12. cognitive models

EXERCISE 12.4 [extra - not in book]

What is the main contribution of cognitive models? What are their limitations and how can they help interface designers?

answer available for tutors only

The main contribution of cognitive models is as a predictive model of interactive behaviour - they can be used to predict how a user will perform with an interface. They are limited in that they focus primarily on cognitive processes, taking little account of context. The user is generic and (usually) assumed error-free. Tasks are low level - often unit tasks. They can be useful in comparing low level activities, for example different ways to perform a task, and can be used to predict which will be most efficient

Other exercises in this chapter

ex.12.1 (ans), ex.12.2 (ans), ex.12.3 (tut), ex.12.4 (tut), ex.12.5 (tut)

all exercises for this chapter