit formation model to an environment in which agents form habits over individual varieties of goods as opposed to over a composite consumption good. We refer to this preference specification as 'deep habit formation'. Under deep habits, the demand function faced by individual producers depends on past sales. This feature is typically assumed ad-hoc in customer market and brand switching cost models. A central result of the paper is that deep habits give rise to countercyclical markups, which is in line with the empirical evidence. This result is important because ad-hoc formulations of customer-market and switching-cost models have been criticized for implying procyclical and hence counterfactual markup movements. The paper also provides econometric estimates of the parameters pertaining to the deep habit model.

JEL Classification: D10, D12, D42, E30

Suggested Citation

Ravn, Morten O. and Schmitt-Grohe, Stephanie and Uribe, Martin, Deep Habits (January 2004). Available at SSRN: https://ssrn.com/abstract=495766

Morten O. Ravn

European University Institute - Economics Department (ECO) ( email )

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Stephanie Schmitt-Grohe (Contact Author)

Centre for Economic Policy Research (CEPR) ( email )

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Martin Uribe

Columbia University - Graduate School of Arts and Sciences - Department of Economics ( email )

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