UMUX-lite

by Jeff Sauro, PhD | May 7, 2019

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10 Things to Know about the Technology Acceptance Model

By Jeff Sauro, PhD . May 7, 2019 . Tags: UMUX-lite, UX

A usable product is a better product. But even the most usable product isn’t adequate if it doesn’t do what it needs to. Products, software, websites, and apps need to be both usable and useful for people to “accept” them, both in their personal and professional lives. That’s the idea behind the influential Technology Acceptance Model (TAM). Here are 10 things to know about the TAM.

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