Eta Squared, Partial Eta Squared, and Misreporting of Effect Size in Communication Research

  title={Eta Squared, Partial Eta Squared, and Misreporting of Effect Size in Communication Research},
  author={Timothy R. Levine and Craig R. Hullett},
  journal={Human Communication Research},
Communication researchers, along with social scientists from a variety of disciplines, are increasingly recognizing the importance of reporting effect sizes to augment significance tests. Serious errors in the reporting of effect sizes, however, have appeared in recently published articles. This article calls for accurate reporting of estimates of effect size. Eta squared (η 2 ) is the most commonly reported estimate of effect sized for the ANOVA. The classical formulation of eta squared… 

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