Abstract
Unpleasant loud tone-stimuli usually elicit lowering of body resistance to electric current. The magnitudes of such resistance changes are directly related to the pitch frequency of the sound stimuli when the loudness variable is held constant. The loudness values are describable in terms of units above absolute thresholds for particular frequencies. The judgment of equal loudness of tones was found to be a measure of their disturbing power as indicated by the galvanic response. (PsycINFO Database Record (c) 2006 APA, all rights reserved)