Read Dr. Karla Steubing’s recommendations for interpreting effect sizes based on Kelley, K., & Preacher, K. J. (2012). On effect size. Psychological Methods, 17, 137–152.
Read Dr. Michael Vaughn’s recommendations for practice based on Brinch, C. N., & Galloway, T. A. (2011). Schooling in adolescence raises IQ scores. Proceedings of the National Academy of Sciences, 109(2), 425–430. doi:10.1073/pnas.1106077109.
Read Dr. Amy Barth’s recommendations for practice based on Johnson, E. S., Jenkins, J. R., Petscher, Y., & Catts, H. W. (2009). How can we improve the accuracy of screening instruments? Learning Disabilities Research and Practice, 24, 174–185.