Contrasts and Effect Sizes in Behavioral Research

Contrasts are statistical procedures for asking focused questions of data. Researchers, teachers of research methods and graduate students will be familiar with the principles and procedures of contrast analysis included here. But they, for the first time, will also be presented with a series of newly developed concepts, measures, and indices that permit a wider and more useful application of contrast analysis. This volume takes on this new approach by introducing a family of correlational effect size estimates. By returning to these correlations throughout the book, the authors demonstrate special adaptations in a variety of contexts from two group comparison to one way analysis of variance contexts, to factorial designs, to repeated measures designs and to the case of multiple contrasts.

Professor Ralph L. Rosnow is Thaddeus Bolton Professor Emeritus at Temple University in Philadelphia, PA, where he taught in the Psychology Department for thirty-four years and directed the doctoral program in social and organizational psychology. He also has taught research methods and social psychology at Boston University and Harvard University, and was a visiting professor at the London School of Economics. He received a B.Sc. from the University of Maryland, an M.A. from George Washington University, and a Ph.D. in psychology from American University in Washington, D.C. He has served on editorial boards of journals and encyclopedias and (with Robert E. Lana) was the general editor of Oxford University Press's RECONSTRUCTION OF SOCIETY series. He has been a fellow of AAAS and APA since 1970 and a charter fellow of APS since 1988. He and his wife, Mimi Rosnow, reside in Radnor, PA.