Monday 2 Sept 2006TC 310 Fall Usability Testing Gould & Lewis: 3 Principles of design –Early focus on the user –Empirical measurement –Iterative design Usability Testing = empirical measurement
Monday 2 Sept 2006TC 310 Fall Informing your design decisions Gestalt Laws – one source of information Proximity Similarity Closure Continuity Symmetry Relative size Figure and Ground Common fate –Later Additions Division (Kostelnick and Roberts, 1998) Connectedness (Palmer and Rock, 1995) Empirical Studies
Monday 2 Sept 2006TC 310 Fall Gestalt Laws: Proximity Ware C. (2004). Information Visualization: Perception for Design: Elsevier Inc: San Francisco, CA, p.189.
Monday 2 Sept 2006TC 310 Fall Gestalt Laws: Similarity Ware C. (2004). Information Visualization: Perception for Design: Elsevier Inc: San Francisco, CA, p.190.
Monday 2 Sept 2006TC 310 Fall Ware C. (2004). Information Visualization: Perception for Design: Elsevier Inc: San Francisco, CA, p Gestalt Laws: Closure
Monday 2 Sept 2006TC 310 Fall Continuity Ware C. (2004). Information Visualization: Perception for Design: Elsevier Inc: San Francisco, CA, p.193.
Monday 2 Sept 2006TC 310 Fall Gestalt Laws: Symmetry Ware C. (2004). Information Visualization: Perception for Design: Elsevier Inc: San Francisco, CA, p.193.
Monday 2 Sept 2006TC 310 Fall Gestalt Laws: Relative Size Ware C. (2004). Information Visualization: Perception for Design: Elsevier Inc: San Francisco, CA, p.197.
Monday 2 Sept 2006TC 310 Fall Ware C. (2004). Information Visualization: Perception for Design: Elsevier Inc: San Francisco, CA, p.198. Gestalt Laws: Figure and Ground
Monday 2 Sept 2006TC 310 Fall Ware C. (2004). Information Visualization: Perception for Design: Elsevier Inc: San Francisco, CA, p.198. Gestalt Laws: Figure and Ground
Monday 2 Sept 2006TC 310 Fall Gestalt Laws: Common Fate
Monday 2 Sept 2006TC 310 Fall Gestalt Laws: Division
Monday 2 Sept 2006TC 310 Fall Gestalt Laws: Connectedness Ware C. (2004). Information Visualization: Perception for Design: Elsevier Inc: San Francisco, CA, p.192.
Monday 2 Sept 2006TC 310 Fall
Monday 2 Sept 2006TC 310 Fall
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Monday 2 Sept 2006TC 310 Fall Empirical Studies Miles Tinker –Readability research Stone and Glock –Studies in how visuals effect procedural instructions Kosslyn –Studies in understanding perception of charts and graphs Design Research can address/help: –How to solve design issues –How to provide a design rationale
Monday 2 Sept 2006TC 310 Fall Charts, Graphs, Diagrams and Maps Graph –Quantitative measures –Some Maps if they lay-out distance Charts and Diagrams –Qualitative –Specifies relationships –Diagrams = schematic pictures of objects or events Maps –Spatial layout
Monday 2 Sept 2006TC 310 Fall When to use a Graph Illustrate relations among measures Not for absolute measures Considersations –Relevance –Appropriate Knowledge Know your audience
Monday 2 Sept 2006TC 310 Fall Pie or Divided Graphs Emphasize the components of a whole
Monday 2 Sept 2006TC 310 Fall Line Graphs Quantitative data Good for Interval Scales (Time,Temp,Money) Interactions
Monday 2 Sept 2006TC 310 Fall Bar Graphs Quantitative data Comparisons Vertical vs. Horizontal –When in doubt…use vertical Side by side graphs – show comparisons
Monday 2 Sept 2006TC 310 Fall Step Graphs Quantitative Data Illustrate trends among >2 members of a nominal or ordinal scale Use a line graph if the values vary continuously
Monday 2 Sept 2006TC 310 Fall Scatter Plots Quantitative Data Regression Lines
Monday 2 Sept 2006TC 310 Fall Stacked Bar Quantitative Data – nominal scale Many of the same properties of divided bar graphs…except overall height
Monday 2 Sept 2006TC 310 Fall Layer Graph Quantitative Data Overall height indicates cumulative total ewizard.com/namev oyager/lnv0105.htmlhttp:// ewizard.com/namev oyager/lnv0105.html
Monday 2 Sept 2006TC 310 Fall
Monday 2 Sept 2006TC 310 Fall
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Monday 2 Sept 2006TC 310 Fall
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Monday 2 Sept 2006TC 310 Fall
Monday 2 Sept 2006TC 310 Fall
Monday 2 Sept 2006TC 310 Fall Assignment 1 Software: Microsoft PowerPoint Genre: Poster (20” x 30”) Purpose: To support a speaker from your company/organization when talking about the company’s products. Users: –The speaker –One of three different audiences (focus each poster on only one audience)