SELECTIVE PERCEPTION
CHAPTER1SELECTIVEPERCEPTION"Wedonotfirst see,thendefine,wedefinefirstandthensee." -WalterLippmann(citedinSnyder&Uranowitz, 1978) , , ,butaswillbecomeclear, , (1949).BrunerandPostmanpresentedpeoplewi thaseriesoffiveplayingcardsonatachis-tos cope(amachinethatcandisplaypicturesforve rybriefintervals), !BrunerandPostmanfoundthatittookpeoplemo rethanfourtimeslongertorecognizeatrickca rdthananor-malcard,andtheyfoundthatmostr eactionstotheincongruitycouldbecategoriz edasoneoffourtypes:dominance,compromise, disrup-tion, "perceptualdenial."Forexample,facedwitha blackthreeofhearts, ,formisdominantandcolorisassimilatedtopr iorexpectations,andinthesecondcase,color 1516PERCEPTION,MEMORY, 'sexperi-ment,27of28subjects(or96percent ofthepeople) ,someofBrunerandPostman' "greyish"fourofspades,orthataredsixofclu bswas"thesixofclubsilluminatedbyredlight "(remember,experi-mentalsubjectswereshow nthecardsonatachistoscope).HalfofBrunera ndPostman'ssubjectsshowedcompromiserespo nsestoredcards, , ,butwhenithappened, ,oneexperimentalsubjectexclaimed:"Idon't knowwhatthehellitisnow, 'saplayingcard.
is dominant and form is assimilated. In Bruner and Postman's experi ment, 27 of 28 subjects (or 96 percent ofthe people) showed dominance reactions at some point. Another reaction people had was to compromise. For instance, some ofBruner and Postman'ssubjects reported a red six ofspades as eithera purple six of spades or a purple six of hearts.
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