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Factor pattern of test items and tests as a function of the correlation coefficient: Content, difficulty, and constant error factors

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  • Robert Wherry
  • Richard Gaylord

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  • Robert Wherry & Richard Gaylord, 1944. "Factor pattern of test items and tests as a function of the correlation coefficient: Content, difficulty, and constant error factors," Psychometrika, Springer;The Psychometric Society, vol. 9(4), pages 237-244, December.
    • Handle: RePEc:spr:psycho:v:9:y:1944:i:4:p:237-244
    DOI: 10.1007/BF02288734
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    References listed on IDEAS

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    1. M. Richardson, 1936. "The relation between the difficulty and the differential validity of a test," Psychometrika, Springer;The Psychometric Society, vol. 1(2), pages 33-49, June.
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