Measuring the User Experience
Collecting, Analyzing, and Presenting Usability Metrics
By- William Albert, Director, Design and Usability Center, Bentley University, USA
- Thomas Tullis, Senior Vice President of User Experience, Fidelity Investments, USA
- William Albert, Director, Design and Usability Center, Bentley University, USA
Effectively measuring the usability of any product requires choosing the right metric, applying it, and effectively using the information it reveals. Measuring the User Experience provides the first single source of practical information to enable usability professionals and product developers to do just that. Authors Tullis and Albert organize dozens of metrics into six categories: performance, issues-based, self-reported, web navigation, derived, and behavioral/physiological. They explore each metric, considering best methods for collecting, analyzing, and presenting the data. They provide step-by-step guidance for measuring the usability of any type of product using any type of technology.
Audience
Usability professionals, developers, programmers, information architects, interaction designers, market researchers, and students in an HCI or HFE program.
Paperback, 336 Pages
Published: March 2008
Imprint: Morgan Kaufmann
ISBN: 978-0-12-373558-4
Contents
- CHAPTER 1 Introduction1.1 Organization of This Book1.2 What Is Usability? 1.3 Why Does Usability Matter? 1.4 What Are Usability Metrics? 1.5 The Value of Usability Metrics 1.6 Ten Common Myths about Usability MetricsCHAPTER 2 Background2.1 Designing a Usability Study2.2 Types of Data 2.3 Metrics and Data2.4 Descriptive Statistics 2.5 Comparing Means 2.6 Relationships between Variables2.7 Nonparametric Tests 2.8 Presenting Your Data Graphically2.9 SummaryCHAPTER 3 Planning a Usability Study3.1 Study Goals3.2 User Goals3.3 Choosing the Right Metrics: Ten Types of Usability Studies3.4 Other Study Details 3.5 SummaryCHAPTER 4 Performance Metrics4.1 Task Success4.2 Time-on-Task4.3 Errors 4.4 Efficiency 4.5 Learnability 4.6 SummaryCHAPTER 5 Issues-Based Metrics5.1 Identifying Usability Issues5.2 What Is a Usability Issue?5.3 How to Identify an Issue5.3.1 In-Person Studies5.4 Severity Ratings 5.5 Analyzing and Reporting Metrics for Usability Issues5.6 Consistency in Identifying Usability Issues5.7 Bias in Identifying Usability Issues5.8 Number of Participants5.9 SummaryCHAPTER 6 Self-Reported Metrics6.1 Importance of Self-Reported Data6.2 Collecting Self-Reported Data6.3 Post-Task Ratings6.4 Post-Session Ratings6.5 Using SUS to Compare Designs6.6 Online Services6.7 Other Types of Self-Reported Metrics 6.8 SummaryCHAPTER 7 Behavioral and Physiological Metrics 7.1 Observing and Coding Overt Behaviors7.2 Behaviors Requiring Equipment to Capture 7.3 SummaryCHAPTER 8 Combined and Comparative Metrics8.1 Single Usability Scores8.2 Usability Scorecards 8.3 Comparison to Goals and Expert Performance8.4 SummaryCHAPTER 9 Special Topics9.1 Live Website Data9.2 Card-Sorting Data 9.3 Accessibility Data 9.4 Return-on-Investment Data9.5 Six Sigma9.6 SummaryCHAPTER 10 Case Studies10.1 Redesigning a Website Cheaply and Quickly, Hoa Loranger10.2 Usability Evaluation of a Speech Recognition IVR, James R. Lewis10.3 Redesign of the CDC.gov Website Robert Bailey, Cari Wolfson, and Janice Nall 10.4 Usability Benchmarking: Mobile Music and Video, Scott Weiss and Chris Whitby10.5 Measuring the Effects of Drug Label Design and Similarity on Pharmacists Performance, Agnieszka Bojko10.6 Making Metrics Matter, Todd Zazelenchuk 10.6.7 Acknowledgment10.6.8 Biography 10.6.9 ReferencesCHAPTER 11 Moving Forward11.1 Sell Usability and the Power of Metrics 11.2 Start Small and Work Your Way Up11.3 Make Sure You Have the Time and Money 11.4 Plan Early and Often .11.5 Benchmark Your Products .11.6 Explore Your Data 11.7 Speak the Language of Business11.8 Show Your Confidence11.9 Dont Misuse Metrics 11.10 Simplify Your Presentation
