The judgment of distance on a plane surface

Abstract

A test was made of the scalability of interval-ordering judgments of distance along the median path of a plane horizontal surface. Scales were derived from different subsets of judgments. It was found that scale values were related to distance by a power function with marked individual differences in exponent, but that different subsets of judgment yielded the same mean exponent. This finding was taken as positive evidence of scalability. The individual differences in judgment were shown to be reliable over a period of 3 weeks. © 1978 Psychonomic Society, Inc.