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Joseph Little and Robert Berrens
''Explaining Disparities between Actual and Hypothetical Stated Values: Further Investigation Using Meta-Analysis''
( 2004, Vol. 3 No.6 )
Spurred by the need to account for non-market values in various policy applications, a lively and extended debate has surrounded the presence and magnitude of hypothetical bias in stated value studies (e.g., applications of the survey-based contingent valuation method). Using the rapidly accumulating set of comparison studies, List and Gallet (2001) conducted an initial meta-analysis of the experimental protocol that may be influencing the disparity between real and hypothetical values in stated value studies. We expand the original meta-analysis by using a significantly larger (29%) data set, including variables to account for referendum formats, certainty corrections, and cheap talk scripts.
JEL: C9 - Design of Experiments: General
C1 - Econometric and Statistical Methods: General
Manuscript Received : Dec 19 2003 Manuscript Accepted : Mar 01 2004

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