Abstract
Previous research has found that the de Boer scale - the most frequently used discomfort glare scale in the automotive context - is not compatible with population stereotypes of U.S. observers. The present study was designed to compare the ratings obtained from the de Boer scale to ratings from three alternative discomfort glare scales. Of additional interest was the relation between discomfort glare ratings and brightness ratings for the same stimuli. The scales evaluated were the de Boer scale, the DANDY scale (a newly developed categorical scale), an anchored magnitude estimation scale, a free magnitude estimation scale, and a brightness magnitude estimation scale. (Author/publisher)