iSQI Exam CPUX-F Topic 4 Question 61 Discussion

Dialogue principles and user interface guidelines are rules, of varying levels of specificity, used to guide the design of the interaction (see section 6). They are intended to make the interaction effective, efficient and satisfying, to avoid common usability problems and to ensure a consistent user interface.

Dialogue principles and heuristics are general guidance for the design of usable dialogues. There are seven dialogue principles; examples of dialogue principles are conformity with user expectations and error tolerance. Dialogue principles are not bound to any specific technology or method.

The concepts of affordance and mental model supplement the dialogue principles. Affordance is an aspect of an object that makes it obvious how the object could be used. A mental model is the perception people have of themselves and of the things with which they interact.