![]() ![]() For others, it remains important, but only as one of several key concerns for interaction design. For some, it was and remains HCI’s core concept. Usability has been a fundamental concept for Interaction Design research and practice, since the dawn of Human-Computer Interaction (HCI) as an inter-disciplinary endeavour. 15.1 From First World Oppression to Third World Empowerment ![]() We may have to close some doors here, but in doing so, we will be better equipped to open new ones, and even go through them. ![]() As with any intellectual endeavour, we should proceed with an open mind, and acknowledge that not only are some or all of the above propositions not true, but that they can never be so. Where there are still gaps between ideals and realities, we need to understand how methods and metrics can be improved to close this gap. We need to understand where current research and practice fall short of this ideal, and to what extent. The above propositions represent an ideal. People wishing to develop expertise in usability measurement and evaluation can read about these methods, learn how to apply them, and become proficient in determining whether or not an interactive system or device is usable, and if so, to what extent. Where a system or device is usable, usability evaluation methods also determine the extent of its usability, through the use of robust, objective and reliable metricsĮvaluation methods and metrics are thoroughly documented in the Human-Computer Interaction research and practitioner literature. Human-Computer Interaction researchers and Interaction Design professionals have developed evaluation methods that determine whether or not an interactive system or device is usable. Usability is an inherent measurable property of all interactive digital technologies Things aren’t this simple at all though, but let’s start by considering the following propositions about usability evaluation: Put simply, usability evaluation assesses the extent to which an interactive system is easy and pleasant to use. ![]()
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