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A wine buyer is faced with a multitude of often diverging expert reviews and ratings of one and the same wine. In a paper written for the American Association of Wine Economists, Omer Gokcekus(Seton Hall University) & Dennis Nottebaum (University of Münster) attempt to shed light on the question to whose rating a regular buyer should pay attention. They did so by comparing the ratings of regular consumers with ratings by Robert Parker, the Wine Spectator, and Stephen Tanzer.  Read their results here.