Figures not included - D. Fry Science · 2019-12-06 · Table of Contents Seven Sins of Memory –...
Transcript of Figures not included - D. Fry Science · 2019-12-06 · Table of Contents Seven Sins of Memory –...
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Chapter 7
Human Memory – 8th Edition
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Figure 7.1 – Nickerson & Adams (1979) –
Which is the correct penny?
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Human Memory: Basic Questions
How does information get into memory?
How is information maintained in memory?
How is information pulled back out of memory?
Memory timeline
– Short term – recent?
– Long term – remote?
– Operational definitions
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Encoding: Getting Information Into Memory
The role of attention
Focusing awareness
Selective attention = selection of input
– Filtering: early or late? – F 7.3
Multitasking – issues of driving performance and cell
phone use – study by Strayer and Johnson (2001) –
F 7.4
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Figure 7.4 Divided attention and driving performance – Strayer & Johnson (2001)
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Levels of Processing: Craik and Lockhart (1972)
Incoming information processed at different levels: F
7.5
Deeper processing = longer lasting memory codes
Encoding levels:
– Structural = shallow
– Phonemic = intermediate
– Semantic = deep
– Study results – F 7.6
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XX 7.5
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Figure 7.6 – Retention at three levels of processing
– Craik & Tulving (1975)
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Enriching Encoding: Improving Memory
Elaboration = linking a
stimulus to other information at
the time of encoding
– Thinking of examples
Visual Imagery = creation of
visual images to represent
words to be remembered
– Easier for concrete objects: Dual-
coding theory – Figure 7.7, Paivio
et al. (1968) >>>>>>>>>>>
Self-Referent Encoding
– Making information personally
meaningful
Figure 7.7
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Storage: Maintaining Information in Memory
Analogy: information storage in computers ~ information storage in human memory
Information-processing theories – Atkinson & Shiffrin (1977) – Subdivide memory into 3 different stores
• Sensory, Short-term, Long-term
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Sensory Memory
Brief preservation of information in original sensory
form
Auditory/Visual – approximately ¼ second
– George Sperling (1960)
• Classic experiment on visual sensory store
• Partial report procedure – F 7.9
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Short Term Memory (STM)
Limited capacity – magical number 7 plus or minus
2
– Chunking – grouping familiar stimuli for storage as a single
unit
Limited duration – about 20 seconds without
rehearsal
– Peterson and Peterson (1959) – F 7.10
– Rehearsal – the process of repetitively verbalizing or
thinking about the information
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Short-Term Memory as “Working Memory”
STM not limited to phonemic encoding
Loss of information not only due to decay
Baddeley (2001) – 4 components of working memory
– F 7.11
– Phonological rehearsal loop
– Visuospatial sketchpad
– Executive control system
– Episodic buffer
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Long-Term Memory: Unlimited Capacity
Penfield’s neural stimulation – p. 284 – data was reinterpreted
Permanent storage? – Flashbulb memories
– Brown and Kulick (1977) – study of assassinations
– Talarico & Rubin (2003) – page 285-286 data in F 7.12 – 9-11 study
– Recall through hypnosis
Debate: are STM and LTM really different? – Phonemic vs.
Semantic encoding
– Decay vs. Interference based forgetting
Figure 7.12
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How is Knowledge Represented and Organized in Memory?
Clustering and Conceptual Hierarchies – F 7.13
Schemas and Scripts – Shank & Abelson (1977)
Semantic Networks – Collins & Loftus (1975) – Figure 7.14
Connectionist Networks and PDP Models – McClelland and
colleagues - pattern of activity – neuron based model
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Figure 7.14 A semantic network..
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Retrieval: Getting Information Out of Memory
The tip-of-the-tongue phenomenon – a failure in retrieval – Retrieval cues – Brown & McNeil (1966) study – resolve
block 57% of the time with first letter of failed to retrieve word
Recalling an event – Context cues – Godden & Baddeley (1975) – context-
dependent memory study with scuba divers
– Bartlett memory research – War of the Ghosts – F 7.15
Reconstructing memories – Loftus studies – Loftus & Palmer (1974) – Figure 7.16 – I: smashed (40.8); collided
(39.3); bumped (38.1); hit (34.0); contacted (31.8) II: smashed (32%) hit (14%) control (12%) (broken glass?)
– Misinformation effect
• Source monitoring, reality monitoring
• cryptomnesia
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Seven Sins of Memory – Daniel L. Schacter
Transience – loss of
memory over time
Absent Mindedness –
breakdown of interface
between attention & memory
Blocking – thwarted search
for information to retrieve
Bias – influence of current
knowledge and belief on how
we remember our past
Misattribution – assigning a
memory to the wrong source
Suggestibility – memories
implanted as a result of
leading questions,
comments or suggestions
when a person is trying to
recall a past experience
Persistence – repeated
recall of disturbing
information or events that
one may want to forget
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Forgetting: When Memory Lapses
Ebbinghaus’s Forgetting Curve – F 7.17
Retention – the proportion of material retained –
F 7.18
– Recall
– Recognition
– Relearning
Hill of reminiscence – time frame of remembering
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Why Do We Forget?
Ineffective Encoding
Decay theory
Interference theory – Type of material
– Figure 7.19
– Proactive
– Retroactive
– Figure 7.20
Figure 7.19
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Retrieval Failure
Encoding Specificity
Transfer-Appropriate Processing
Repression and the memory wards - F 7.21
– Authenticity of repressed memories?
– Memory illusions
– Controversy
False memories – Roediger & McDermott (1995)
procedure – Figure 7.22
Loftus & Pickrell’s (1995) lost-in-the-mall study
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The Physiology of Memory
Biochemistry – Alteration in synaptic transmission
• Hormones modulating neurotransmitter systems
• Protein synthesis
Neural circuitry – Localized neural circuits
• Reusable pathways in the brain
• Long-term potentiation – changes in postsynaptic neuron
Anatomy – Anterograde and Retrograde Amnesia – F 7.24
– case of H.M. – resection in 1953
– http://www.npr.org/templates/story/story.php?storyId=7584970
– http://www.nytimes.com/2008/12/05/us/05hm.html
– Clive Wearing
• Figure 7.23 - Cerebral cortex, Prefrontal Cortex, Hippocampus,
• Dentate gyrus, Amygdala, Cerebellum
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Are There Multiple Memory Systems?
Figure 7.25
Implicit vs. Explicit
Declarative vs. Procedural
Semantic vs. Episodic
Prospective vs. Retrospective – Figure 7.26
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Figure 7.26 – Retrospective versus prospective memory
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Improving Everyday Memory
Engage in adequate rehearsal – overlearning
Testing effect – F 7.27 – Roediger & Karpick (2006)
Serial position effects – F 7.28
Distribute practice and minimize interference - F 7.29
Emphasize deep processing and transfer-appropriate processing
Organize information
Encoding specificity – vary location of studying
Use verbal mnemonics – narrative stories – Figure 7.30 >>>>>>>>>>>>>>>>>>>>>
Use visual mnemonics – method of Loci – Figure 7.31
Akira Haraguchi, 60, needed more than (10/3/2006) 16 hours to recite pi (π) to 100,000 decimal places, breaking his personal best of 83,431 digits set in 2005.
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Eyewitness Accounts
Use of Eyewitness in court cases – Cutler & Penrod
(1995), Loftus (1993)
What did Jennifer See?
Post information distortion
Source confusion
Hindsight bias
Overconfidence