What Does Usability Mean: Looking Beyond 'Ease of Use'

摘要

The definition of usability is sometimes reduced to "easy to use," but this over-simplifies the problem and provides little guidance for the user interface designer. A more precise definition can be used to understand user requirements, formulate usability goals and decide on the best techniques for usability evaluations. An understanding of the five characteristics of usability - effective, efficient, engaging, error tolerant, easy to learn - helps guide the user-centered design tasks to the goal of usable products.