Psychophysics of Perceived Intensity: A Theoretical Basis for Fechner's and Stevens' Laws

Science  22 Mar 1963:
Vol. 139, Issue 3560, pp. 1213-1216
DOI: 10.1126/science.139.3560.1213-a


A "matching-response" model of psychophysical judgment is proposed, in terms of which power-law relationships would be expected between perceived intensity and stimulus strength, even though receptors had logarithmic response characteristics. On this model, observed differences in exponent for various modalities would reflect differences in coupling coefficients, rather than in transducer mechanisms.