David R. Hakes (University of Northern Iowa) has prepared a study guide that will enhance your success. Each chapter of the study guide includes learning objectives, a description of the chapter's context and purpose, a chapter review, key terms and definitions, advanced critical-thinking questions, and helpful hints for understanding difficult concepts. You can develop your understanding of the material by doing the practice problems and answering the short-answer questions. Then you can assess your mastery of the key concepts with the self-test, which includes true/false and multiple-choice questions. Visit http://www.ichapters.com for more information on the Study Guide.