SAGE Reference - Encyclopedia of Research Design

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Spearman-Brown Prophecy Formula

In: Encyclopedia of Research Design
Edited by: Neil J. Salkind
Subject:Research Design

Charles Spearman and William Brown separately derived a formula to predict the reliability of a test [Page 1403]when its length was altered by the addition or subtraction of parallel items. Each presented their formula in 1910 in Volume Three of The ...

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  Salkind, N. J. (2010). Spearman-brown prophecy formula. In Encyclopedia of research design (Vol. 1, pp. 1403-1404). SAGE Publications, Inc., https://dx.doi.org/10.4135/9781412961288.n427
  
  Salkind, Neil J. "Spearman-Brown Prophecy Formula." In Encyclopedia of Research Design, edited by Salkind, Neil J., 1403-4. Thousand Oaks, CA: SAGE Publications, Inc., 2010. https://dx.doi.org/10.4135/9781412961288.n427.
  
  Salkind, N. J. 2010. Spearman-Brown Prophecy Formula. In: Neil J. Salkind Editor, 2010. Encyclopedia of Research Design, Thousand Oaks, CA: SAGE Publications, Inc. pp. 1403-1404 Available at: <https://dx.doi.org/10.4135/9781412961288.n427> [Accessed 1 Jul 2022].
  
  Salkind, Neil J. "Spearman-Brown Prophecy Formula." Encyclopedia of Research Design. Edited by Vol. 1. Thousand Oaks: SAGE Publications, Inc., 2010, pp. 1403-4. SAGE Knowledge. 1 Jul 2022, doi: https://dx.doi.org/10.4135/9781412961288.n427.
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