Effects of purpose of appraisal on discriminability and accuracy of ratings

Here we evaluate, replicate, and extend 1982 research by Zedeck and Cascio on the relationship between purpose and characteristics of rating. We propose and test an alternative explanation for the Zedeck and Cascio conclusion that discriminability in ratings is affected by their purpose. Results provide partial support for both explanations. Using a measure of rating accuracy as the criterion, no significant effect of purpose is obtained.