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Measuring the User Experience
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.
CONTENTS:
CHAPTER 1 Introduction
1.1 Organization of This Book
1.2 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 Metrics
CHAPTER 2 Background
2.1 Designing a Usability Study
2.2 Types of Data
2.3 Metrics and Data
2.4 Descriptive Statistics
2.5 Comparing Means
2.6 Relationships between Variables
2.7 Nonparametric Tests
2.8 Presenting Your Data Graphically
2.9 Summary
CHAPTER 3 Planning a Usability Study
3.1 Study Goals
3.2 User Goals
3.3 Choosing the Right Metrics: Ten Types of Usability Studies
3.4 Other Study Details
3.5 Summary
CHAPTER 4 Performance Metrics
4.1 Task Success
4.2 Time-on-Task
4.3 Errors
4.4 Efficiency
4.5 Learnability
4.6 Summary
CHAPTER 5 Issues-Based Metrics
5.1 Identifying Usability Issues
5.2 What Is a Usability Issue?
5.3 How to Identify an Issue
5.3.1 In-Person Studies
5.4 Severity Ratings
5.5 Analyzing and Reporting Metrics for Usability Issues
5.6 Consistency in Identifying Usability Issues
5.7 Bias in Identifying Usability Issues
5.8 Number of Participants
5.9 Summary
CHAPTER 6 Self-Reported Metrics
6.1 Importance of Self-Reported Data
6.2 Collecting Self-Reported Data
6.3 Post-Task Ratings
6.4 Post-Session Ratings
6.5 Using SUS to Compare Designs
6.6 Online Services
6.7 Other Types of Self-Reported Metrics
6.8 Summary
CHAPTER 7 Behavioral and Physiological Metrics
7.1 Observing and Coding Overt Behaviors
7.2 Behaviors Requiring Equipment to Capture
7.3 Summary
CHAPTER 8 Combined and Comparative Metrics
8.1 Single Usability Scores
8.2 Usability Scorecards
8.3 Comparison to Goals and Expert Performance
8.4 Summary
CHAPTER 9 Special Topics
9.1 Live Website Data
9.2 Card-Sorting Data
9.3 Accessibility Data
9.4 Return-on-Investment Data
9.5 Six Sigma
9.6 Summary
CHAPTER 10 Case Studies
10.1 Redesigning a Website Cheaply and Quickly, Hoa Loranger
10.2 Usability Evaluation of a Speech Recognition IVR, James R. Lewis
10.3 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 Whitby
10.5 Measuring the Effects of Drug Label Design and Similarity on Pharmacists? Performance, Agnieszka Bojko
10.6 Making Metrics Matter, Todd Zazelenchuk
10.6.7 Acknowledgment
10.6.8 Biography
10.6.9 References
CHAPTER 11 Moving Forward
11.1 Sell Usability and the Power of Metrics
11.2 Start Small and Work Your Way Up
11.3 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 Business
11.8 Show Your Confidence
11.9 Don?t Misuse Metrics
11.10 Simplify Your Presentation
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