List of Contributors

Foreword

Bruce Thompson

On Some History Regarding Statistical Testing

Carl J Huberty

Chandler J. Pike

Five Methodology Errors in Educational Research: A Pantheon of Statistical Significance and Other Faux Pas

Bruce Thompson

Effect Size Measures: What They are and How to Compute Them

Frederick J. Kier

Relating Variance Partitioning in Measurement Analyses to the Exact Same Process in Substantive Analyses

Thomas E. Dawson

Fixed-, Random-, and Mixed-Effects Anova Models: A User-Friendly Guide for Increasing the Generalizability of Anova Results

Brigitte N. Frederick

Factor Scores and Factor Structure and Communality Coefficients

Robert D. Wells

Defining and Interpreting Suppressor Effects: Advantages and Limitations

Brian P. Lancaster

Why Generalizability Theory is Essential and Classical Test Theory is Often Inadequate

Kevin M. Kieffer

Item Response Theory: Understanding the One-Parameter Rasch Model

Catherine E. Cantrell

Multivariate Normality: What is it and How is it Assessed?

Robin K. Henson

Strategies for Detecting Outliers in Regression Analysis: An Introductory Primer

Victoria P. Evans

Analyzing Repeated Measures Designs Using Univariate and Multivariate Methods: A Primer

Jesus Tanguma

New Approaches to the Analysis of Repeated Measurements

H. J. Keselman

James Algina

Robert J. Boik

Rand R. Wilcox

The Simple Difference Score as an Inherently Poor Measure of Change: Some Reality, Much Mythology

Bruno D. Zumbo

Partitioning Variance in the Multivariate Case: A Step-By-Step Guide to Canonical Commonality Analysis

Brigitte N. Frederick

Acceptable Variable Deletion Methods in Canonical Correlation Analysis

Catherine E. Cantrell

Canonical Redundancy (Rd) Coefficients: They Should (Almost Never) Be Computed and Interpreted