Note on Perception of Mean Size from Normal and Rectangular Distributions of Sizes

Abstract

Estimation of the average size of texture elements in a visual pattern is necessary for the calculation of the slant of a static surface when a texture gradient is used as the stimulus for slant. This study concerned Ss' ability to estimate the mean size of elements composing two visual patterns where these patterns have the same mean size but the distributions of sizes are different, i.e., normal and rectangular. It was found that type of distribution did not affect the estimate of mean size. Results were discussed in relation to predicting slant estimates.