NEW! All 488 boxed excerpts , found throughout the text and taken from current research reports are 1) completely new to this edition, and 2) feature accounts from the most contemporary research reports out today. NEW! Chapter 19 on Multivariate Tests covering means (i.e., ANOVA and ANCOVA) and supporting the fact that more and more researchers today are using these types of assessments. NEW! Chapter 20 has been completely re-written to cover Factor Analysis in order to give readers an understanding of the subject matter, presenting the important new topic in research, “structural equation modeling.” NEW! Chapter 21 on Structural Equation Modeling (SEM), the valuable new tool being used by many researchers in the social sciences today, is covered in a completely revised and re-written chapter. NEW! Chapter 16 explains the differences of “Moderated” and “Mediated” Multiple Regression in great detail and why the differences matter. NEW! Chapter content covers a myriad of mini-topics related to research and statistics–such as the geometric mean, Tau-b correlation, Guttman split-half reliability, sensitivity, specificity, and the Sobel test. Mini-topics are dispersed throughout the text in appropriate places to give readers a better grasp at understanding the material, and ultimately deciphering and critiquing research reports on their own.