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INDE/TC 455:User Interface DesignModule 9.0- Design Considerations
User Interface Design Considerations
TOOLHUMAN
TASK
= Information Path
Metrics
= Influence Path
Environment
Furness ‘boxkite’ model
Human Interface Model --Level 0
HUMAN PROCESSES MACHINE PROCESSES
Human Interface Model --Level 1
HUMAN PROCESSES
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SIGNALTRANSFER
DIRECT PATH
Levels of Interface• Signal Level
– Transfer of physical signals across machine andhuman boundaries
Human Interface Model --Level 2
HUMAN PROCESSES
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SIGNALTRANSFER
DIRECT PATH
USERMODEL OFMACHINE
DESIGNERMODEL OF
USER &MACHINEINDIRECT PATH
A PRIORIKNOWLEDGE
TRAINING
EXPERIENCE EXPERIENCE
META COMMUNICATION
Human Interface Model --Level 3
HUMAN PROCESSES
CO
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TUA
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SEN
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MACHINE PROCESSES
PRO
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SIN
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SIGNALTRANSFER
DIRECT PATH
USERMODEL OFMACHINE
DESIGNER MODEL OF
USER MACHINEINDIRECT PATH
A PRIORIKNOWLEDGE
TRAINING
EXPERIENCE EXPERIENCE
META COMMUNICATION
TASK
Levels of Interface• Signal Level
– Transfer of physical signals across machine and humanboundaries
• Meta (model) Level– Communication between user (participant) and designer
models• Use the Persona as a ‘typical' user
Where is the interface?
Human Interface Model --Level 3
HUMAN PROCESSES
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MACHINE PROCESSES
PRO
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SIN
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PRO
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AM
MIN
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SIGNALTRANSFER
DIRECT PATH
USERMODEL OFMACHINE
DESIGNER MODEL OF
USER MACHINEINDIRECT PATH
A PRIORIKNOWLEDGE
TRAINING
EXPERIENCE EXPERIENCE
META COMMUNICATION
TASK
indirect
direct
What are the interfaces in the‘interface’ ?
• Human– Transduction
• Senses• Motor
– Perception– Cognition– Model building– Task manipulation
via machine
• Machine– Transduction
• Displays• Controls
– Signal processing– Programming– Tool building– Task manipulation
Human Interface Model --Level 3
HUMAN PROCESSES
CO
GN
ITIV
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PER
CEP
TUA
L
SEN
SOR
YPS
YCH
OM
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R
DIS
PLA
YC
ON
TRO
L IN
PUT
MACHINE PROCESSES
PRO
CES
SIN
G
PRO
GR
AM
MIN
G
SIGNALTRANSFER
DIRECT PATH
USERMODEL OFMACHINE
DESIGNER MODEL OF
USER MACHINEINDIRECT PATH
A PRIORIKNOWLEDGE
TRAINING
EXPERIENCE EXPERIENCE
META COMMUNICATION
TASK
Other Models• Human Information Processing Model -- Wellford (1960)
• Four Level Approach -- Foley and Wallace (1974)
• Goals, Operators, Methods, and Selected Rules (GOMS)--Card, Moran & Newell (1980, 1983)
• Seven Stages of Action -- Norman (1988)
Human Information ProcessingModel
Sensing
Information Processing
PsychomotorPerformance
Operator
Display
Machine
Control
Human-Machine Systems
From: J.C. Woldstad - Oregon State University
Cycle of Human Factors
From: J.C. Woldstad - Oregon State University
Seven Stages of Action -- Norman(1988)
Gulfs
• gulf of execution- how well system allows person to
perform intended action• gulf of evaluation
- effort of interpreting the physical stateand how well expectations and intentionsare met
The seven stages of action asdesign aids
• Visibility- state of device, alternatives for action
• Good conceptual model- consistency of operations, system image
• Good mappings- action/result, control/effect, system
function/visible structure• Feedback
Human Factors Topics
From: J.C. Woldstad - Oregon State University
Related Disciplines
From: J.C. Woldstad - Oregon State University
