Uncertainty Reading Group – 4/1

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A feature-integration theory integration of attention

• features are processed automatically and in parallel; objects are detected much later in the cognitive process
• features are integrated to create the impressions of objects
• gave 9 different tasks to illustrate feature integration: visual search
• this paper focuses on features singly vs. features in conjunction
  • features defined by conjunction are harder to find: require integration of basic features
  • conjunction requires serial processing, whereas individual features can be processed in parallel
  • separable vs. integral variables: how independently two visual variables are perceived; how easily they can be used to convey independent variables
  • the number of targets and the size of the display affects participants’ ability to detect features
    • more distractors=longer search for conjunctions