Stimulus spacing and successive interval scale values

Abstract

An attempt was made to determine the extent to which the interval properties of attitude scales constructed by the method of successive intervals are dependent upon the stimulus spacing properties of the statement group that is judged. 4 stimulus spacing conditions were used. 312 Ss were asked to judge on a 9-category scale sets of statements that had been extracted from the Thurstone and Chave scale measuring attitudes toward the church. The results of the study showed a straight line fit could accommodate scale values coming from paired experimental groups. Dispersion estimates did not permit a linear fit. (PsycInfo Database Record (c) 2025 APA, all rights reserved)