540310 Human Factors in Information Seeking and Use

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540-310 Human Factors in Information Seeking and
Use

• Wooseob Jeong

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Notice

• No class next week!
• Think about your usability test item.
• Measurable
• Usability Test I is due on March 17th.
• Usability Test II is due on April 7th.

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Visualization of Information (1)
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Visualization of Information (2)
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Visualization of Information (3)

• 3Ds and Colors
• Sonification/Audification
• ICAD International Community for Auditory
  Display
• Hapticization/Haptification
• Gaming Industry
• Jeongs research

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Why multimodality?

• Why not?
• Multimodality is natural
• Driving a car while listening to music
• Vision is predominant in information system
• Availability
• The disabled
• Situational

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Multimodality vs. Multimedia

• Multimedia
• Multiple media
• Text Graphic multimedia
• Graphic Sound multimedia
• Multimodality
• Multiple channels
• Text Graphic ? multimodality
• Graphic Sound multimodality

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Arbitrary Bivariate Color Maps

• Bivariate Multimodal Thematic Maps

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Three-variable mapping? Or more?
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Variables

• Independent Variables
• 4 Different Modes
• Color-Color Color-Auditory Color-Haptic
  Auditory-Haptic
• Dependent Variables
• Completion Time
• Retention (recall) Rate

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Experimental Setting (1)

• Experiment Interface Design
• Immersion Studio, Immersion Web Designer
• LiveImage
• http//www.immersion.com
• http//www.sois.uwm.edu/jeong/experiment/
• Within-Subject Setting
• Counter Balancing
• Latin Square

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Experimental Setting (2)
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Experiment Interface
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Data Analysis

• Repeated Measurement ANOVA
• Sample size
• Experiment I 39
• Experiment II 24
• Tasks
• Experiment I to identify each states bivariate
  values with legend.
• Experiment II to identify each states bivariate
  values without legend within 60 seconds.

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Completion Time (n39)
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Recall Rate (n24)
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Assistive Computing

• Section 508
• ACM Computers the Physically Handicapped
  Conferences Proceedings
• Research papers presented in ACM conferences
  (full text - PDF)
• Windows Accessibility Option
• Screen Magnifier
• Braille Generator (Braille Pad, Braille Monitor,
  )
• Speech Generator
• Sign Language Generator
• Head Movement Input 
• http//www.sois.uwm.edu/jeong/540310/assistive.htm
  

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Usability Test Assignment (1)

• Part I Select Target Product
• Decide your target device. Anything can be your
  subject paper manuals, electronic devices,
  tools, web sites, software, hardware, but the
  list should not be limited.
• Pick one device, and describe what's the thing
  for what's the expected function, utility, and
  advantage? who use it?
• 200 words No more than 1 page!
• Plus, informed consent form
• Due on 3/17 (5)

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Usability Test Assignment (2)

• Part II Usability Test Report
• Identify any usability problems by testing at
  least three subjects, who should be available
  easily like your room mates or family members.
• Before testing, you should carefully develop
  appropriate tasks. The problems should be
  addressed in terms of usability perspective,
  especially time, effort, and error.
• Based on your findings, you should suggest any
  modification for the improvement of usability.
• 500-1000 words tables figures - 15 
• Due on 4/7

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Logical User-Centered Interactive Design
Methodology

• Develop product concept
• Performance research and needs analysis
• Design concepts and key-screen prototype
• Do iterative design and refinement
• Implement software
• Provide rollout support

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Stage 1 Develop product concept

• Create a high concept.
• Establish business objectives.
• Set up the usability design team.
• Identify the user population.
• Identify technical and environmental issues.
• Produce a staffing plan, schedule, and budget.

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Stage 2 Perform research and needs analysis

• Partition the user population into homogeneous
  segments.
• Break job activities into task units.
• Conduct needs analysis through construction of
  scenarios and participatory design.
• Sketch the process flow for sequences of tasks.
• Identify major objects and structures which will
  be used in the software interface.
• Research and resolve technical issues and other
  constraints.

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Stage 3 Design concepts and key-screen prototype

• Create specific usability objectives based on
  user needs.
• Initiate the guidelines and style guide.
• Select a navigational model and a design
  metaphor.
• Identify the set of key screens login, home,
  major process.
• Develop a prototype of the key screens using a
  rapid prototyping tool.
• Conduct initial reviews and usability tests.

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Stage 4 Do iterative design and refinement

• Expand key-screen prototype into full system.
• Conduct heuristic and expert reviews.
• Conduct full-scale usability tests.
• Deliver prototype and specifications.

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Stage 5 Implement software

• Develop standard practice.
• Manage late stage change.
• Develop online help, documentation and tutorials.

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Stage 6 Provide rollout support

• Provide training and assistance.
• Perform logging, evaluation, and maintenance.
• Remember that usability tests are at stage 3 and
  4!

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Five reasons for hard-to-use products and systems
(1)

• During product development the emphasis and focus
  have been on the machine or system, not on the
  person who is the ultimate end user.
• As technology has penetrated the mainstream
  consumer market, the target audience has changed
  and continues to change dramatically. Development
  organizations have been slow to react to this
  evolution.

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Five reasons for hard-to-use products and systems
(2)

• The design of usable systems is a difficult,
  unpredictable endeavor, yet many organizations
  treat it as if it were just common sense.
• Organizations employ very specialized teams and
  approaches to product and system development, yet
  fail to integrate them with each other.

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Five reasons for hard-to-use products and systems
(3)

• The design of the user interface and the
  technical implementation of the user interface
  are different activities, requiring very
  different skills. Today, the emphasis and need
  are on the design aspect, while many engineers
  possess the mind set and skill set for technical
  implementation.