Beyond the NPS: Measuring Perceived Usability with the SUS, NASA-TLX, and the Single Ease Question After Tasks and Usability...
lydia white

During usability testing, UX researchers often ask participants to provide a subjective assessment (usually in the form of a rating) of their experience using a product or a site. Instruments such as the SUS, NPS, or the task-difficulty question are among the most popular choices.