How Expert are “Expert” Wine Judges?*

Robert T. Hodgson

Journal of Wine Economics, 2009, vol. 4, issue 2, 233-241

Abstract: Recent papers by Hodgson (2008) and Gawel and Godden (2008) have questioned the consistency of expert wine judges in a wine competition setting. In the latter paper, a methodology introduced in psychometric research to measure judge reliability corrected for chance was used to quantify judge consistency (Cohen, 1968). This paper extends that notion, suggesting a value of 0.7 for Cohen's weighted kappa might be used to define an expert wine judge. With that criterion, less than 30% of judges who participated in either of the two studies would be considered “expert.” (JEL Classification: C1, L15)

Date: 2009
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