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ERIC Number: EJ847463
Record Type: Journal
Publication Date: 2009
Pages: 14
Abstractor: As Provided
Reference Count: 45
ISSN: ISSN-1937-0814
Computing & Interpreting Effect Sizes in Educational Research
Thompson, Bruce
Middle Grades Research Journal, v4 n2 p11-24 Sum 2009
The present article provides a primer on using effect sizes in research. A small heuristic data set is used in order to make the discussion concrete. Additionally, various admonitions for best practice in reporting and interpreting effect sizes are presented. Among these is the admonition to not use Cohen's benchmarks for "small," "medium," and "large" effects, and instead to interpret effects in direct and explicit comparison against the effects in the related prior literature. (Contains 2 tables.)
Institute for School Improvement, Missouri State University. 901 South National Avenue, Springfield, MO 65897. Tel: 417-836-8854; Fax: 417-836-8881; Web site:
Publication Type: Journal Articles; Reports - Descriptive
Education Level: Middle Schools
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A