Memory

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Memory

• Martha Arterberry
• Roberts 340
• marterbe_at_colby.edu

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Memory

• Capacity to store and retrieve information
• Important foundation for cognitive processes

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Modal View of Memory
Sensory Register
Short-Term Working Memory
Long Term Memory (LTM)
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Sensory Memory
Capacity - large Retention short (½ sec) Ex
Iconic memory
Sensory Register
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Short-Term and Working Memory
Sensory Register
Short-Term Working Memory
Attention
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Short-Term Memory
Capacity 7 /- 2 items Retention
short Strategies
Sensory Register
Short-Term Working Memory
Attention
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Working Memory
Three components Phonological loop Visuospatial
sketch pad Central executive
Sensory Register
Short-Term Working Memory
Attention
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Long Term Memory
Memory Types Autobiographical Declarative Procedu
ral
Sensory Register
Short-Term Working Memory
Long Term Memory
Encoding
Attention
Retrieval
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Memory Test after Roediger and McDermitt (1995)

• Pen and pencils down
• Listen to list of words and try to remember them

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Recall Results

• Correct your answers overall number correct
• How many words did you recall in the
• first third of the list?
• The middle third?
• The last third?

Middle Third Wake Snooze Blanket Doze Slumber
Last Third Snore Nap Peace Yawn Drowsy
First Third Bed Rest Awake Tired Dream
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Think-Pair-Share

• Create a graph of your and your partners
  performance.

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Think-Pair-Share

• Does it look somewhat like this graph?
• Why did you get this performance? (Or why did I
  expect it?)
• Did you recall words not on the list?

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Serial Position Curve of Memory
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Interaction of STM and LTM

• Glanzer Cunitz (1966)
• Primacy effect recall from LTM
• Conditions
• Varied presentation rate read same word 1, 2,
  or 3 times.
• Varied timing read word once but waited 1, 2,
  or 3 sec before saying next word.

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Effect of Presentation Number
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Effect of Presentation Spacing
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Interaction of STM and LTM

• Glanzer Cunitz (1966)
• Recency effect recall from STM
• Varied delay before recall
• 0 sec delay immediate recall
• 10 sec delay
• 30 sec delay

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Effect of Delay
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Primacy Recency Effect
Sensory Register
Short Term Working Memory
Long Term Memory
Hypothesis Recency
Hypothesis Primacy
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Recalling words not on the list

• False memories (Roediger McDermott, 1995)
• 40 of adult participants recalled items not on
  the list
• Often people make the same mistakes (the same
  wrong words are recalled)
• Why?