The upper and lower twenty-seven per cent rule
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Publication:769331
DOI10.1007/BF02289130zbMath0080.13404OpenAlexW2078450304MaRDI QIDQ769331
Publication date: 1957
Published in: Psychometrika (Search for Journal in Brave)
Full work available at URL: https://doi.org/10.1007/bf02289130
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