Individual differences in power functions for a 1-week intersession interval

Research paper by William Engeland, William E. Dawson

Indexed on: 01 Mar '74Published on: 01 Mar '74Published in: Perception & psychophysics


Two experiments examined correlations of the power function exponents of individual Ss obtained in each of two sessions. Half the Ss for any task performed second sessions immediately after the first, the other half after a week’s delay. In Experiment I, groups of 16 Ss gave magnitude estimations of apparent area, or else of area and loudness. In Experiment II, groups of 16 Ss made cross-modality matches of apparent time duration to area. Significant correlations in all cases indicated consistent and persisting S differences in exponents. The results are related to the findings of other studies of such individual differences.