In this commentary, we offer a perspective on the problem of authors reporting and interpreting effect sizes in the absence of formal statistical tests of their chanceness. The perspective reinforces our previous distinction between single-study investigations and multiple-study syntheses.
Levin, Joel R. and Robinson, Daniel H.
"The Trouble With Interpreting Statistically Nonsignificant Effect Sizes in Single-Study Investigations,"
Journal of Modern Applied Statistical Methods: Vol. 2
, Article 23.
Available at: http://digitalcommons.wayne.edu/jmasm/vol2/iss1/23