Title
The optimum decision rules for the oddity task
Author
Versfeld, N.J.
Dai, H.
Green, D.M.
TNO Technische Menskunde
Publication year
1996
Abstract
This paper presents the optimum decision rule for an m-interval oddity task in which m-1 intervals contain the same signal and one is different or odd. The optimum decision rule depends on the degree of correlation among observations. The present approach unifies the different strategies that occur with "roved" or "fixed" experiments (Macmillan & Creelman, 1991, p. 147). It is shown that the commonly used decision rule for an m-interval oddity task corresponds to the special case of highly correlated observations. However, as is also true for the same-different paradigm, there exists a different optimum decision rule when the observations are independent. The relation between the probability of a correct response and d′ is derived for the three-interval oddity task. Tables are presented of this relation for the three-, four-, and five-interval oddity task. Finally, an experimental method is proposed that allows one to determine the decision rule used by the observer in an oddity experiment.
Subject
Psychology
Decision making
Perceptive discrimination
Statistical model
Decision Making
Discrimination (Psychology)
Likelihood Functions
Mathematics
Models, Statistical
Signal Detection (Psychology)
To reference this document use:
http://resolver.tudelft.nl/uuid:68a5816c-19ea-47ce-9aeb-d7904f366de6
TNO identifier
233148
ISSN
0031-5117
Source
Perception and Psychophysics, 58 (1), 10-21
Document type
article