MeasuringU

Three Branches of Standardized UX Measurement

By Jim Lewis, PhD and Jeff Sauro, PhD . January 28, 2020 . Tags: TAM, SUPR-Q, Questionnaires, User Research, SUS

We write extensively about standardized UX metrics such as the SUS, PSSUQ, and SUPR-Q. The main benefits of standardization include improved reliability, validity, sensitivity, objectivity, quantification, economy, communication, and norms. Even when standardized UX questionnaires are developed independently, they are influenced by earlier work, just like how UX itself is a new field built upon earlier fields. The deep roots of questionnaire development date back over

10 Things to Know About the Post Study System Usability Questionnaire

By Jeff Sauro, PhD . December 17, 2019 . Tags: PSSUQ, CSUQ, Questionnaires, SUS

We’ve written extensively about the System Usability Scale (SUS). It’s the most widely used and cited questionnaire for measuring the perception of the user experience. But likely the second most widely used and cited questionnaire, with over 2,000 citations, is the Post Study System Usability Questionnaire (PSSUQ). It also goes by the name of Computer System Usability Questionnaire (CSUQ). MeasuringU Press is proud to have

Can UX Metrics Predict Software Revenue Growth?

By Jeff Sauro, PhD . January 15, 2019 . Tags: NPS, SUS

Does better usability lead to more revenue? What about positive word of mouth? Is it tied to revenue growth? Are UX metrics for usability and intent to recommend able to track future revenue growth? Many UX researchers who work for software companies or on software products collect UX metrics. In fact, we strongly advocate for it. As part of implementing a plan to improve UX,

Can You Use a Single Item to Predict SUS Scores?

By Jeff Sauro, PhD . December 4, 2018 . Tags: SUS

The System Usability Scale (SUS) has been around for decades and is used by hundreds of organizations globally. The 10-item SUS questionnaire is a measure of a user’s perception of the usability of a “system,” which can be anything from software, hardware, websites, apps, or voice interfaces. The items are: I think that I would like to use this system frequently. I found the system

5 Ways to Interpret a SUS Score

By Jeff Sauro, PhD . September 19, 2018 . Tags: SUS

The System Usability Scale (SUS) is a popular measure of perceived usability. It's a 10-item questionnaire scored on a 101-point scale and provides a measure of a user’s perception of the usability of a “system.” A system can be just about anything a human interacts with: software apps (business and consumer), hardware, mobile devices, mobile apps, websites, or voice user interfaces. By itself though, the

Interpreting Single Items from the SUS

By Jeff Sauro, PhD . July 10, 2018 . Tags: Usability, SUS

The System Usability Scale has been around for decades and is used by hundreds of organizations globally. The 10-item SUS questionnaire is a measure of a user’s perception of the usability of a “system.” A system can be just about anything a human interacts with: software apps (business and consumer), hardware, mobile devices, mobile apps, websites, or voice user interfaces. The SUS questionnaire is scored

Recent Advances with the System Usability Scale

By Jeff Sauro, PhD . November 7, 2017 . Tags: UMUX-lite, SUS

The System Usability Scale (SUS) is the most widely used questionnaire for measuring the perception of usability. It’s been around for more than 30 years. While its original term “system” has fallen somewhat out of favor, its usage has not—with thousands of citations in the literature. The system can be anything from business software, consumer software, websites, mobile apps, or hardware. With such wide usage

Measuring Usability: From the SUS to the UMUX-Lite

By Jeff Sauro, PhD . October 10, 2017 . Tags: UMUX-lite, Questionnaires, SUS

Many researchers are familiar with the SUS, and for good reason. It’s the most commonly used and widely cited questionnaire for assessing the perception of the ease of using a system (software, website, or interface). Despite being short—10 items—the SUS has a fair amount of redundancy given it only measures one construct (perceived usability). While some redundancy is good to improve reliability, shorter questionnaires are

Why the SUPR-Q is better than the SUS for websites

By Jeff Sauro, PhD . June 27, 2017 . Tags: SUPRQ, Benchmarking, SUS

When I started systematically measuring website usability over 10 years ago I started with the SUS as a key metric. The System Usability Scale (SUS) was the natural questionnaire to start with. It was then, as it is now, a popular 10-item questionnaire to measure the perceived usability of interfaces. It’s been around for over 30 years and because of the wording of the items

UX & NPS Benchmarks for Consumer Software (2017)

By Jeff Sauro, PhD . June 20, 2017 . Tags: Net Promoter Score, Loyalty, Benchmarking, SUS

Positive word of mouth is a critical driver of future growth for consumer software products. Along with features and capabilities, user experience is a key determinant of how likely users adopt new technology and recommend software. We’ve found that usability accounts for between 30% and 60% of the variation in Net Promoter Scores. A positive experience leads customers to recommend a product. A negative experience,

SUS

by Jim Lewis, PhD and Jeff Sauro, PhD | January 28, 2020

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Three Branches of Standardized UX Measurement

By Jim Lewis, PhD and Jeff Sauro, PhD . January 28, 2020 . Tags: TAM, SUPR-Q, Questionnaires, User Research, SUS

10 Things to Know About the Post Study System Usability Questionnaire

By Jeff Sauro, PhD . December 17, 2019 . Tags: PSSUQ, CSUQ, Questionnaires, SUS

Can UX Metrics Predict Software Revenue Growth?

By Jeff Sauro, PhD . January 15, 2019 . Tags: NPS, SUS

Can You Use a Single Item to Predict SUS Scores?

By Jeff Sauro, PhD . December 4, 2018 . Tags: SUS

5 Ways to Interpret a SUS Score

By Jeff Sauro, PhD . September 19, 2018 . Tags: SUS

Interpreting Single Items from the SUS

By Jeff Sauro, PhD . July 10, 2018 . Tags: Usability, SUS

Recent Advances with the System Usability Scale

By Jeff Sauro, PhD . November 7, 2017 . Tags: UMUX-lite, SUS

Measuring Usability: From the SUS to the UMUX-Lite

By Jeff Sauro, PhD . October 10, 2017 . Tags: UMUX-lite, Questionnaires, SUS

Why the SUPR-Q is better than the SUS for websites

By Jeff Sauro, PhD . June 27, 2017 . Tags: SUPRQ, Benchmarking, SUS

UX & NPS Benchmarks for Consumer Software (2017)

By Jeff Sauro, PhD . June 20, 2017 . Tags: Net Promoter Score, Loyalty, Benchmarking, SUS