L9WM.6slides - Lecture Outline Issues: (a) Role of WM in...

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Lecture Outline Issues: (a) Role of WM in thinking (b) Relationship between WM & LTM 1. Centrality of WM in thinking Raven ʼ s progressive matrices, mental arithmetic Individual differences Raven ʼ s, age, and working memory 2. Dissociating WM and long-term memory Neurobiological evidence Amnesia, WM disorder, double dissociations Behavioral evidence Serial position, primacy, recency, double dissociations Lecture Outline 3. Tripartite theory of WM — Phonological loop — Visuospatial sketchpad — Central executive Raven Progressive Matrices Mental Arithmetic 836 + 429 15 Flow Diagram 836 + 429 Working memory: “Reading Span” The boy ran with the dog. Last night, Tom went to school. RECALL _______ _______
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1. Raven’s scores worse for older people Yes: For old and young people with the same working memory score, Raven’s score is the same. Raven’s gets worse because WM gets worse? 3. WM scores worse for older people span 2. Raven’s better if WM is good Interference effects in reasoning All A ʼ s are B ʼ s All B ʼ s are C ʼ s All A ʼ s are C ʼ s Syllogism Random Number Generation (WM task) 3…5. ..9. ..4…8. ..7… 2... Working memory task interferes with reasoning Reading There is a sewer near our home who makes terriFc suits. “Individual differences”: people with high working memory spans have better comprehension of text. Correlation = .72. Anterograde Amnesia Anterograde amnesia: Inability to remember events occurring after brain injury. (Patient H.M.) Neurobiological evidence Patient H.M. Anterograde amnesia —Impaired Long Term Memory —Normal Working Memory Patient K.±. —Normal Long Term Memory —Impaired Working Memory Double Dissociations General Logic — System A Task 1 — System B Task 2 Lesion studies — Lesion in area a System A — Lesion in area b System B Task 1 Task 2 Task 1 Task 2 span (Hippocampus)
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Demo: Serial Position Curve
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This note was uploaded on 12/26/2009 for the course PSYCH 240 taught by Professor Gehring during the Fall '08 term at University of Michigan.

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L9WM.6slides - Lecture Outline Issues: (a) Role of WM in...

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