1 itm 734 introduction to human factors in information systems cindy corritore [email protected]...
TRANSCRIPT
1
ITM 734Introduction to Human Factors in Information Systems
Cindy [email protected]
This material has been developed by Georgia Tech HCI faculty, and continues to evolve.
Norman: Chapters 1 - 3
ITM 734 (Corritore) 2
What are Normans big five principles of design?
My Fat Cat Ate Veggies
ITM 734 (Corritore) 3
What are Normans big five principles of design?
My Fat Cat Ate Veggies
Mapping ….
ITM 734 (Corritore) 4
What are Normans big five principles of design?
My Fat Cat Ate Veggies
Mapping …. canmatch what you want to do to what’s apparently possible
- visible set of possible actions
ITM 734 (Corritore) 5
What are Normans big five principles of design?
My Fat Cat Ate Veggies
Mapping example: just want to print
ITM 734 (Corritore) 6
What are Normans big five principles of design?
My Fat Cat Ate Veggies
Mapping example: just want to print
ITM 734 (Corritore) 7
What are Normans big five principles of design?
My Fat Cat Ate Veggies
Feedback …
ITM 734 (Corritore) 8
What are Normans big five principles of design?
My Fat Cat Ate Veggies
Feedback …something visible happens when an action is taken
- show state of the system
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What are Normans big five principles of design?
My Fat Cat Ate Veggies
Feedback example: cut highlighted text in Word – what happened to it?
- what is the novice solution?
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What are Normans big five principles of design?
My Fat Cat Ate Veggies
Conceptual Model example - Touchgraph
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What are Normans big five principles of design?
My Fat Cat Ate Veggies
Affordances ….
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What are Normans big five principles of design?
My Fat Cat Ate Veggies
Affordances …. perceived and actual properties of a thing
Affordances
This interface has become second nature for us
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> Clicking while the mouse cursor is on an image on the screen does something particular
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What are Normans big five principles of design?
My Fat Cat Ate Veggies
Visibility…
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What are Normans big five principles of design?
My Fat Cat Ate Veggies
Visibility… make relevant parts visible
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What are Normans big five principles of design?
My Fat Cat Ate Veggies
Visibility… example
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A fun source ….
Web Pages that Suck - http://www.webpagesthatsuck.com/
Other Norman say-isms
• What is paradox of technology?
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Other Norman say-isms
• What is paradox of technology?
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complex
simple
Other Norman say-isms
• In Ch 2 Norman talks about what people do Falsely blame themselves for errors Want to explain things (mental model) even
in face of poor model Attribute own problems to environment,
other peoples’ problems to their personality Learned helplessness – tried, failed, won’t
try again
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Other Norman say-isms
• Steps of Action
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Other Norman say-isms
• Steps of Action Execution aspect:vague goal > intention > plan > execution Evaluation aspect:perceive world > interpret > eval outcome
> reached goal
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Other Norman say-isms
• Imprecise knowledge > precise behavior – how? (Ch 3)
• What is Memory in the world? What is its’ benefit?
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• Compare: http://www.kartoo.com tohttp://www.touchgraph.com/TGGoogleBrowser.html
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