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Memory > Capacity, Duration, Coding > Flashcards

Capacity, Duration, Coding Flashcards

1
Q

What is the capacity for STM?

A

7 +/- 2

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2
Q

What is the duration of STM?

A

18 seconds

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3
Q

What is the coding for STM?

A

Acoustic

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4
Q

What is the capacity for LTM?

A

Infinite

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5
Q

What is the duration of LTM?

A

Endless

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6
Q

What is the coding for LTM?

A

Semantically

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7
Q

Which researchers investigated capacity for STM?

A

Miller - magic number

Jacobs - repeat strings of letters/digits

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8
Q

2 limitations of Jacobs?

A

Lacks external validity

Previous sequences may cause confusion

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9
Q

Which researchers investigated STM duration?

A

Peterson and Peterson

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10
Q

Briefly outline the procedure of Peterson and Peterson

A

Recall consonant syllables and 3 digit numbers after different length intervals

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11
Q

What were the findings of Peterson and Peterson?

A

Few could recall after 18 seconds interval

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12
Q

What is a weakness of Peterson and Peterson?

A

Lacks mundane realism

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13
Q

What researcher looked into STM coding

A

Baddeley

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14
Q

Briefly outline the procedure of Baddeley

A

Recall sets of words either immediately or after a 20-minute interval
Words acoustically similar/dissimilar or semantically similar/dissimilar

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15
Q

What is a weakness of Baddeley STM?

A

OP.A. found that visual coding can also be used - suggests that Baddeleys’s conclusions are oversimplified.

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16
Q

Evaluate Baddeley LTM (2 weaknesses)

A

RL - 20 minute interval is not a valid method for investigating LTM
OPA - Frost suggested visual info is related, suggesting Baddeley’s conclusions are oversimplified.

17
Q

What researcher investigated LTM duration?

A

Bahrick et al.

18
Q

Briefly outline the procedure of Bahrick et al.

A

Tested on ex-classmates
Free-recall
Photo-recognition

19
Q

What were the findings from Bahrick et al.?

A

Found that recall decreases with age

Overall, photo-recognition was better than recall, suggesting information is stored but just difficult to access

20
Q

What are 2 strengths of Bahrick et al.?

A

+ high external validity

+ good sample (400, wide age range)

Memory (7 decks)

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