Introduction to Cognitive Psychology - Department of Psychological ...

Prof. Greg Francis 1/2/13bluegreenFeature maps: color, shapeInterpretationConjunctive search cannot identify target within either feature mapColorShapecornersarcsPurdue UniversityRequires searchby comparisonacross featuremaps.Serial processthat takes timeConjunctive search fortarget absent has aslope twice as steep asfor target present Because when thetarget is present youfind it, on average,after searching half theitems and then canstop the search For target absentsearches, you mustsearch all items toverify each is not thetargetVisual searchPurdue UniversityAutomaticityWhen a task is unfamiliar itseems to require a lot ofattention to performLater it requires less attention riding a bike driving a car typing tying shoelaces» http://www.fieggen.com/shoelace/knots.htmPurdue UniversityAutomaticityThe process whereby a task goes fromrequiring a lot of attention to requiring little iscalled automatizationMany tasks are automatizable color naming word namingCan measure effects by pitting anautomatized task against a non-automatizedtaskPurdue UniversityStroop task Stroop (1935)Identify the color of ink for wordsStroop effectIt takes longer when the words are colornamesDemonstration measure reaction timePurdue UniversityPurdue UniversityPSY 200: Intro. to Cognitive Psychology 5