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Accession Number ADA582513
Title Empirical and Theoretical Studies of Psychophysical Phenomena.
Publication Date Mar 2013
Media Count 16p
Personal Author R. Steingrimsson R. D. Luce
Abstract This project is an extensive exploration of ratio scales of subjective measures on the basis of an empirically tested theory of fundamental psychophysical measurement, mimicking classical, static physical approach to measurement. The theory has been favorably evaluated in loudness, brightness, and perceived contrast. The theory, formulated for binary senses, is extended to unary senses, giving a complete theory for intensive dimensions. Cross-modal and dimensional predictions have been developed to answer questions such as: to what degree are all subjective intensities a special cases of a single ratio scale of subjective intensity. How do binary and unary dimension relate. A commutativity property extends to asking whether a single ratio scale obtains when a stimulus varies on more than one dimension. Data support a single ratio scale of loudness/brightness when pitch/hue is varied. Various implications of the behavioral theory have been have been derived. Among the areas studied are the time-order error, regression effect, Torgerson's conjecture. The theory, based on a theory of magnitude productions, is extended to ratings.
Keywords Behavior
Conjoint commutativity
Non-equal matches
Regression effect
Unary senses

Source Agency Non Paid ADAS
NTIS Subject Category 92B - Psychology
57T - Psychiatry
Corporate Author California Univ., Irvine.
Document Type Technical report
Title Note Final rept. 29 Sep 2010-29 Dec 2012.
NTIS Issue Number 1326
Contract Number FA9550-10-1-0468

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