ERIC Number: ED449212
Record Type: RIE
Publication Date: 2001-Feb-1
An Introductory Summary of Various Effect Size Choices.
This paper provides a tutorial summary of some of the many effect size choices so that members of the Southwest Educational Research Association would be better able to follow the recommendations of the American Psychological Association (APA) publication manual, the APA Task Force on Statistical Inference, and the publication requirements of some journals. Effect sizes can be classified into two general families: standard differences and variance-accounted-for measures of strength of association. Standardized differences are defined as the standardized difference between two groups. The variance-accounted-for measure of strength of association is defined as the variance-accounted-for squared correlation between the independent and dependent variables. Within these families, several different choices of effect size are available. (Contains 22 references.) (Author/SLD)
Publication Type: Reports - Descriptive; Speeches/Meeting Papers
Education Level: N/A
Authoring Institution: N/A
Note: Paper presented at the Annual Meeting of the Southwest Educational Research Association (New Orleans, LA, February 1-3, 2001).