User-centered design (UCD) or pervasive usability is a design philosophy and a process in which the needs, wants, and limitations of end users of a product are given extensive attention at each stage of the design process. User-centered design can be characterized as a multi-stage problem solving process that not only requires designers to analyze and foresee how users are likely to use a product, but also to test the validity of their assumptions with regards to user interaction in real world tests with actual users. Such testing is necessary as it is often very difficult for the designers of a product to understand intuitively what a first-time user of their design experiences, and what each user's learning curve may look like.
UCD seeks to answer questions about users and their tasks and goals, then use the findings to drive development and design.
UCD seeks to answer questions such as:
Who are the users of this 'thing'?
What are the users’ tasks and goals?
What are the users’ experience levels with this thing, and things like it?
What functions do the users need from this thing?
What information might the users need, and in what form do they need it?
How do users think this 'thing' should work?
How can the design of this ‘thing’ facilitate users' cognitive processes?
UCD can improve the usability and usefulness of everything from "everyday things" (D. Norman) to software to information systems to processes. . . anything with which people interact. As such, User-Centered Design concerns itself with both usefulness and usability.
*User-Centered Design has cuts costs and increases user satisfaction and productivity.
ABDUL HADI BIN ABDUL HARIS
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