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The Approximation of a Group Stimulus Space by Averaging Responses to Selected Subsets of the Stimuli

Published online by Cambridge University Press:  01 January 2025

Earl J. Robinson  and
Robert W. Lissitz
Earl J. Robinson
Affiliation:
University of Georgia
Robert W. Lissitz*
Affiliation:
University of Georgia
*
Requests for reprints should be sent to Robert W. Lissitz, Psychology Department, University of Georgia, Athens, Georgia 30602.
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Abstract

This paper presents a simple random procedure for selecting subsets of stimulus pairs for presentation to subjects. The resulting set of ratings from the group of subjects allows the construction of a group (average) space through the use of the computer program TORSCA-9 or equivalent programs. The procedure is applied to both real and simulated data. It is found that subjects need only make between 20% and 50% of the usual judgements to reconstruct a reasonably accurate group space.

Keywords

Multi-dimensional scalingaverage spacepaired comparisons
Type
Notes And Comments
Information
Psychometrika , Volume 42 , Issue 3 , September 1977 , pp. 447 - 450
Copyright
Copyright © 1977 The Psychometric Society

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References

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