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SBD: Activity Design. CS 3724 - HCI Chris North. Usability Engineering - Chapter 3. Hall of Fame/Shame Presentations. http://courses.cs.vt.edu/~cs3724/fall2006/schedule.html. HW#1 Revisited. ANALYZE. analysis of stakeholders, field studies. claims about current practice.

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SBD: Activity Design

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Sbd activity design

SBD: Activity Design

CS 3724 - HCI

Chris North

Usability Engineering - Chapter 3


Hall of fame shame presentations

Hall of Fame/Shame Presentations

  • http://courses.cs.vt.edu/~cs3724/fall2006/schedule.html


Hw 1 revisited

HW#1 Revisited


Sbd activity design

ANALYZE

analysis of

stakeholders,

field studies

claims about current

practice

Problem scenarios

DESIGN

Activity

scenarios

metaphors,

information

technology,

HCI theory,

guidelines

iterative

analysis of

usability

claims and

re-design

Information scenarios

Interaction scenarios

PROTOTYPE & EVALUATE

summative

evaluation

formative

evaluation

Usability specifications


Sbd activity design

Root concept: vision, rationale,

assumptions, stakeholders

SBD and

Requirements

Analysis

Field studies: workplace observations,

recordings, interviews, artifacts

Summaries: stakeholder, task, and artifact analyses, general themes

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


Sbd activity design

ANALYZE

analysis of

stakeholders,

field studies

claims about current

practice

Problem scenarios

DESIGN

Activity

scenarios

metaphors,

information

technology,

HCI theory,

guidelines

Functionality

iterative

analysis of

usability

claims and

re-design

Information scenarios

Look and feel

Interaction scenarios

PROTOTYPE & EVALUATE

summative

evaluation

formative

evaluation

Usability specifications


Sbd activity design

The Two Faces of HCI Design

SYSTEM FUNCTIONALITY

customer data

ordering

Information & Interaction Design

product data

Activity Design

searching

browsing

LOOK & FEEL

payment

icons

links

security

menus

layout

navigation

labels

fields

feedback


Sbd activity design1

SBD: Activity Design

  • Transform old activities to new activities that use technology

  • Focus on system “what”,not “how” (why?)

    “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 ideas

Activity design scenarios:

transform current activities to use new design ideas


Sbd activity design

Problem scenarios: work from current practice to build new

Activity design space: brainstorm implications of metaphors and technology

Problem claims: look for design ideas that address negatives, but keep positives

Activity design scenarios:

transform current activities to use new design ideas

+/-

SBD:

Activity

Design

HCI knowledge about activity design

Claims analysis: identify, illustrate, and document design features with key implications

+/-


Envisioning new activities

Envisioning new activities

  • Effectiveness: meets users’ needs

    • Innovative technology vs. tried-and-true

    • Generality vs. specific tasks

  • Comprehension: understandable, predictable

    • Mental models

    • Metaphors

  • Satisfaction: accomplishment, motivating

    • Automation vs. control

    • Individual vs group needs


  • Metaphors bridge the gap

    Metaphors bridge the gap

    +

    -

    User’s

    Mental Model

    Designer’s Model

    The Web

    Cart

    Cashier

    Systematic, logical,

    comprehensive

    Ad hoc, informal, incomplete


    Activity design process

    Activity design process

    • Design alternatives

      • Focus on fixing -’s, preserving +’s

      • Informal methods:

        • Brainstorm

        • Try metaphors

        • Apply technologies

        • Explore “what if”s, Be creative, out of the box

      • Systematic methods:

        • Identify design space -- Morphological Box

  • Rework scenarios with new design ideas

    • Participatory design

    • Coherence, completeness

  • Track claims

    • +/-, rationale

  • Iterate


  • The morphological box

    The Morphological Box

    • Identify dimensions of the design space

    • Enumerate all possible solutions

    PBJ sandwich, on whole wheat, no butter


    Brainstorming

    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

    Grocery shopping?

    • Soccer mom:

    • Shopping cart:

    • Shelves/Aisles:


    Metaphors

    metaphors


    New scenario

    new scenario

    • Online grocery?

    • Soccer mom:


    The morphological box1

    The Morphological Box

    • Identify dimensions of the design space

    • Enumerate all possible solutions

    PBJ sandwich, on whole wheat, no butter


    Grocery shopping1

    Grocery shopping?


    Sbd activity design

    ANALYZE

    analysis of

    stakeholders,

    field studies

    claims about current

    practice

    Problem scenarios

    DESIGN

    Activity

    scenarios

    metaphors,

    information

    technology,

    HCI theory,

    guidelines

    iterative

    analysis of

    usability

    claims and

    re-design

    Information scenarios

    Interaction scenarios

    PROTOTYPE & EVALUATE

    summative

    evaluation

    formative

    evaluation

    Usability specifications


    Sbd activity design

    Interpretation

    Perception

    Making

    sense

    GULF OF

    EVALUATION

    Last month’s

    budget... ?

    GULF OF

    EXECUTION

    Execution

    System

    goal

    Action plan

    Stages of Action in HCI

    Information

    design

    Human-computer

    interaction

    Task

    goal

    Interaction

    design


    Homework 2

    Homework #2

    • Due Thurs

    • Study Usability Case library

      • Garden.com

      • Requirements analysis

  • Create an HTA for planning a garden

    • Use existing analysis – stuff you didn’t know

    • Add own/friends’ knowledge

    • Hierarchical decomposition

    • Be thorough


  • Project step 2 reqmts analysis

    Project Step 2 – Reqmts Analysis

    • Due next Thurs

    • Do the UE process

      • Identify stakeholders

      • Observe, interview, survey

      • Analyze data

      • Develop representations

  • Users

  • Problem scenarios

  • Claims

  • What’s the REAL problem? Remember Glenn Fink!


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