Question

In: Computer Science

Create your OWN GOMS technique model. (Goals, operators, methods and selection)

Create your OWN GOMS technique model. (Goals, operators, methods and selection)

Solutions

Expert Solution

What is a GOMS model?

• A description of the knowledge that a user must have in order to carry out tasks on a device or a system.

• A representation of the “how to do it” knowledge that is required by a system in order to get the intended tasks accomplished.

GOMS terminology

• Goals - what the user wants to accomplish

• Operators – the means that leads to a goal at a detailed level

• Methods - sequences of operators

• Selection rules – rules (general or personal) for choosing a certain method

Example

• Goal: Edit an article

• Operators – Use arrow keys – Use mouse – Use other keys

• Method: Delete text (sub-goal)

– Positioning: 1) arrow key 2) mouse

– Marking: 1) double click 2) use mouse

– Delete (and add text): 1) start writing 2) press delete, then write new text

• Selection rules: if close, use arrow key etc.

Fig:CPM - Cognitive Perceptual Motor


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