With a foreword by Steve Krug, author of Don't Make Me Think. "What makes so many products so difficult for the average person to use?" Carol Barnum posits this question in her introduction to this book. Too many perfectly functioning products are being returned because they are not usable. Strong usability testing is the key. But what do we do if under a strict budget and time constraints? How do we properly prepare, test, analyze, and measure across a multitude of cultures, generations, and countries? There are many different testing methods and numerous situations in which to test; however, all are grounded in the same basics of usability testing.Usability Testing Essentials presents a practical, step-by-step approach to learning the entire process of planning and conducting a usability test. It also explains how to analyze and apply the results and what to do when confronted with budgetary and time restrictions. This is the ideal book for anyone involved in usability or user-centered design-from students to seasoned professionals.*Provides a comprehensive, step by step to usability testing, a crucial part of every product's development*The fully-updated four color edition now features important usability issues such as international testing, persona creation, remote testing, and accessibility*Follow-up to Usability Testing and Research (9780205315192, Longman, 2001), winner of the highest-level award from the Society for Technical Communication *Presents a step-by-step approach to the entire process of planning and conducting a usability test--an essential component of designing usable products *Comprehensive coverage of one of the most important skills necesary for usability and user experience practioners, and the first book of its kind to include international testing *Follow-up to Usability Testing and Research, which won the highest-level award from the Society for Technical Communication, and is already listed among the most widely recommended books in the field.