So what is affordance?
An affordance is created by JJ Gibson, it means that a quality of an object or an environment which allows an individual to perform an action.
Properties of Affordance?
- exists relative to the action capabilities of a particular actor.
- existence is independent of the actor's ability to perceive it.
- element of perceived: Context-where, Culture-society, Instince-unconscious and Mental model-expectation.
- door knobs are for.....?
- slots are for.....?
- balls are for.....?
The point of affordance is When it's taken advantage of , the user knows what to do just by looking at it ; no picture,label or instruction needed.
When we change the affordance, we must make sure that the changing is from the bad one to a better one.
Affordance in Graphic user interface
- important concept
- sliders and scroll bars afford dragging
- button drawn as 3D shape appear to "stick out" and afford pushing
How do affordances apply to robotics? How does a robot dog know what to do with a ball?
Perceived affordance
- coined by Donald Norman
- more interested in what the user perceived than what is actually true
- refers to perceived properties o the object that suggest how you/ the user could use it.
- Context (where)
- Culture (society)
- Instinct (unconcious)
- Mental models (expectations)
Design with intent - to guide users
- guiding user- what actions are possible
- product design
- design the system so that the right behavior before the user can take the next step.
- forces attention upon something and disrupts the efficient.
- eg.interlock, lock-in , lock- out
- All design is persuasive
- profitable to the client = profitable to user
- make profit but good for the users
- the user know what to do with the thing without any pictures, label or instruction.
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