Brugergrænseflader til apparater BRGA. Presentation 3: Cognitive Psychology & usable methods. Outline. The Psychology of HCI Human Cognition Human senses, perception, memory, and interruptions Mental models, metaphors, and perceived affordance
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& usable methods
We see two triangles.
We see three groups of paired square brackets.
We see curves AB and CD, not AC and DB, and not AD and BC
We see two rows of circles, not two L-shaped groups
All are seen as circles
We get bombarded with sensor input constantly
Practice and effort needed
to make this transfer
< 0.1 second Seems instantaneous
< 1 sec Notices delay, but does not lose thought
> 10 sec Switches to another task
Carelmans Coffepot for Masochists
Top switch controls top lights
By convention, with a light switch “up” is “on”