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The parameters in the near-miss-to-Weber's law
- Source :
-
Journal of Mathematical Psychology . Feb2008, Vol. 52 Issue 1, p37-47. 11p. - Publication Year :
- 2008
-
Abstract
- Abstract: Many empirical data support the hypothesis that the sensitivity function grows as a power function of the stimulus intensity. This is usually referred to as the near-miss-to-Weber''s law. The aim of the paper is to examine the near-miss-to-Weber''s law in the context of psychometric models of discrimination. We study two types of psychometric functions, characterized by the representations (type A), and (type B). A central result shows that both types of psychometric functions are compatible with the near-miss-to-Weber''s law. If a representation of type B exists, then the exponent in the near-miss is necessarily a constant function, that is, does not depend on the criterion value used to define “just noticeably different”. If, on the other hand, a representation of type A exists, then the exponent in the near-miss-to-Weber''s law can vary with the criterion value. In that case, the parameters in the near-miss co-vary systematically. [Copyright &y& Elsevier]
- Subjects :
- *STIMULUS intensity
*MATHEMATICS
*WEBER-Fechner law
*PSYCHOPHYSICS
Subjects
Details
- Language :
- English
- ISSN :
- 00222496
- Volume :
- 52
- Issue :
- 1
- Database :
- Academic Search Index
- Journal :
- Journal of Mathematical Psychology
- Publication Type :
- Periodical
- Accession number :
- 31397512
- Full Text :
- https://doi.org/10.1016/j.jmp.2007.11.001