A new approach—applying the theory of usable access to accessible product design
A product may be accessible – meeting all the criteria and requirements in all the accessibility standards and guidelines – but, people with disabilities may still not be able to use it. More to the point, they may not be able to use that accessible item to be competitively productive with non-disabled people.
Incorporating people with disabilities into user-centered design practices helps to ensure a level of usability for people with disabilities (usable access) that enables them to be competitively productive. However, this is often not feasible because of cost or other factors.
A common software engineering practice can help solve 90% of the problem with 10% of the effort. This is the practice of piecing together commonly recognized, and sometimes proven, design patterns or conventions - this could be called design by convention or heuristic UI design.
Read about known conventions that are particularly beneficial to usable access and accessibility.