Interface Metaphors and Conceptual Models

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Interface Metaphors and Conceptual Models

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Verbal metaphors

• Who use a word processor for the first time ?
• typewriter
• Knowledge about a familiar domain in terms of
  elements and their relation to each other is
  mapped on to those in the unfamiliar one.
• Elements
• Keyboard, spacebar, return key
• Relations
• One key can be hit at any one time

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Virtual interface metaphors

• To create electronic counterparts to the physical
  objects in an office
• Icons in the screen
• The mouse was developed to enable actions
  equivalent to physically behaviors, such as
  clicking, pointing, selecting, and dragging.

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What is the difference between a verbal metaphor
and a virtual interface one?

• Verbal metaphors invite the user to see the
  similarities and dissimilarities between the
  system and the familiar domain
• Virtual interface metaphors combine the system
  and familiar domains into one entity

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Composite metaphors

• The desktop metaphor has been combined two
  metaphors or more computer based actions
• Ex menus, windows, and desktop metaphors
• together for carrying out a range of

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Multiple mental models

• People can readily assimilate differing concepts
  and develop multiple mental models
• There are some poorly designed composite
  metaphors that can cause conceptual problems to
  their users.

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Ubiquitous computing

• Invisibly enhancing the world that already exists
• To make the interface metaphor invisible to the
  user
• Example the tab with an invisible interface
  metaphor (figure 7.2)

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Conceptual models

• The generic term that describes the various ways
  in which systems are understood by different
  people.
• The way users conceptualize and understand the
  system (users model)
• The way designers conceptualize and view the
  system (design model)

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System image

• The interface, its behaviour and the
  documentation for users to understand the design
  model

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