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A META-ANALYSIS OF HYPOTHETICAL BIAS IN STATED PREFERENCE VALUATION AgEcon
Murphy, James J.; Allen, P. Geoffrey; Stevens, Thomas H.; Weatherhead, Darryl.
Individuals are widely believed to overstate their economic valuation of a good by a factor of two or three. This paper reports the results of a meta-analysis of hypothetical bias in 28 stated preference valuation studies that report monetary willingness-to-pay and that used the same mechanism for eliciting both hypothetical and actual values. The papers generated 83 observations with a median value of the ratio of hypothetical to actual value of 1.35, and the distribution has severe positive skewness. Since a comprehensive theory of hypothetical bias has not been developed, we use a set of explanatory variables based on issues that have been investigated in previous research. We find that a choice-based elicitation mechanism is important in reducing...
Tipo: Working or Discussion Paper Palavras-chave: Resource /Energy Economics and Policy.
Ano: 2003 URL: http://purl.umn.edu/14518
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IS CHEAP TALK EFFECTIVE AT ELIMINATING HYPOTHETICAL BIAS IN A PROVISION AgEcon
Murphy, James J.; Stevens, Thomas H.; Weatherhead, Darryl.
Replaced with revised version of paper 10/06/04.
Tipo: Working or Discussion Paper Palavras-chave: Contingent valuation; Experiments; Hypothetical bias; Voluntary; Resource /Energy Economics and Policy; C9; Q26; H41.
Ano: 2003 URL: http://purl.umn.edu/14510
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