For courses in Intermediate Macroeconomics.   A Unified Approach to Economic Theory Demonstrating a balanced treatment of both classical and Keynesian economics, Macroecomomics presents macroeconomic theory in a big-picture way. Comprehensive coverage makes it easy for readers to analyze real macroeconomic data used by policy makers and researchers. This text uses a unified approach based on a single economics model that provides readers with a clear understanding of macroeconomics and its classical and Keynesian assumptions. The Ninth Edition features new applications, boxes, and problems throughout and reflects recent events and developments in the field in light of recent crises in the United States and Europe.   Also available with MyEconLab MyEconLab is an online homework, tutorial, and assessment program designed to work with this text to engage students and improve results. Within its structured environment, students practice what they learn, test their understanding, and pursue a personalized study plan that helps them better absorb course material and understand difficult concepts.   Note: You are purchasing a standalone product; MyLab™ & Mastering™ does not come packaged with this content. Students, if interested in purchasing this title with MyLab & Mastering, ask your instructor for the correct package ISBN and Course ID. Instructors, contact your Pearson representative for more information.   If you would like to purchase both the physical text and MyLab & Mastering, search for:   0134467221 / 9780134467221 Macroeconomics Plus MyEconLab with Pearson eText -- Access Card Package   Package consists of: 0134143183 / 9780134143187 MyEconLab with Pearson eText -- Access Card -- for Macroeconomics 0134167392 / 9780134167398 Macroeconomics