For an article that offers a simple explanation for how to calculate Cohen's
d effect sizes from published data, please consider the online article
co-authored with Samantha Cook of Harvard University.
The article:
Thalheimer, W., & Cook, S. (2002, August). How to calculate effect sizes
from published research articles: A simplified methodology.
Available online from http://work-learning.com/effect_sizes.htm.
Note that it's actually an article and spreadsheet (that automates the
calculations).
This article was written for researchers like myself who are not agile where
statistics are concerned. Feedback is welcome.
Will Thalheimer, PhD
Work-Learning Research
Somerville, MA, USA
(617) 718-0067
www.work-learning.com
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Work-Learning Research compiles research on learning and disseminates
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