Were you looking for the book with access to MyEconLab? This product is the book alone and does NOT come with access to MyEconLab. Buy the book and access card package to save money on this resource. For Principles of Economics courses. Questions that drive interest, applications that illustrate concepts, and the tools to test and solidify comprehension. Students come into their first Economics course thinking they will gain a better understanding of the economy around them. Unfortunately, they often leave with many unanswered questions. To ensure students actively internalize economics, O'Sullivan/Sheffrin/Perez use chapter-opening questions to spark interest on important economic concepts, applications that vividly illustrate those concepts, and chapter-ending tools that test and solidify understanding.