sbd: activity design chris north cs 3724: hci. problem scenarios summative evaluation information...
TRANSCRIPT
SBD:Activity Design
Chris North
CS 3724: HCI
Problem scenarios
summativeevaluation
Information scenarios
claims about current practice
analysis ofstakeholders,field studies
Usability specifications
Activityscenarios
Interaction scenarios
iterativeanalysis ofusability claims andre-design
metaphors,informationtechnology,HCI theory,guidelines
formativeevaluation
DESIGN
ANALYZE
PROTOTYPE & EVALUATE
Summaries: stakeholder, task, and artifact analyses, general themes
Root concept: vision, rationale,assumptions, stakeholders
Problem scenarios:illustrate and put into context the tasks and themes discovered in
the field studies
Claims analysis:find and incorporate features of practice
that have key implications for use
Field studies: workplace observations,recordings, interviews, artifacts
SBD andRequirementsAnalysis
Problem scenarios
summativeevaluation
Information scenarios
claims about current practice
analysis ofstakeholders,field studies
Usability specifications
Activityscenarios
Interaction scenarios
iterativeanalysis ofusability claims andre-design
metaphors,informationtechnology,HCI theory,guidelines
formativeevaluation
DESIGN
ANALYZE
PROTOTYPE & EVALUATE
Function-ality
Look and feel
Problem scenarios: work from current practice to build new ideas
Activity design scenarios:transform current activities to
use new design ideas
SBD: Activity Design
• Transform old activities to new activities that use technology
• Focus on system “what” not “how”
• “conceptual design”, “task-level design”
• Focus on improvements• Iterative
Goal: work from problems and opportunities of problem domain to envision new activities
Problem scenarios: work from current practice to build new
Activity design scenarios:transform current activities to
use new design ideas
Claims analysis: identify, illustrate, and document design features with key implications
Activity design space:
brainstorm implications of metaphors and
technology
Problem claims: look for design
ideas that address negatives, but keep positives
HCI knowledge
about activity design
SBD:ActivityDesign
+/-
+/-
Designer’s Model User’s Mental Model
Cashier
Systematic, logical,comprehensive
Ad hoc, informal, incomplete
The Web
Cart
Metaphors bridge the gap
Brainstorming
Developed in response to “group think” Basic rules:
Someone keeps list so everyone can see No idea is too wild No evaluation Silence does not mean “DONE”
Fun and “light weight”
Grocery Shopping?
• Soccer mom:•
• Shopping cart:•
• Shelves•
metaphors
•
new scenario
• Online grocery?
• Soccer mom:•
The Morphological Box
Identify dimensions of the design space Enumerate all possible solutions
Grocery Shopping?
•
Problem scenarios
summativeevaluation
Information scenarios
claims about current practice
analysis ofstakeholders,field studies
Usability specifications
Activityscenarios
Interaction scenarios
iterativeanalysis ofusability claims andre-design
metaphors,informationtechnology,HCI theory,guidelines
formativeevaluation
DESIGN
ANALYZE
PROTOTYPE & EVALUATE
Execution
Action plan
Systemgoal
Last month’sbudget... ?
Interpretation
PerceptionMakingsense
GULF OFEVALUATION
GULF OFEXECUTION
Stages of Action in HCIInformationdesign
Interactiondesign
Human-computer
interaction
Taskgoal