Ch3 - 1 Chapter 03 ATTENTION and PERFORMANCE Parallelism Perception Motor response … But this parallelism does not continue throughout the

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Unformatted text preview: 1 Chapter 03 ATTENTION and PERFORMANCE Parallelism: Perception Motor response … But, this parallelism does not continue throughout the information processing system. → serial bottleneck The point in the path from perception to action at which people cannot process all the information in parallel. SERIAL BOTTLENECK Question: How much earlier bottlenecks occur? • Early-selection theories Late selection theories • Late-selection theories → AUDITION 2 SERIAL BOTTLENECK: Early-selection theories The Filter Theory (Broadbent, 1958) Dichotic listening task A task in which subjects are presented with two messages to two ears over headphones and are instructed to shadow one. SERIAL BOTTLENECK: Early-selection theories The Filter Theory (Broadbent, 1958) • Sensory information comes through the system • Some bottleneck is reached • Person chooses which message to process on the basis of some physical characteristic Person filter out the other information • Person filter out the other information. We attend based on physical characteristics. (e.g., as the pitch of the speaker's voice) SERIAL BOTTLENECK: Early-selection theories The Filter Theory (Broadbent, 1958) but, we attend based on semantic content, too. (e.g., the Cocktail Party effect ) 3 SERIAL BOTTLENECK: Early-selection theories The Filter Theory (Broadbent, 1958) but, we attend based on semantic content, too. Gray and Wedderburn (1960) Participants were successful in following a message that (e.g., the Cocktail Party effect ) jumped back and forth between the ears. SERIAL BOTTLENECK: Early-selection theories The Attenuation Theory (Treisman, 1964) Treisman (1960) experiment: Participants were instructed to shadow a particular ear ....
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This note was uploaded on 02/10/2010 for the course PSYCH 3540 taught by Professor Franciscoarcediano during the Spring '10 term at Auburn University.

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Ch3 - 1 Chapter 03 ATTENTION and PERFORMANCE Parallelism Perception Motor response … But this parallelism does not continue throughout the

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