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Usage-centered design
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<p>Usage-centered design is an approach to <a href="/facts/User_interface_design/bHpLP1ae">user interface design</a> based on a focus on user intentions and usage patterns. It analyzes users in terms of the roles they play in relation to systems and employs abstract (essential) <a href="/facts/Use_Case/8pNHjsIr">use cases</a> for <a href="/facts/Task_analysis/LzaFdGBP">task analysis</a>. It derives visual and <a href="/facts/Interaction_design/6aKgJFNW">interaction design</a> from abstract <a href="/facts/Software_prototyping/cLqGURoM">prototypes</a> based on the understanding of user roles and task cases. </p><p>Usage-centered design was introduced by <a href="/facts/Larry_Constantine/advmm0KF">Larry Constantine</a> and Lucy Lockwood. The primary reference is their book. </p>