What does "learnability" assess in usability principles?

Learnability is a critical aspect of usability principles that focuses on how easily new users can understand and effectively use a system without extensive prior knowledge. In this context, the correct answer, which highlights the ease with which users can learn to use the system, underscores the importance of intuitive design and user-friendly interfaces that facilitate quick understanding and navigation for users.

By prioritizing learnability, systems can minimize the time required for users to become proficient, enhancing overall user satisfaction and encouraging ongoing engagement with the system. This is particularly vital in digital applications where users may have varying levels of experience and familiarity with technology.

Other options, while related to usability, do not capture the essence of learnability as effectively. For instance, memorization of features is not the main focus; instead, learnability pertains more to how easily these features can be grasped and utilized initially. Similarly, task completion time relates to efficiency rather than the learning process itself, and creativity in layout, while relevant to aesthetics and user experience, does not directly address the fundamental principle of learnability.