Stevens' phenomenon?

[Joseph Danto]

try steven's articles:
	Psych Rev. 54, 153-181 (1957) 
		On the Psychophysical Law*
	Percept. Psychophysiol 1, 5-8 (1966)
		Matching functionsn between loudness and...*

(Gelfand source)
Joseph Danto, Ph.D.
danto at yu1.yu.edu