title: ANCOVA, selection bias, statistical equating, and effect size: recommendations for publication.
authors.forename: Jerry A
authors.initials: JA
authors.lastname: Colliver
authors.forename: Stephen J
authors.initials: SJ
authors.lastname: Markwell
mesh_terms: D000704:Analysis of Variance; D003627:Data Interpretation, Statistical; D004501:Education, Medical; D011642:Publications; D015983:Selection Bias; D014481:United States