The Halo Effect highlights the tendency of experts to point to the high financial performance of a successful company and then spread its golden glow to all of the company’s attributes – clear strategy, strong values and brilliant leadership. But in fact, as Rosenzweig clearly illustrates, the experts are not just wrong, but deluded. In this irreverent and witty book, the author shows how to truly understand business performance and suggests a more accurate way to think about leading a company, a robust and clear-headed approach that can help companies improve their chances of success.