Multidimensional stimulus differences and accuracy of discrimination.

Abstract

Determined discrimination accuracy using the method of absolute judgment for a series of stimuli varying along the single dimensions of size, hue and brightness. These measures were compared with measures obtained when the stimuli varied on several dimensions simultaneously. It was found that discriminability for a multidimensional series of stimuli was considerably greater than that obtained for any of the compounding dimensions used alone. Also showed that the discrimination accuracy for a compounded series of stimuli could be predicted with reasonable accuracy if the discrimination accuracy of the compounding dimensions is known. Language: en