title: Meta-analysis of raw mean differences.
abstract: This article discusses the meta-analysis of raw mean differences. It presents a rationale for cumulating psychological effects in a raw metric and compares raw mean differences to standardized mean differences. Some limitations of standardization are noted, and statistical techniques for raw meta-analysis are described. These include a graphical device for decomposing effect sizes. Several illustrative data sets are analyzed.
authors.affiliation: Department of Psychology, Texas Christian University, Fort Worth, TX 76129, USA. c.bond@tcu.edu
authors.forename: Charles F
authors.initials: CF
authors.lastname: Bond
authors.forename: Wyndy L
authors.initials: WL
authors.lastname: Wiitala
authors.forename: F Dan
authors.initials: FD
authors.lastname: Richard
mesh_terms: D003627:Data Interpretation, Statistical; D006801:Humans; D015201:Meta-Analysis as Topic; D011594:Psychometrics / Q000706:statistics & numerical data; D011613:Psychotherapy / Q000706:statistics & numerical data*; D016032:Randomized Controlled Trials as Topic / Q000706:statistics & numerical data*; D015203:Reproducibility of Results