A comprehensive and user-friendly introduction to statistics-now revised and updated Introductory Statistics for the Behavioral Sciences has had a long and successful history and is a popular and well-respected statistics text. Now in its sixth edition, the text has been thoroughly revised to present all the topics students in the behavioral sciences need in a uniquely accessible format that aids in the comprehension and implementation of the statistical analyses most commonly used in the behavioral sciences. Using a continuous narrative that explains statistics and tracks a common data set throughout, the authors have developed an innovative approach that makes the material unintimidating and memorable, providing a framework that connects all of the topics in the text and allows for easy comparison of different statistical analyses. New features in this Sixth Edition include: * Different aspects of a common data set are used to illustrate the various statistical methods throughout the text, with an emphasis on drawing connections between seemingly disparate statistical procedures and formulas * Computer exercises based on the same large data set and relevant to that chapter's content. The data set can be analyzed by any available statistical software * New "Bridge to SPSS" sections at the end of each chapter explain, for those using this very popular statistical package, how to perform that chapter's statistical procedures by computer, and how to translate the output from SPSS * New chapters on multiple comparisons and repeated-measures ANOVA

Joan Welkowitz, PhD, was a Professor of Psychology at New York University. She directed the clinical program for ten years, and taught courses in methodology and statistics at both the graduate and undergraduate levels for more than twenty-five years.

Barry H. Cohen, PhD, is the Director of the master's program in psychology at New York University, where he has been teaching statistics for more than twenty years. He is the author or coauthor of two other successful statistics books also from Wiley–Explaining Psychological Statistics, Second Edition and Essentials of Statistics for the Social and Behavioral Sciences with R. Brooke Lea.

Robert B. Ewen, PhD, teaches advanced placement psychology at Gulliver Preparatory School in Miami, Florida. He previously taught statistics for eight years as an associate professor at New York University. He is also the author of a successful college text on theories of personality that is currently in its sixth edition.