Resampling permutation probability values for Cronbach's alpha

Percept Mot Skills. 2009 Apr;108(2):431-8. doi: 10.2466/PMS.108.2.431-438.

Abstract

A permutation procedure to compute a resampling probability value and empirical quantile limits is provided for Cronbach's alpha measure of internal reliability. The underlying assumptions for the conventional use of alpha are discussed. The use of a permutation test for Cronbach's alpha is highlighted as a valuable tool when sample sizes are small and necessary assumptions cannot be met.

MeSH terms

  • Algorithms
  • Educational Measurement / statistics & numerical data
  • Humans
  • Models, Statistical
  • Probability*
  • Sample Size
  • Statistics as Topic / methods*