McConnell/Brue/Flynn has long set the standard for providing high-quality content to instructors and students all over the world. It has remained the most widely used principles of economics product as a result of persistent innovation. The 19th edition brought adaptive technology to the market for the first time with LearnSmart, a resource that ensures that every minute a student spends studying is the most efficient and productive time possible. Feedback from users in combination with the analysis of student performance data from the 19th edition s digital products significantly informed the revision of the 20th edition, resulting in a product expertly tailored to the needs of today s students. With the 20th edition, students and instructors will benefit from a new offering that expands upon the dynamic and superadaptive capabilities of LearnSmart: SmartBook, the first and only adaptive eBook. McConnell/Brue/Flynn s tradition of innovation continues with the 20th edition, providing market-leading content and digital mastery to benefit today s learners."