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Valuing Environmental Changes in the Presence of Risk: A Review and Discussion of Some Empirical Issues

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  • W Shaw
  • Mary Riddell
  • Paul Jakus

    (Department of Economics, Utah State University)

Abstract

The theory of ex-ante welfare measures is well establlished and has been addressed extensively in papers relating to the valuation of environmental resources when environmental variables have a random component. However, there have been many new developments in incorporating risks and uncertainty into economic models, and perhaps more importantly, there seems to be remaining confusion as to how to empirically implement such models. To date, a variety of estimation techniques have been utilized, with varying degrees of success in deriving an ex-ante welfare measure under risk. This manuscript assesses the state of the art by discussing the sources of risk, uncertainty, and error in utility models that incorporate risk. We are most interested in how to incorporate these ideas into empirical models and we examine how econometric estimation methods can best be used to obtain ex-ante welfare measures. We also present the current thinking on endogenous versus exogenous risks as well as subjective versus “expert” risk measures, and discuss some of the advantages and disadvantages likely to be encountered when using subjective-based risk estimates in empirical applications based on alternatives to the expected utility models.

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File URL: ftp://repec.bus.usu.edu/RePEc/usu/pdf/ERI2005-02.pdf
File Function: First version, 2005
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Bibliographic Info

Paper provided by Utah State University, Department of Economics in its series Working Papers with number 2005-02.

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Date of creation: Feb 2005
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Handle: RePEc:usu:wpaper:2005-02

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