TY  - BOOK
AU  - Tullis,Tom
AU  - Albert,Bill
TI  - Measuring the user experience: collecting, analyzing, and presenting usability metrics 
T2  - Morgan Kaufmann series in interactive technologies
SN  - 0123735580
AV  - QA76.9.U83 T95 2008
U1  - 303.4834 22
PY  - 2008///]
CY  - Amsterdam, Boston
PB  - Elsevier/Morgan Kaufmann
KW  - User interfaces (Computer systems)
KW  - Measurement
KW  - Technology assessment
N1  - Includes bibliographical references and index; Introduction --; Background: Data Types --; Sampling Size --; Experimental Design --; Data Analysis. Overview of Usability Metrics: Types of Metrics --; Methods and Metrics --; Summative vs. Formative --; Choosing Appropriate Metrics. Performance Metrics: Task Success --; Completion Time --; Errors --; Efficiency (clicks, pages, steps, etc.). Issues-Based Metrics: What is a Usability Issue --; Severity Ratings --; Test Biases --; Reporting Positive Issues. Peferential-Based Metrics: Satisfaction --; Ease of Use, Usefulness --; Expectations --; Standard Questionnaires. Web Navigation Metrics: Web-page Click-through Rates --; Web page Abandonment Rates. Derived Metrics: Task-based --; Aggregate. Observational Metrics: Eye Movements --; Stress --; Facial Expressions --; Other Observational Metrics. Case Studies. Special Topics: Six Sigma and Usability --; Automated Methods --; Discount Techniques --; Server Log Analysis --; A /B Testing. Conclusion: Communication to Management --; Cost Justification --; Industry Trends
ER  -