This is a short description of CPM GOMS Model of HCI

2. At the end of this session, you will be able to:
List the variants of GOMS Model
Explain CPM – GOMS Model in your own words
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3. Used by software designers to analyze user
behaviour
Analysed in terms of
› Goals,
› Operators,
› Methods and
› Selection rules
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4. Keystroke Level Model (KLM)
Card, Morn, and Newell GOMS (CMN-GOMS)
Natural GOMS Language (NGOMSL)
Cognitive-Perceptual-Motor GOMS (CPM-GOMS)
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5. CPM-GOMS was developed in 1988 by Bonnie
John
Based on Card, Moran, & Newell (1983) Model
Human Processor.
Perceptual, cognitive and motor operators
(actions) can be performed in parallel.
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6. 1
• Cognitive processes are not always sequential
2
• Eg: Clerks imprinting checks often realize an
error two checks past
3
• Eg: When typing, you often realize an error while
typing the next sentence or letters
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8. Models multitasking behavior that can be
exhibited by experienced users.
CPM-GOMS assumes as many operations as
possible will happen at any given time
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9. THANK YOU!
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