"If Tom and Bill could convince me, perhaps the worlds biggest fan of qualitative testing, that usability metrics are really valuable-which they have, in this wonderful book-then theres no doubt theyll convince you. I loved reading this book, because it was exactly like having a fascinating conversation with a very smart, very seasoned, and very articulate practitioner. They tell you everything you need to know (and no more) about all the most useful usability metrics, explain the pros and cons of each one (with remarkable clarity and economy), and then reveal exactly how they actually use them after years and years of real world experience. Invaluable!" Steve Krug, author of Dont Make Me Think: A Common Sense Approach to Web Usability

"This book is a great resource about the many ways you can gather usability metrics without busting your budget. If youre ready to take your user experience career to the next level of professionalism, Tullis and Albert are here for you and share generously of their vast experience. Highly recommended." Jakob Nielsen, Principal, Nielsen Norman Group, author of Usability Engineering and Eyetracking Web Usability

"If you do any type of usability testing, you need this book. Tullis and Albert have written a clear and comprehensive guide with a common-sense approach to usability metrics." Ginny Redish, President of Redish and Associates, Inc., author of Letting Go of the Words

The first practical, detailed instructions on how to measure improved usability for the web, web-based applications, and electronic products of all kinds.