02-14 Lecture Slides (Final)

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Unformatted text preview: ode Theory n༆  Johnston & Heinz’s dual- task study ¨༊  ¨༊  1. No shadowing 2. Shadow only one list of words 3. Shadow while ignoring a physically different list of words 4. Shadow while ignoring a physically similar list of words ¨༊  2-1 3-1 4-1 Light detection task (all subjects) One of the shadowing tasks < < Prediction: n༆  Greater reaction time costs for 4 (late selection) than 3 (early selection) Supported! 8 2/14/13 Conclusion Early Selection Theory Late Selection Theory n༆  n༆  The filtering/selection mechanism seems to be flexible, not fixed at a particular stage Early and late selection theories are complementary, not contradictory, to each other Auditory vs. Visual Selective Attention n༆  Both have two general characteristics of attention ¨༊  Selectivity ¨༊  Limited capacity n༆  n༆  Focusing on a particular stimulus severely limits the amount of processing you can do for other stimuli But different metaphors are used to characterize selective attention ¨༊  Auditory: “filter” ¨༊  Visual: “spotlight” and “glue” The Flexible...
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