Memory 4.1.2 PART 2 Flashcards

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1
Q

What is interference theory?

A

That forgetting occurs when one memory disrupts or blocks another causing both memories to become distorted, lost or inaccessible.

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2
Q

What are the two main processes of forgetting?

A

Displacement - (forgetting due to limited capacity / information pushed out by learning)

Decay ( forgetting overtime - due to limited duration)

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3
Q

What is proactive interference?

A

Old information disrupts new

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4
Q

What is retroactive interference?

A

New information disrupts old

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5
Q

Why does similar memories make remembering difficult?

A

1) in PI previously stored information makes new difficult to store

2) In ri a new information overwrites old memories which are similar

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6
Q

Lab studies to support the Interference theory

A

1) The more lists a participant had to learn the worse the recall was after 48 hrs ( SUPPORTS PROACTIVE)

2) PPT had to earn 10 words until off by heart / ppt were split into 6 groups
Found the most similar lists found worse recall.
SUPPORTS RETROACTIVE

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7
Q

REAL life studies supporting interference

A
  • 700 students to reacall as many of the local street names –> those who have moved houses remembered less
    SUPPORTS RETROACTIVE
  • Rugby players asked to recall the teams they played week by week
    Those who were absent from games remembered more . As those who had played more experience RETROACTIVE INTERFERENCE
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8
Q

What is the Encoding specifity principle?

A
  • Cues help retrival as long as the cues are present at the time of encoding and retrival
  • The more similar the retrival cue is to the encoding cue (recall more likely)
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9
Q

Who came up with the encoding specificity principle?

A

Tulving

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10
Q

What is context dependent forgetting?

A

forgetting due to absesnce of external/ environmental cues

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11
Q

What is state dependent forgetting?

A

Forgetting due to absent internal / state of mind cues

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12
Q

What was Godden and Badeleys context forgetting study?

A

1) Study of deep sea divers
- Divers learnt workds on land and underwater and were tested recall in both these place

( recall was most accurate when context ( environments) matched accquisition ( where they learnt it ))

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13
Q

Abernethy context dependent forgetting

A

Students taught the course content as norma
1 group tested in teaching room
1 group tested in another room
Group tested in the same room recalled more

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14
Q

Casssady and Carter state dependent study

A

Gave antihistamines to ppt –> mild sedative affect
Creates internal physiological state different ot nomal
PPT began to learn a list of words when on the drug and when not

When conditions were mismatched between learning and recall - worse performance

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15
Q

Strengths of retrival failure codes

A
  1. A range of study evidence ( generalisable / reliable)
  2. Real world application –> useful for imptoving recall
    3.
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16
Q

Weaknesses of retrival failue cues

A
  1. Artificial task - not population validity ss not all divers/ antihistamine drugs
  2. Context not very strong in real life e.g learning and recall doen in a diffeent room less likely to have an affect - not different enough
  3. Baddeley replicates his worl with recogniton - behaviour was the ame in all four therefore limits explanation
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17
Q

Eye witness testimony

A

The ability of people to rember details of events which they have viewed themselves

18
Q

Reconstructive memory

A

The origional perception of the event is retrived through use of schemas and is added to and refreshed each time

19
Q

What are post event discussions?

A

when recalling events with another witness alters the accuracy of recall of another witness

20
Q

What two factors cause for post event discussions to alter memory?

A

Memory conformity
Memory contamination

21
Q

Memory conformity

A

Witnesses go along with eachother to win social approval or because they beliebe other witnesses are right

22
Q

Memory contamination

A

when a co-witness discuss a crime and they mix misinformation from other witnesses into their own memory.

23
Q

leading questions

A

Questions that imply a particular answer or can influence how a memory is recalled

24
Q

What two explanations explain how leading questions affect EWT?

A

Response biassed explanation
substitution explanation

25
Q

Response biased explanation

A

the wording of the question has no real effect on an individuals memory but just influences how they decide to answer

26
Q

Substitution explanation

A

the wording od the question actually changes the individuals memory

27
Q

Gabber et al post event discussion research

A
  1. Pairs watched a video of the same crime but from different viewpoints
  2. Then they conducte a post event discussion before both had to complete a recall task

75% included aspects they did not see

28
Q

Gabber et al post event discussion research findings

A

Majority of the ppt recalled aspects they had not seen.
Witnesses go along with each other for approval or they believe the other answer is correct ( NSI and ISI)

29
Q

Loftus and Palmer leading questions study

A
  1. Participants watched a video and had to describe how fast the car eachother
  2. The verb intensity changed

the mean estimated speed increased the more agressive the verb - question biased the answers

30
Q

Strengths EWT - misleading information

A

Research support → Gabber et al / Loftus and Palmer
Watched car crash ‘ asked how fast it was going verb changed ‘crashed’ ‘hit’ → more aggressive the verb higher the mean speed
Pairs each saw

Real life application → practical uses where the consequences of inaccurate EWT can be serious. Loftus believes police officers leading questions can have a distorting effect on memory.improve legal system

31
Q

what is tunnel theory?

A

During a stressful event, we automatically narrow our attention to details at the source of arousal. → Narrowed attention and increased processing of critical detail = poorer memory of peripheral details. Attention focused on dangerous aspects

32
Q

what is anxiety ?

A

A mental state of arousal that includes feeling of extreme concern and tension.Accompanied by physiological changes e.g heartrate.

33
Q

Theories of how anxiety affects recall?

A
  1. Decreases recall - weapon focus → so focussed on weapon doesn’t look at the face of the criminal
  2. Increases recall - high anxiety makes witnesses more alert and aware of surroundings + emotions felt improves memory at encoding.
34
Q

what is the weapon focus effect?

A

the view that a weapon in a criminal’s hand distracts atttention ( builds up anxiety) from other features / reduces accuracy of identification.

35
Q

Johnson and Scott study into weapon focus effect - procedure

A

PPT waited outside a room believing they were waiting to take part in a trial ( it had already began) but ppt heard an argument in the next room.
1. Low anxiety condition - equipment failure - a man walks through carrying a pen w/ greasy hands

  1. High anxiety condition - heated argument - man walks out holding paper knife with blood on it

**Ppt asked who the man was out of 50 photos **

36
Q

Johnson and Scott study into weapon focus effect
FINDINGS

A

49% man with pen
33% man with knife → suggests knife/ weapon caused anxiety → reduced recall ( tunnel theory)

37
Q

Labarynth of horror - natural study

A
  • Went to London Dungeons with things that could scare them
  • Wore Heart Rate monitors
    Compared Low Vs High anxiety group
  • 17% of highs identified actor VS 75% of lows

Those in the low anxiety group were significantly better at identifying the actor → supports tunnel theory / high anxiety impairs memory

38
Q

Pickle - counter evidence

A

A thief entered hairdressers carrying scissors /handgun /wallet/ raw chicken → witnesses identification was least accurate in high surprise / unusual ( chicken)
- not threat / Argues that the weapon focus is about surprise not anxiety -

Despite evidence for the weapon focus effect, further research questions the role of threat.For example, Pickel
Not threat but surprise
Undermines the weapon focus effect

39
Q

Negatives of Yuille and Cutshall real situation

A

The different outcome could be due to post event discussion/ adrenaline would cause them to still think about it . Therefore may not be anxiety leading to the recollection.

40
Q

Yuille + Cutshall → positive effect / Real situation

A

Real life crime a gun shop owner shot a thief dead → 13 eye witnesses interviewed 4 months after
Results compared with police records at time of initial incident
Asked to rate stress levels at the time using a scale and emotions felt since the event

PPT who reported the highest amount of anxiety were more accurate in recall

41
Q

What is Yerkes- Dodson law of arousal

A

EWT increases anxiety as the witness becomes alert.However at an optimum level anxiety becomes too much and more stress results in lower accuracy.

42
Q

Yerkes - Dodson Law of arousal
- limitation

A

Anxiety is very difficult to define and measure accurately
One reason is that it has many elements - cognitive, behavioural, emotional and physical
But inverted U assumed only physiological is linked to poor performance ( ignores cognitive and behavioural)

One limitation is that it is an oversimplification as it ignores the cognitive factors, at high cognitive anxiety, there is a catastrophic drop off. Therefore the ‘catastrophe model’ is a more appropriate explanation of the role of anxiety in EWT as it can apply to more people.