Cognitive dimensions

From Wikipedia, the free encyclopedia

Cognitive dimensions are design principles for notations & programming language design, described by researcher Thomas R.G. Green. The dimensions can be used to evaluate the usability of an existing interface, or as heuristics to guide the design of a new one.

  • abstraction gradient
  • closeness of mapping
  • consistency
  • diffuseness/terseness
  • error-proneness
  • hard operations: hard mental processing
  • hidden dependencies
  • premature commitment
  • progressive evaluation
  • role-expressiveness
  • secondary notation & escape from formalism
  • viscosity: difficulty making changes
  • visibility
  • side by side ability: making comparisons (juxtaposability)

T. R. G. Green and M. Petre. Usability analysis of visual programming environments: A `cognitive dimensions' framework. Journal of Visual Languages and Computing, 7:131--174, 1996.


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