Statistical Power MetaAnalysis and the Interpretation of Research Results. This succinct and jargon-free introduction to effect sizes gives students and researchers the tools they need to interpret the practical significance of their results. Using a class-tested approach that includes numerous examples and step-by-step exercises, it introduces and explains three of the most important issues relating to the practical significance of research results the reporting and interpretation of effect sizes Part I, the analysis of statistical power Part II, and the meta-analytic pooling of effect size...