Final answer:
A user-centered design approach is iterative and flexible, characterized by continuous refinement through prototyping and user testing. It does not adhere to a linear lifecycle model but rather follows a spiral process of incremental design improvements.
Step-by-step explanation:
A user-centered approach in design is characterized by several elements, but importantly, it does not use a linear lifecycle model to clearly delineate tasks. Instead, user-centered design practices are flexible and iterative. This means designs are continuously refined and improved as new information and feedback are obtained through stages like prototyping and user testing. The development process is more akin to a spiral than a linear path, allowing for the discovery of strengths and weaknesses that lead to incremental design improvements.
User performance measurements, iterative design processes, and a focus on the users' tasks and goals are all essential elements of a user-centered design approach. Methods like prototyping, design sessions, and gathering information from users are also integral parts of this process to ensure the final product meets the end-user needs effectively.