Designing for dynamic diversity: Interfaces for older people

In this paper, we describe why designers need to look beyond the twin aims of designing for the 'typical' user and designing "prostheses" Making accessible interfaces for older people is a unique but many-faceted challenge. Effective applications and interface design needs to address the dynamic diversity of the human species. We introduce a new design paradigm, Design for Dynamic Diversity, and suggest a methodology to assist its achievement, User Sensitive Inclusive Design. To support our argument for a new form of design we report experimentation, which indicates that older people have significantly different and dynamically changing needs. We also put forward initial solutions for Designing for Dynamic Diversity, where memory, vision and confidence provide the parameters for discussion, and illustrate the importance of User Sensitive Inclusive Design in establishing a framework for the operation of Design for Dynamic Diversity.