Accessibility is the process of removing barriers to meet people’s access needs. It goes hand in hand with usability, affordability, availability, and overall good design. This article focuses specifically on visual barriers in typography.
Accessibility
The Controversy of Accessible Type
Knowledge
The 8 competencies of user experience: a tool for assessing and developing UX Practitioners
A UX practitioner demonstrates 8 core competencies. By assessing each team member's 'signature' in these eight areas, managers can build a fully rounded user experience team. This approach also helps identify the roles for which each team member is most suited alongside areas for individual development.
Craft, Leadership
The 8 competencies of user experience: a tool for assessing and developing UX Practitioners
Jakob Nielsen's 10 general principles for interaction design. They are called "heuristics" because they are broad rules of thumb and not specific usability guidelines.