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Human Computer Interaction - Essay Example
This paper will discuss about the various stages involved in evaluating a User Interface design for a system that will be used by University RACs. The paper will talk in detail of the various stages that are listed below. Task analysis analyses what a user is required to do in terms of actions and/or cognitive processes to achieve a task. …
This task analysis provides structure for the concise, unambiguous description of the tasks performed to accomplish a goal, which then makes it easier to describe the user’s actions, and to explore the implications of this for the design of the products. Task Analysis provides the foundational information about how people carry out tasks so that a wide variety of disciples can apply their expertise effectively to the design of the system.
This report makes a conclusion that the most basic distinction is between a quantitative or qualitative evaluation. In a quantitative evaluation, the purpose is to come up with some objective metric of human performance that can be used to compare interaction phenomena. This can be contrasted with a qualitative evaluation, in which the purpose is to derive deeper understanding of the human interaction experience. A typical example of a quantitative evaluation is the empirical user study, a controlled experiment in which some hypothesis about interaction is tested through direct measurement. A typical example of a qualitative evaluation is an open-ended interview with relevant users. The author talks that the cognitive walkthrough was developed as an additional tool in usability engineering, to give design teams a chance to evaluate early mockups of designs quickly. It does not require a fully functioning prototype, or the involvement of users. Instead, it helps designers to take on a potential users perspective, and therefore to identify some of the problems that might arise in interactions with the system. ...