Test length and validity

Bell, Richard C.
Lumsden, James
1980
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Test length and validity

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1980

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The effect of test length on predictive validity is examined empirically by successively omitting the poorest items and by calculating the correlations between the reduced test scores and the criterion. It was found, for four tests, that the curve of validity against test length had a very gentle slope for the longer tests and that all tests could be reduced by more than 60% without appreciable decreases in validity.

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Applied Psychological Measurement, Volume 04, 1980

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Bell, Richard & Lumsden, James. (1980). Test length and validity. Applied Psychological Measurement, 4, 165-170. doi:10.1177/014662168000400203

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doi:10.1177/014662168000400203

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Bell, Richard C.; Lumsden, James. (1980). Test length and validity. Retrieved from the University Digital Conservancy, https://hdl.handle.net/11299/100028.

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