Measuring Usability
Quantitative Usability, Statistics & Six Sigma by Jeff Sauro

Keystroke Level Modeling

This analytic technique allows you to predict how long it will take experienced users to complete a task. The method uses Keystroke Level Modeling based on decades of research on how long it takes humans to interact with software.

This approach provides estimates of task times to within an accuracy of 10%. It is best used for getting measures of efficiency when comparing designs or competing products. Live code isnít needed, only sketches or screen shots can generate estimated times.

Clients get training in the method and access to a software application that will generate detailed estimates at the millisecond level. After just a couple hours of training, members of your organization (designers, product managers, researchers) will be generating accurate estimates.

For more background on using keystroke level modeling, see the paper Composite Operators for Keystroke Level Modeling.

Typical Engagement Price

$5,000 to $9,500

Selected Clients

Sage Software

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About Jeff Sauro

Jeff Sauro is the founding principal of Measuring Usability LLC, a company providing statistics and usability consulting to Fortune 1000 companies.
He is the author of over 20 journal articles and 4 books on statistics and the user-experience.
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Jeff's Books

Quantifying the User Experience: Practical Statistics for User ResearchQuantifying the User Experience: Practical Statistics for User Research

The most comprehensive statistical resource for UX Professionals

Buy on Amazon

Excel & R Companion to Quantifying the User ExperienceExcel & R Companion to Quantifying the User Experience

Detailed Steps to Solve over 100 Examples and Exercises in the Excel Calculator and R

Buy on Amazon | Download

A Practical Guide to the System Usability ScaleA Practical Guide to the System Usability Scale

Background, Benchmarks & Best Practices for the most popular usability questionnaire

Buy on Amazon | Download

A Practical Guide to Measuring UsabilityA Practical Guide to Measuring Usability

72 Answers to the Most Common Questions about Quantifying the Usability of Websites and Software

Buy on Amazon | Download

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