Related Experiment Video
Updated: Aug 25, 2026

Creating Virtual-hand and Virtual-face Illusions to Investigate Self-representation
Published on: March 1, 2017
Symmetric and asymmetric matching of joint presentations
1Department of Cognitive Sciences, University of California, Irvine, CA 92697-5100, USA. rdluce@uci.edu
Abstract:
The global psychophysical theory of summation and magnitude production of R. D. Luce (2002) had joint presentations of pairs of intensities (measured above threshold) being matched asymmetrically, with 1 component being 0 intensity and the other the matching intensity. For loudness, an intensity pair to the 2 ears is matched by an intensity in just 1 ear. Realizing this experimentally has been difficult, and so, this article extends the theory to the use of symmetric matches with the same intensity being used in both components. In addition, the representational aspect is much improved; a new formulation of the results of the earlier theory is presented; the theory for symmetric matches is outlined; and it is shown that if 1 form of segregation, right or left, holds for asymmetric matches and 1 for symmetric ones, then all forms of segregation hold.
Related Concept Videos
Sign Test for Matched Pairs
To conduct the sign test, we first calculate the differences in value between...
Structural Classification of Joints
A fibrous joint is where the adjacent bones are united by fibrous connective...
Functional Classification of Joints
The functional classification of joints is determined by the amount of mobility between the adjacent bones. Joints are functionally classified as a synarthrosis or immobile joint, an amphiarthrosis or slightly moveable joint, or as a diarthrosis, a freely moveable joint. Fibrous and cartilaginous joints can be functionally classified as either synarthroses or amphiarthroses, whereas all synovial joints are classified as diarthroses.
Synarthrosis
An immobile...
Symmetric Member in Bending
Wilcoxon Signed-Ranks Test for Matched Pairs
Processes of Self-Presentation
