03-07 Lecture Slides (Final)

03-07 Lecture Slides (Final) - Lecture 13 Memory 3(Working...

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3/7/13 1 Lecture’13:’ Memory’3’(Working’Memory’ &’Properties’of’LTM)’ PSYC’2145’ Introductory’Cognitive’Psychology’ March’7,’2013’ Announcements n 8 th ’ZAPS’assignment’( MENTAL’ROTATION’ 3-D ),’due’03/13’ (W)’8:00’p.m.’ n The’course’outline’(p.’7’of’the’syllabus)’has’been’updated’ slightly’(see’the’syllabus’section’of’D2L)’ n The’next’two’classes’(03/12’&’03/14)’ ¨ Topic:’LTM’in’various’contexts’ ¨ Assigned’reading:’ Reisberg’(the’entire’ Chapter’7 )’ n If’you’notice’any’errors/missing’entries’for’Unit’2’grades,’ notify’your’TA’by’the’end’of’next’week’( 03/15 )’ ¨ Mid-Term’#2,’Quizzes’6-10,’&’ZAPS’3-5’ n 3 rd ’mid-term’exam,’scheduled’for’ 03/19’(T)’ ¨ The’study’guide’will’be’made’available’next’Tuesday’(03/12)’ Short-Term’Memory’(STM)’ (covered on 03/05) n The’modal’model±s’characterization’of’STM:’ ¨ A’stepping’stone’to’LTM’ ¨ A’temporary’storage’system’equipped’with’a’Fxed’number’of’ slots’for’to-be-remembered’items’ Sensory’ Store’ Short-Term’ Store’ Long-Term’ Store’ External’ Information’
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3/7/13 2 Properties’of’STM’ (covered on 03/05) (1)’Capacity’limits’ ¨ 7’plus’or’minus’2’“ chunks ”’(not’items)’ (2)’Code’ ¨ Speech-based ’( phonological )’codes’are’dominant,’though’ other’codes’also’exist’ (3)’Forgetting’ ¨ Interference ’clearly’plays’a’role’(it’cannot’be’just’decay)’ (4)’Search’ ¨ Serial’exhaustive ’search’ Main’Points’of’Today±s’Lecture n STM,’as’portrayed’in’the’modal’model,’has’some’problems,’ which’led’to’the’development’of’working’memory’(WM)’ n WM’is’an’active’system’that’supports’complex’cognition’ and’has’multiple’components’ ¨ Baddeley±s’multicomponent’model’of’WM’ n The’phonological’loop,’the’ visuospatial’sketchpad,’the’central’ executive,’and’the’episodic’bu²er’ n LTM’has’some’characteristics’di²erent’from’those’of’STM’ ¨ LTM’has’no’known’capacity’limits’and’can’be’long-lasting’ ¨ The’semantic’codes’were’considered’dominant,’but’other’ codes’also’exist’ ¨ There’are’di²erent’mechanisms’of’forgetting’from’LTM’ Three turtles rested on a floating log, and a fish swam beneath them Demonstration
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3/7/13 3 Problems’with’the’Modal’Model±s’ Characterization’of’STM (1)’The’recency’eFect’may’not’ reflect’STM’contribution’ ¨ Long-term’recency’eFect’ n ²ree’recall’of’the’U.S.’ presidents’ A clear recency effect (= long-term recency effect) Problems’with’the’Modal’Model±s’ Characterization’of’STM
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