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An Empirical Study of Systematic Errors in Estimates of Item Difficulty Obtained from Use of Upper and Lower 27 Per Cent Criterion Groups

Educational and Psychological Measurement

Impact Factor: 4.4 / 5-Year Impact Factor: 4.5

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Research article

First published online April, 1957

An Empirical Study of Systematic Errors in Estimates of Item Difficulty Obtained from Use of Upper and Lower 27 Per Cent Criterion Groups

and

Volume 17, Issue 1

https://doi.org/10.1177/001316445701700111

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References

Guilford, J. P. Psychometric Methods. Second Edition. New York: McGraw-Hill, Inc., 1954.

Michael, William B. , Hertzka, Alfred F. , and Perry, Norman C. "Errors in Estimates of Item Difficulty Obtained from Use of Extreme Groups on a Criterion Variable." EDUCATIONAL AND PSYCHOLOGICAL MEASUREMENT, XIII (1953), 601-606.

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