Accuracy of Item Performance Predictions Based on the Nedelsky Standard Setting Method

  • Melican G
  • Mills C
  • Plake B
  • 4

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Abstract

The Nedelsky standard (L. Nedelsky, 1954) uses an option elimination strategy to estimate the probability that a minimally competent candidate (MCC) will answer a multiple-choice item correctly. Tests administered nationally to 6,838 candidates for teacher certification in mathematics and elementary education were analyzed to investigate the accuracy of this standard as a predictor of item performance. Test-taking behavior did not match the underlying assumption of Nedelsky that MCCs randomly guess among the options judges believe should be attractive. The accuracy of predicted item performance also varied as a function of item difficulty and content domain. However, analyses indicated that useful information about examinee item performance is obtainable from Nedelsky-based judgments. (PsycINFO Database Record (c) 2012 APA, all rights reserved)

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Authors

  • G. J. Melican

  • C. N. Mills

  • B. S. Plake

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