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A Method of Scalogram Analysis Using Summary Statistics

Published online by Cambridge University Press:  01 January 2025

Bert F. Green
Bert F. Green*
Affiliation:
Massachusetts Institute of Technology
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Abstract

A method of Guttman scalogram analysis is presented that does not involve sorting and rearranging the entries in the item response matrix. The method requires dichotomous items. Formulas are presented for estimating the reproducibility of the scale and estimating the expected value of the chance reproducibility. An index of consistency is suggested for evaluating the reproducibility. An illustrative example is presented in detail. The logical basis of the method is discussed. Finally, several methods are suggested for dealing with non-dichotomous items.

Type
Original Paper
Information
Psychometrika , Volume 21 , Issue 1 , March 1956 , pp. 79 - 88
Copyright
Copyright © 1956 The Psychometric Society

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Footnotes

*

Lois K. Anderson assisted the author materially in the many computations required for this paper. The research reported in this paper was supported in part by the Department of Economics and Social Sciences at M.I.T. and in part, jointly, by the Army, Navy and Air Force under contract with the Massachusetts Institute of Technology.

References

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