Design rules

Design rules
•Design rules (or usability rules) are rules that a designer can follow in order to increase the usability of the system/product e.g., principles, standards, guidelines. Design rules should be used early in the lifecycle [e.g., during the design; furthermore, they can also be used to evaluate the usability of the system] .
•Principles (e.g. interface should be easy to navigate) Abstract and have high generality & low in authority.
•Guidelines (e.g. use color to highlight links) Can guide/advise on how achieve a principle Narrowly focused.
•Standards (e.g. use color RGB #1010D0 on home links) which are very specific & high in authority.

design rules
Designing for maximum usability – the goal of interaction design
•Principles of usability
ogeneral understanding
•Standards and guidelines
odirection for design
•Design patterns
ocapture and reuse design knowledge


types of design rules
• principles
o abstract design rules
o low authority
o high generality
• standards
o specific design rules
o high authority
o limited application
• guidelines
o lower authority
o more general application