Norman, Chapter 2 Flashcards
Gulf of Execution
When we try to figure out how something operates
Gulf of Evaluation
When we try to figure out /evaluate what happened
— what went right or wrong.
What could be done different?
The role of the designer is help bridge the gap between the gulf of executions and the gulf of evacuation.
What are the major design elements that help bridge the gulf of evaluation?
Feedback and a good conceptual model
The role of the designer is help bridge the gap between the gulf of executions and the gulf of evacuation.
How do we bridge gulf of execution?
Through the use of
signifiers, constraints, mappings, conceptual models
Seven Stages of Action:
- Goal (form the goal)
Three Execution Stages:
- Plan (the action)
- Specify ( an action sequence)
- Perform (the action sequence)
Three Evaluation Stages:
- Perceive (the state of the world)
- Interpret (the perception)
- Compare (the outcome with the goal)
Subconscious
fast, automatic, uses multiple resources, controls skilled beaviour
Conscious
slow, controlled, limited resources, invoked for novel situations, when in danger, when tings for wrong
Three levels of processing
Visceral (subconscious) - lizard brain
Behavioral (subcounsious)
Reflective(conscious)
Reflective Level -
conscious cognition where
reasoning & decision making take place
emotions associated with this level:
guilt, pride, blame, praise, fondness
Three levels of reflective level (low to high)
Low level – calmness or anxiety
Middle level – relief or despair
High level – either satisfaction and pride or blame and anger
Substitute word for “failure”
learning experience
6 tips/advices for designers
of products and services
-do not blame people when they fail to use your product properly
-take people’s difficulties as signifiers or where the product can be imporoved
-eliminate all error messages from electronic or computer systems. Provide help & guide instead.
-make it possible to correct problems directly from help and guidance
assume tat was people ave done is partially correct, so if -it is inappropriate, provide the guidance tat allows them to correct the problem and be on their way
-think positively, for yourself and for the people you interact with
Human advantages over machines
flexibility, creativity, coming up with solutions to novel problems
Machine advantages
precision and accuracy
Seven Stages of Action
- What do I want to accomplish?
- What are the alternative action sequences?
- What action can I do now?
- How do I do it?
- What happened?
- What do it mean?
- Is this ok? Have I accomplished my goal?