How the obsession with quantifying human performance threatens our schools, medical care, businesses, and government

Today, organizations of all kinds are ruled by the belief that the path to success is quantifying human performance, publicizing the results, and dividing up the rewards based on the numbers. But in our zeal to instill the evaluation process with scientific rigor, we've gone from measuring performance to fixating on measuring itself. The result is a tyranny of metrics that threatens the quality of our lives and most important institutions. In this timely and powerful book, Jerry Muller uncovers the damage our obsession with metrics is causing--and shows how we can begin to fix the problem.

Filled with examples from education, medicine, business and finance, government, the police and military, and philanthropy and foreign aid, this brief and accessible book explains why the seemingly irresistible pressure to quantify performance distorts and distracts, whether by encouraging "gaming the stats" or "teaching to the test." That's because what can and does get measured is not always worth measuring, may not be what we really want to know, and may draw effort away from the things we care about. Along the way, we learn why paying for measured performance doesn't work, why surgical scorecards may increase deaths, and much more. But metrics can be good when used as a complement to—rather than a replacement for—judgment based on personal experience, and Muller also gives examples of when metrics have been beneficial.

Complete with a checklist of when and how to use metrics, The Tyranny of Metricsis an essential corrective to a rarely questioned trend that increasingly affects us all.

"The Tyranny of Metrics is an important and accessible book about a growing problem. It comes as close as anything I've read to showing us how to break out of the dysfunctional cycle of measuring, finding out that measuring doesn't get us where we want to go, but then measuring some more."—David Chinitz, School of Public Health, Hebrew University Hadassah Medical School

"Broad in scope and ambition, persuasively argued, and engagingly written, The Tyranny of Metrics is a very compelling book."—Mark Schlesinger, Yale University

"In The Tyranny of Metrics, Jerry Muller has brought to life the many ways in which numerical evaluations result in deleterious performance: in our schools, our universities, our hospitals, our military, and our businesses. This book addresses a major problem."—George A. Akerlof, Nobel Prize–winning economist

Many of us have the vague sense that metrics are leading us astray, stripping away context, devaluing subtle human judgement, and rewarding those who know how to play the system. Muller’s book crisply explains where this fashion came from, why it can be so counterproductive and why we don’t learn. It should be required reading for any manager on the verge of making the Vietnam body count mistake all over again.---Tim Harford, Financial Times

Economic historian Jerry Muller delivers a riposte to bean counters everywhere with this trenchant study of our fixation with performance metrics.---Barbara Kiser, Nature

"Quantification, once only a tool, has become a cult. I can think of no better deprogrammer than Jerry Muller, whose renowned skills in dissecting political and social doctrines are evident here. The Tyranny of Metrics should be essential reading for managers and the managed alike."—Edward Tenner, author of The Efficiency Paradox: What Big Data Can't Do and Why Things Bite Back: Technology and the Revenge of Unintended Consequences

"Have you ever wondered why universities make the mistake of hiring presidents with little or no experience in higher education, or why, nine times out of ten, these foreign imports fail? Then read Jerry Muller's new book and you will understand such folly as one more instance of an unhappy, massive trend—abandoning the situated judgment of experienced professionals in favor of the supposedly objective judgment promised (but not delivered) by the magic bullet of metrics: standardized measures and huge data banks touted as generating insight and wisdom all by themselves. Muller dismantles this myth in a brisk and no-nonsense prose that has this reader crying ‘yes, yes' at every sentence."—Stanley Fish, author of Winning Arguments and Think Again

For every quantification, there's a way of gaming it. So argues this timely manifesto against measured accountability.