TB6 P&C Lecture 1; Models of attention

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  • Created by: mint75
  • Created on: 31-12-15 12:15

1. What was the critical result behind Lavies perceptual load hypothesis?

  • The compatibility effect only arose for the low load condition (small no of non-targets), no corresponding effect for high load condition
  • The compatibility effect only arose for the high load condition (small no of non-targets), no corresponding effect for low load condition
  • No resources were dedicated towards target detection so pps performed equally in both tasks
  • There was a noticeable dual task decrement from only the high load condition
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2. What is the concept of 'filtering'?

  • Selection of events with particular physical features = processing
  • Only processing events which belong to a particular category. Takes practice to establish categories/members
  • Once a category is establish, members are selected on the basis of bias to the category rather than on physical features

3. According to Kahnemans capacity model, why does the dual task decrement arise?

  • The task requires more resources than currently available
  • Researcher bias
  • Task interference
  • Practice effects

4. What the main finding from Cherrys (1953) shadowing experiment?

  • Pps could tell if the unattended channel was in German or Dutch
  • Very little is picked up from the unattended channel; only general physical characteristics without semantic analysis
  • Pps could recognise their name in the unattended channel
  • A lot of information can be accessed from the unattended channel including age, tone of voice and other semantic factors

5. What is the main premise of Kahnemans capacity model?

  • Any task demands capacity from the limited mental pool, relative to the persons experience
  • Resource allocation is only due to bottom-up processes
  • Any task demands capacity from the unlimited mental pool, relative to the persons experience
  • Stimuli independently use up a set amount of resources

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