Memory - Sensory, STM And LTM Flashcards

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1
Q

Encoding

A

How much info is taken in and recorded

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2
Q

Capacity

A

How much information can be held

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3
Q

Duration

A

How long Info can be held

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4
Q

Sensory memory encoding

A

Takes in info from the sense organs and holds them in the same form

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5
Q

Sensory memory capacity

A

Very large

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6
Q

Sensory duration

A

Info is stored in an unprocessed form. It is then transferred to short term mem through attention

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7
Q

Echoic

A

Auditory mem from the ears

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8
Q

Iconic

A

Visual info from the eyes

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9
Q

Haptic

A

Data/ info acquired through touch

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10
Q

Crowder 1993 - sensory

A
  • sensory register retains iconic for a few milliseconds
  • echoic lasts roughly 2-3 secs
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11
Q

Spearing 1960 - sensory

A
  • presented a grid of letters for less than a seconds
  • used tones to cue ppts to recall a specific row
  • recall on the specific row was high- showing we have a large capacity
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12
Q

Shorty term memory encoding

A

Acoustically

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13
Q

STM capacity

A

The “magic no” of + or - 2 from 7 (5-9 items)

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14
Q

STM duration

A

Roughly 18-30 secs
Very short because it is temporary
Only a few seconds, before it decays unless we rehearse it

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15
Q

Conrad 1964 - stm encoding

A
  • visually presented with a stimulus with letters 1 at a time
  • letters that were acoustically similar are harder to recall from STM than those acoustically dissimilar.
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16
Q

Miller 1956 - CHUNKING

A
  • makes info more meaningful
  • capacity can be extended
  • involves organising info in line with existing knowledge from the LTM
17
Q

LTM - encoding

A

It is meaning based (semantic)

18
Q

Baddeley 1996 - LTM encoding

A
  • presented as lists of 10 short words at a time
  • some lists were semantically similar, others were not
  • ppts. We’re Estes immediately, and then again after 20 mins
  • it was found that after 20 mins they did poorly on the semantically similar words
    Implies that we encode LTM according to what they mean, so things with similar meanings are easily CONFUSED
19
Q

Capacity LTM

A

No way to test what is stored in the LTM- so potentially unlimited

20
Q

Duration

A

Anything form minutes up to a lifetime

21
Q

Banrick et al 1975 - LTM duration

A
  • tested US graduates
  • ppts. We’re shown classmates photos 1 yr later- 90% accurate for remembering names and faces 34 yrs later
  • ppts. Knowledge began to decline after 48yrs, particularly for faces