Two of the better approaches to the scaling of stimuli are the methods of pair comparison and pair comparison treatment of complete ranks under the assumptions of Thurstone's Case III. This paper outlines a computer program with four data input options which scales up to 40 stimuli using these methods. The program will also compute an absolute scale zero point if the user employs the Horst method of balanced values (acceptance or rejection of pairs) in addition to the pair comparison procedure. Output of the program is detailed and includes, in addition to scale values and standard deviations, several matrices which allow Case IV or V scaling by hand with minimal effort.
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References
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