In: Computer Science
Create your OWN GOMS technique model. (Goals, operators, methods and selection)
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