03a Goals and Objectives.docx - Unit 03a P335 Goals and Objectives Lecture Notes 06a Attention I Upon completion of this unit you should be able to

03a Goals and Objectives.docx - Unit 03a P335 Goals and...

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Unit 03a P335 Goals and Objectives Lecture Notes: 06a Attention I Upon completion of this unit, you should be able to define and use the following terms: Stimulus-driven (exogenous) attention : external control, seemingly automatic capturing of attention caused by certain external stimuli that we have no control over Goal-directed (endogenous) attention : our ability to choose what to attend to Inattentional blindness Change blindness Late Selection : no capacity limitations - Can perform selection after pattern recognition using stimulus’s identity or its meaning in order to make that selection - Selection stage is responsible for determining what information gets into STM and what information gets dropped Early Selection : refers to filtering information out before we even identify it - Capacity limited; too much to attend to so we have to filter out the unimportant things so pattern recognition doesn’t get overwhelmed - Cannot use meaning to decide what stimulus to focus on - Information comes to us on a variety of channels; attention operates at a physical sensory level; attention is necessary for deriving meaning - Everything goes through pattern recognition and it is only after it goes through PR that we decide whether to attend to it or not Dichotic Listening : separate messages played to left and right ear, results were interpreted to mean that nothing about meaning gets through on the unattended channel, but only low level physical characteristics of the stimulus Shadowing : in a dichotic listening task participants are told to shadow one ear or the other; involves repeating back everything said to the shadowed ear Capacity Models of Attention - Performing mental operations requires effort - Supply of effort is limited - Interference/attention deficits occur when task demands exceed total available capacity - The higher up the information processing chain we have to process material, the greater is the presumed load - People can strategically control how effort is allocated Attenuation Model of Attention : Triesman - Selection does in general take place prior to pattern recognition -
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  • Spring '14
  • AndrewHendrickson

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