Demystifying omega squared: Practical guidance for effect size in common analysis of variance designs

Omega squared (ω^2) is a measure of effect size for analysis of variance (ANOVA) designs. It is less biased than eta squared, but reported less often. This is in part due to lack of clear guidance on how to calculate it. In this paper, we discuss the logic behind effect size measures, the problem wi...

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Bibliographic Details

Published in:	Psychological methods Vol. 30; no. 4; p. 866
Main Authors:	Kroes, Antoinette D A, Finley, Jason R
Format:	Journal Article
Language:	English
Published:	United States 01.08.2025
Subjects:	Analysis of Variance Data Interpretation, Statistical Humans Psychology - methods Research Design
ISSN:	1939-1463, 1939-1463
Online Access:	Get more information
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