Psychological%20Principles

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Psychological Principles
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• Four Psychological Principles
• Users See What They Expect to See
• Users Have Difficulty Focusing on More Than One
  Activity at a Time
• It Is Easier to Perceive a Structured Layout
• It Is Easier to Recognize Something Than to
  Recall It

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Design Knowledge

• Design Principles
• First Principles of Interactive Design
• Design Rules
• 8 Golden Rules
• See URL http//www.usask.ca/education/coursework/
  skaalid/theory/interface.htm

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4 Psychological Principles

• Users See What They Expect to See

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4 Psychological Principles

• Users Have Difficulty Focusing on More Than One
  Activity at a Time
• The Cocktail Party Effect
• Principle of Perceptual Organization
• Group like things together
• Principle of Importance
• Prominent display for important items

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4 Psychological Principles

• It Is Easier to Perceive a Structured Layout

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4 Psychological Principles

• Gestalt principles
• Proximity
• Elements close together are seen as groups
• Similarity
• Elements with same shape or color appear to
  belong together
• Closure
• When possible, we compllete incomplete objects in
  our head
• Continuity
• Figure d is two lines of dots, not random ones
• Symmetry
• Regions with symmetric borders are sen as shapes

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4 Psychological Principles

• It Is Easier to Recognize Something Than to
  Recall It
• Principle of recognition
• Knowledge in the head Knowledge in the world

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• Three Principles from Experience Visibility,
  Affordance, and Feedback
• The Principle of Visibility It Should Be Obvious
  What a Control Is Used For

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Three Principles from Experience Visibility,
Affordance, and Feedback

• The Principle of Affordance It Should Be Obvious
  How a Control Is Used

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Three Principles from Experience Visibility,
Affordance, and Feedback

• The Principle of Feedback It Should Be Obvious
  When a Control Has Been Used