Abstract
Experimental data obtained from 5 subjects involving judgments regarding length of lines are presented. A method of constant stimuli which included a two-category mode of judgment was employed. These experimental data are found to fit rather well theoretically predicted derivations with respect to decision-time and relative frequency of judgment. The methodological significance of this type of theoretical analysis is stressed. (PsycINFO Database Record (c) 2006 APA, all rights reserved)