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ERIC Number: EJ108462
Record Type: CIJE
Publication Date: 1974
Pages: N/A
Abstractor: N/A
ISBN: N/A
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EISSN: N/A
Quick Estimates of the Relative Efficiency of Two Tests as a Function of Ability Level
Lord, Frederic M.
Journal of Educational Measurement, 11, 4, 247-54, W 74
When comparing two tests that measure the same trait, separate comparisons should be made at different levels of the trait. A simple, practical, approximate formula is given for doing this. The adequacy of the approximation is illustrated using data comparing seven nationally known sixth-grade reading tests. (Author/RC)
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Grant or Contract Numbers: N/A