Occupational therapists modify mass-produced and universally-designed assistive technologies (ATs) to fulfill the specific needs of people with disabilities. We interviewed ten occupational therapists with experience in modifying ATs in order to understand adaptation processes. Our findings reveal the reasoning behind adaptation, common ATs that require adaptation, as well as the collaborative nature of adaptation. We propose a new framework called Adaptable Universal Design (AUD) that blends Universal Design with the need to adapt ATs in order to fulfill unique and specific user needs.

Hierarchies of knowledge represent a popular formalism for conceptualizing beliefs, justifications, and truth statements. To capitalize on the opportunity for formulating effective maps of design knowledge, this article introduces the hierarchical context–design development–high-level (CDH) model that stratifies different bodies of design-specific knowledge into ranked levels. We compare it with existing hierarchical models of knowledge, and describe its unique uses and benefits for both design research and design practice.

Figure 1. A partial screen capture of the DBL SmartCity user interface.

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