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Unformatted text preview: 2007-11-06Read Chapter 6 pages 204-249Perception: Creating Our WorldOrganization from 2 DirectionsBottom up processing:oAnalysis of individual stimulus elementsoRecombines them into unified wholeTop Down Processing:oUse existing knowledge, concepts, ideas, expectationsIn reality, it is a combination of both processing.Role of AttentionInvolves 2 processesoFocus on certain stimulioFiltering out othersDemonstrated in shadowing experimentsoListen to 2 messages delivered through earphones (on through each earphone)oFocus on one; ignore the otheroCan recall info from attended one; not from unattended oneEnvironmental (Bottom-up) and Personal (Top-down) FactorsBoth play a role in attention, ex. Hansen and Hansen, 1988oStimulus CharacteristicsIntensity, novelty, movement, contrast, repetitionoInternal FactorsMotives, interests, threats to well beingPerceptual OrganizationGestalt PrinciplesoGestalt: Form emerges from pattern, shapeWholes we perceive are more than sum of their partsSeeing either brown and white spots, or horses in the painting by Bev DoolittleHow is it that we can perceive horses in a painting of spots?Gestalt Theorists Perception is governed by laws that group thingsoFigure-GroundSimplest form of organizationImpose a foreground and a backgroundoFigureDistinct shape...
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- Spring '09