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The Signal/Noise Ratio in the Comparison of Reliability Coefficients

The Signal/Noise Ratio in the Comparison of Reliability Coefficients EDUCATIONAL AND PSYCHOLOGICAL MEASUREMENT Vol. 1964 XXIV, No. 3, IN THE COMPARISON THE RATIO SIGNAL/NOISE OF RELIABILITY COEFFICIENTS C. GLESER 1 LEE J. CRONBACH AND GOLDINE of Illinois University FROM time to to or supple- time, investigators propose replace ment the correlational index of test with some other reliability (r) index related index with to it. One monotonically suggested par- ticular is some transformation of this ratio. or frequency r) r/(1 - Its as an index root was forward Jackson square put (1939) by of of in the first of analysis &dquo;sensitivity&dquo; published application variance to test &dquo;standard of test&dquo; length theory. Woodbury’s is calculated from which he calls the &dquo;amount (1951) r/ ( 1 - r), of information&dquo; in the test. Gulliksen a seeking (1950, p. 85), function of test &dquo;invariant with to in reliability respect changes test showed that the ratio - the length,&dquo; (1 r) /r multiplied by number of items has this In none of these has it property. papers been made clear what is to be the entirely gained by changing correlational index to such have another and transformations form, been in used on tests. This note is intended to make rarely reports clear http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Educational and Psychological Measurement SAGE

The Signal/Noise Ratio in the Comparison of Reliability Coefficients

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References (12)

Publisher
SAGE
Copyright
Copyright © by SAGE Publications
ISSN
0013-1644
eISSN
1552-3888
DOI
10.1177/001316446402400303
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Abstract

EDUCATIONAL AND PSYCHOLOGICAL MEASUREMENT Vol. 1964 XXIV, No. 3, IN THE COMPARISON THE RATIO SIGNAL/NOISE OF RELIABILITY COEFFICIENTS C. GLESER 1 LEE J. CRONBACH AND GOLDINE of Illinois University FROM time to to or supple- time, investigators propose replace ment the correlational index of test with some other reliability (r) index related index with to it. One monotonically suggested par- ticular is some transformation of this ratio. or frequency r) r/(1 - Its as an index root was forward Jackson square put (1939) by of of in the first of analysis &dquo;sensitivity&dquo; published application variance to test &dquo;standard of test&dquo; length theory. Woodbury’s is calculated from which he calls the &dquo;amount (1951) r/ ( 1 - r), of information&dquo; in the test. Gulliksen a seeking (1950, p. 85), function of test &dquo;invariant with to in reliability respect changes test showed that the ratio - the length,&dquo; (1 r) /r multiplied by number of items has this In none of these has it property. papers been made clear what is to be the entirely gained by changing correlational index to such have another and transformations form, been in used on tests. This note is intended to make rarely reports clear

Journal

Educational and Psychological Measurement – SAGE

Published: Oct 1, 1964

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