Dual loudness scales in individual subjects.

Conducted 3 experiments in which each of 7 Ss (aged 21–34 yrs) with normal hearing matched the loudness of a single tone to the loudness differences within tone pairs, gave magnitude estimations of those differences, and gave magnitude estimations of single tone loudnesses. Findings show that individual Ss used several loudness scales to perform these tasks, in accordance with L. E. Marks's (see record 1979-27779-001) theory proposing a family of peceptual scales serving different purposes with a sense modality. At least 3 Ss used the same scale to match loudnesses to loudness differences and to give magnitude estimations of the loudness of single tones in Exps I and III, but used a shallower sloped scale when giving magnitude estimations of loudness differences in Exp II. (30 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)