Statistical Methods for Psychology

of California – Irvine; Mathew Spackman, Brigham Young University; Mary Uley, Linden-

wood University; and Christy Witt, Louisiana State University. Their influence is still

evident in this edition.

The publishing staff was exceptionally helpful throughout, and I would like to thank

Vernon Boes, Art Director; Tierra Morgan, Marketing Manager; Rebecca Rosenberg, Senior

Assistant Editor; and Christine Caruso, Pre-PressPMG.

David C. Howell

Professor Emeritus

University of Vermont

Steamboat Springs, CO

xx Preface