The Single Ease Question (SEQ) is a measure of perceived usability, which is used to evaluate the user experience of a website, application, or system. The SEQ is a single question that asks users to rate their overall ease of use of the system on a scale of 1-7, where 1 is “very difficult” and 7 is “very easy.”

The SEQ is a quick and easy to administer measure of usability, which can be used as a standalone measure or in conjunction with other measures such as the System Usability Scale (SUS) or the Task Performance Test (TPT). It is particularly useful for user research studies that have limited time and resources, or for monitoring usability over time.

The SEQ is typically administered at the end of a user testing or survey session, or after a user has had an opportunity to interact with the system. The scores for the SEQ can be collected and analyzed to determine the overall ease of use of the system, as well as to identify areas where users may have struggled.

It’s important to note that, like SUS, SEQ is a measure of perceived usability and doesn’t provide specific information of where the problems are. Therefore, it’s recommended to use the SEQ in conjunction with other usability methods like user testing, interviews, and surveys to get a more comprehensive picture of the user’s experience.