Accession Number:

ADA582513

Title:

Empirical and Theoretical Studies of Psychophysical Phenomena

Descriptive Note:

Final rept. 29 Sep 2010-29 Dec 2012

Corporate Author:

CALIFORNIA UNIV IRVINE

Personal Author(s):

Report Date:

2013-03-01

Pagination or Media Count:

16.0

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 loudnessbrightness when pitchhue is varied. Various implications of the behavioral theory have been have been derived. Among the areas studied are the time-order error, regression effect, Torgersons conjecture. The theory, based on a theory of magnitude productions, is extended to ratings.

Subject Categories:

  • Psychology

Distribution Statement:

APPROVED FOR PUBLIC RELEASE