GOMS

GOMS

What:
An HCI task analysis method that reduces a user’s interaction to its most basic actions. Operators (steps that a user performs) combine to form Methods, which are used to achieve Goals. Selection Rules determine the proper Method, when more than one could be used.

Why:
Quantitatively, GOMS gives good predictions of performance time and learning. Qualitatively, a GOMS model is a description of the knowledge needed to perform a given task, essentially describing the content needed for task-oriented documentation.

Resources:
The late Jef Raskin describes GOMS in Chapter 4 of his book The Humane Interface.



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