01 / THE IDEA
What does it mean?
The System Usability Scale is a ten-item questionnaire used after interaction to capture people's perception of a system's usability.
02 / IN PRACTICE
Make it concrete.
Illustrative example: After testing a scheduling tool, participants answer the SUS questions to provide a comparable usability measure.
03 / WHAT TO WATCH FOR
A common mistake.
Using SUS as a substitute for watching where people struggled.
04 / WHEN IT HELPS
When should you use it?
When you need a consistent perceived-usability measure across versions.
05 / FURTHER READING
Explore the source.
John Brooke — System Usability Scale ↗A reference for further learning, not an endorsement or verbatim quotation.