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02-19 Lecture Slides (Final)

02-19 Lecture Slides (Final) - Lecture 9 Attention 2(Change...

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2/19/13 1 Lecture’9:’ Attention’2’(Change’Blindness’ &’Divided’Attention)’ PSYC’2145:’ Introductory’Cognitive’Psychology’ February’19,’2013’ Announcements’ n 5 th ’ZAPS’assignment’( BROWN-PETERSON’TASK ),’due’02/20’ (W)’8:00’p.m.’ n Readings’for’the’attention’lectures’(02/14,’02/19,’&’02/21)’ ¨ Reisberg’(Chapter’4)’---’relevant’to’all’three’lectures’ ¨ Reading’3’(available’on’D2L)’---’relevant’to’the’02/19’lecture’ n 2 nd ’mid-term’exam,’scheduled’for’ next’Tuesday,’02/25’ ¨ The’same’format’as’before’(T/F’&’MC’questions)’ ¨ 8’textbook-only’questions’(20%’of’the’total’score)’ ¨ The’study’guide’is’now’available’on’D2L’ (covered on 01/17)
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2/19/13 2 Student’ID :’ Your’9-digit’ student’ID’here’ Class’ID :’’ Section’2:’ CQ46GK6X’ Section’3:’ RQ46L97G’ (see’also’the’p.’2’of’the’syllabus)’ (covered on 01/17) Varieties’of’Attention:’Brief’Review ( covered on 02/14 )’ Auditory’Selective’Attention’ Visual’Selective’Attention’ Divided’Attention’ Sustained’Attention’(Vigilance)’ Metaphors’of’Attention’ ( covered on 02/14 )’ n Auditory’selective’attention’ ¨ “Filter”’ n Dichotic’listening’paradigm’ ¨ People’typically’notice’the’ physical’characteristic,’not’ the’meaning,’of’the’ unattended’message’ n Early’vs.’late’selection’ ¨ It’depends’on’the’task’ demand’
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2/19/13 3 n Visual’selective’attention’ ¨ Flexible’“spotlight”’ n Movable’ n Can’flexibly’change’the’ width’of’focus’ n Visual’selective’attention’ ¨ “Glue”’ needed’to’temporarily’ bind’together’separately’ processed’features’ Item in the world Perceptual properties Perception of an object Color Shape Attention Metaphors’of’Attention’ ( covered on 02/14 )’ Simple-Feature’Search’vs.’Conjoint’Search Single-feature search: the pop-out effect Conjoint search: Strong effect of distractor size No attentional glue needed (only single feature is needed for the search) Attentional glue needed to bind multiple features together ZAPS’#3:’Visual’Search’Results Section 2 Data Section 3 Data Simple’ Search’ Conjoint’ Search’ Simple’ Search’ Conjoint’ Search’ Target’ present’ Target’ present’ Target’ absent’
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