Which aspect is NOT typically assessed during usability testing?

Usability testing is primarily focused on evaluating the user experience with a system, application, or product. The primary objectives of usability testing include assessing how easily and effectively users can interact with the user interface, complete tasks, and express their level of satisfaction with the overall experience.

User interface design quality is often scrutinized during usability testing, as testers observe how intuitive and user-friendly the design is. Similarly, user task completion rates are a key metric tracked in usability assessments, as they reflect how efficiently users can achieve their goals using the product. Overall user satisfaction is also a crucial aspect evaluated through surveys or direct feedback, highlighting how well the product meets user needs and expectations.

In contrast, software compatibility typically pertains to how well software functions across different platforms, operating systems, and devices. This assessment is more relevant during the quality assurance phase or functional testing of software rather than usability testing. Usability testing specifically concentrates on the human factors of interacting with the software, rather than technical compatibility issues. Thus, it is accurate to say that software compatibility is not a typical focus of usability assessment.