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Intertemporal Utility and Correlation Aversion

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Author Info

  • Steffen Andersen

    ()
    (Copenhagen Business School)

  • Glenn W. Harrison

    ()
    (Robinson College of Business, Georgia State University)

  • Morten Lau

    ()
    (Durham Business School)

  • Elisabet E. Rutstroem

    ()
    (Robinson College of Business, Georgia State University)

Abstract

Convenient assumptions about qualitative properties of the intertemporal utility function have generated counter-intuitive implications for the relationship between atemporal risk aversion and the intertemporal elasticity of substitution. If the intertemporal utility function is additively separable then the latter two concepts are the inverse of each other. We review a simple theoretical specification with a long lineage in the literature on multi-attribute utility, and demonstrate the critical role of a concept known as intertemporal risk aversion or intertemporal correlation aversion. This concept is the intertemporal analogue of a more general concept applied to two attributes of utility, but where the attributes just happen to be the time-dating of the good. In the context of intertemporal utility functions, the concept provides an intuitive explanation of possible differences between (the inverse of) atemporal risk aversion and the intertemporal elasticity of substitution. We use this theoretical structure to guide the design of a series of experiments that allow us to identify and estimate intertemporal correlation aversion. Our results show that subjects are correlation averse over lotteries with intertemporal income profiles, and that the convenient additive specification of the intertemporal utility function is not an appropriate representation of preferences over time.

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Bibliographic Info

Paper provided by Durham University Business School in its series Working Papers with number 2011_03.

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Date of creation: 01 Mar 2011
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Handle: RePEc:dur:durham:2011_03

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Postal: Durham University Business School, Mill Hill Lane, Durham DH1 3LB, England
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Cited by:
  1. Diego Ubfal, 2013. "How General Are Time Preferences? Eliciting Good-Specific Discount Rates," Working Papers 473, IGIER (Innocenzo Gasparini Institute for Economic Research), Bocconi University.
  2. Antoine Bommier, 2011. "Life-Cycle Preferences Revisited," CER-ETH Economics working paper series 11/155, CER-ETH - Center of Economic Research (CER-ETH) at ETH Zurich.
  3. Steffen Andersen & James C. Cox & Glenn W. Harrison & Morten Lau & Elisabet E. Rutstroem & Vjollca Sadiraj, 2011. "Asset Integration and Attitudes to Risk: Theory and Evidence," Working Papers 2011_10, Durham University Business School.
  4. Drichoutis, Andreas & Nayga, Rodolfo, 2012. "Do risk and time preferences have biological roots?," MPRA Paper 37320, University Library of Munich, Germany.
  5. Georges Dionne & Jingyuan Li & Cedric Okou, 2012. "An Extension of the Consumption-based CAPM Model," Cahiers de recherche 1214, CIRPEE.
  6. Drichoutis, Andreas & Nayga, Rodolfo, 2013. "A reconciliation of time preference elicitation methods," MPRA Paper 46916, University Library of Munich, Germany, revised 12 May 2013.
  7. Cheung, Stephen L., 2012. "Risk Preferences Are Not Time Preferences: Comment," IZA Discussion Papers 6762, Institute for the Study of Labor (IZA).

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