Look into the most used questionnaires, e.g. QUIS, SUMI, PSSUQ and SUS, for post-test usability testing. — In this article, I will delve into summative usability questionnaires. But first, let me explain the types of usability testing. When discussing usability, it is important to distinguish between the goal and practice of formative and summative usability testing. Formative vs Summative Usability Testing
