Memory Flashcards

(141 cards)

1
Q
A
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2
Q

How is STM coded according to Baddeley (1966)?

A

Acoustically (by sound)

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3
Q

How is LTM coded according to Baddeley (1966)?

A

Semantically (by meaning)

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4
Q

What is the average digit span found by Jacobs (1887)?

A

9.3 digits

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5
Q

What is the average letter span found by Jacobs (1887)?

A

7.3 letters

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6
Q

What did Miller (1956) say about STM capacity?

A

STM capacity is 7 ± 2 items, improved by chunking

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7
Q

According to Peterson & Peterson (1959), what is the duration of STM?

A

18–30 seconds

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8
Q

According to Bahrick et al. (1975), how long can LTM last?

A

Potentially a lifetime

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9
Q

What are the three stores in the Multi-Store Model?

A

Sensory Register, STM, LTM

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10
Q

What is the function of the sensory register?

A

It briefly stores information from the environment detected by your senses

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11
Q

What is needed to move information from the sensory register to STM?

A

Attention

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12
Q

What is needed to move information from STM to LTM?

A

Prolonged rehearsal

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13
Q

What is retrieval in MSM?

A

Bringing information from LTM into STM

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14
Q

What are the three types of LTM according to Tulving?

A

Episodic, Semantic, Procedural

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15
Q

What type of LTM is time-stamped and stores personal experiences?

A

Episodic memory

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16
Q

What type of LTM stores general knowledge and facts?

A

Semantic memory

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17
Q

What type of LTM stores skills and requires no conscious effort?

A

Procedural memory

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18
Q

What are the 3 slave systems

A
  • The Phonological loop
  • The Visuospatial sketch pad
  • The Episodic buffer
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19
Q

What is the role of the Central Executive in WMM?

A
  • It directs attention
  • Allocates tasks to slave systems
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20
Q

What does the Phonological Loop handle?

A
  • Processes auditory (sound) information
  • Preserves the order of words
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21
Q

What are the two parts of the Phonological Loop?

A

1) Phonological Store (inner ear)
2) Articulatory Process (inner voice)

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22
Q

What does the Visuo-Spatial Sketchpad handle?

A

Visual (images) and spatial ( location) information

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23
Q

What are the two parts of the Visuo-Spatial Sketchpad?

A

Visual Cache and Inner Scribe

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24
Q

What is the role of the Episodic Buffer?

This was added by Baddeley in 2000s

A
  • It brings together information from different parts of memory
  • Maintains the correct order of events

Make sure to state that this was later added by Baddely in 2000s

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25
What is interference theory in memory?
Forgetting occurs when similar memories compete, causing confusion.
26
What is proactive interference?
Old memories interfere with new ones.
27
What is retroactive interference?
New memories interfere with old ones.
28
What did McGeoch and McDonald find about interference?
Recall was worse when new material was similar to old material.
29
What is a strength of interference theory?
It is supported by lab studies that show cause and effect.
30
What is a limitation of interference theory?
Most supporting studies use artificial word lists, which lack ecological validity.
31
What is retrieval failure?
Forgetting occurs when we don't have the necessary cues to access a memory.
32
What is the encoding specificity principle?
Memory is most effective when information present at encoding is also present at retrieval.
33
What is context-dependent forgetting?
When the environment at recall is different from the environment at learning.
34
What study supports context-dependent forgetting?
Godden and Baddeley’s underwater diver study.
35
What is state-dependent forgetting?
Forgetting occurs when internal states at learning and recall differ.
36
What study supports state-dependent forgetting?
Carter and Cassaday using anti-histamines.
37
What is a leading question?
A question that suggests a particular answer and may distort memory.
38
What did Loftus and Palmer find in their car crash study?
The verb used (e.g. 'smashed') affected speed estimates.
39
What is post-event discussion?
When witnesses discuss the event and their memories become contaminated.
40
What did Gabbert find about post-event discussion?
71% of participants recalled information they didn’t actually see.
41
What is the Yerkes-Dodson Law?
Moderate anxiety improves recall, but too much reduces accuracy.
42
What did Johnson and Scott’s weapon focus study find?
Witnesses were less accurate when a weapon was present.
43
What did Yuille and Cutshall find about anxiety and recall?
High anxiety can lead to accurate recall in real-life situations.
44
What is the cognitive interview?
A method of interviewing witnesses to improve accuracy of EWT.
45
What are the four main techniques in the cognitive interview?
Report everything, reinstate context, reverse order, change perspective.
46
What is a strength of the cognitive interview?
It increases accurate recall compared to standard interviews.
47
What is a limitation of the cognitive interview?
It can also increase the number of incorrect items recalled.
48
[🧠 Coding] Baddeley (1966) - Aim?
To investigate how information is coded in STM and LTM.
49
[🧠 Coding] Baddeley (1966) - Procedure?
Participants learned word lists that were acoustically or semantically similar/dissimilar and recalled them immediately or after a delay.
50
[🧠 Coding] Baddeley (1966) - Results?
STM recall was worse with acoustically similar words; LTM recall was worse with semantically similar words.
51
[🧠 Coding] Baddeley (1966) - Conclusion?
STM is coded acoustically and LTM is coded semantically.
52
[🔢 Digit Span] Jacobs (1887) - Aim?
To measure digit span and assess STM capacity.
53
[🔢 Digit Span] Jacobs (1887) - Procedure?
Participants were given sequences of digits/letters increasing in length and asked to recall them in the correct order.
54
[🔢 Digit Span] Jacobs (1887) - Results?
Average digit span: 9.3 digits; 7.3 letters.
55
[🔢 Digit Span] Jacobs (1887) - Conclusion?
STM has limited capacity which varies depending on content.
56
[📦 Chunking] Miller (1956) - Aim?
To investigate the capacity of STM.
57
[📦 Chunking] Miller (1956) - Procedure?
Reviewed existing research including digit span tasks.
58
[📦 Chunking] Miller (1956) - Results?
STM holds 7 ± 2 items; chunking increases capacity.
59
[📦 Chunking] Miller (1956) - Conclusion?
STM has a limited capacity, but chunking improves memory.
60
[⏳ STM Duration] Peterson & Peterson (1959) - Aim?
To test the duration of STM.
61
[⏳ STM Duration] Peterson & Peterson (1959) - Procedure?
Participants were given trigrams and asked to count backwards before recalling after intervals.
62
[⏳ STM Duration] Peterson & Peterson (1959) - Results?
Recall fell significantly after 18 seconds.
63
[⏳ STM Duration] Peterson & Peterson (1959) - Conclusion?
STM duration is about 18–30 seconds without rehearsal.
64
[📸 Yearbook/LTM] Bahrick et al. (1975) - Aim?
To investigate the duration of long-term memory for real-life information.
65
[📸 Yearbook/LTM] Bahrick et al. (1975) - Procedure?
Tested participants' recall of high school classmates' names and faces using photos and name lists.
66
[📸 Yearbook/LTM] Bahrick et al. (1975) - Results?
After 15 years: 90% accuracy; After 48 years: 70% accuracy.
67
[📸 Yearbook/LTM] Bahrick et al. (1975) - Conclusion?
LTM can last a lifetime, especially for meaningful information.
68
[🚗 Leading Qs] Loftus & Palmer (1974) - Aim?
To test if leading questions affect EWT.
69
[🚗 Leading Qs] Loftus & Palmer (1974) - Procedure?
Participants watched car crash clips and were asked about the speed using different verbs like 'smashed' or 'hit'.
70
[🚗 Leading Qs] Loftus & Palmer (1974) - Results?
'Smashed' led to higher speed estimates than 'hit'.
71
[🚗 Leading Qs] Loftus & Palmer (1974) - Conclusion?
Leading questions can distort eyewitness memory.
72
[🗣️ Post-Event] Gabbert et al. (2003) - Aim?
To study the effects of post-event discussion on EWT.
73
[🗣️ Post-Event] Gabbert et al. (2003) - Procedure?
Participants watched the same crime from different angles and then discussed it.
74
[🗣️ Post-Event] Gabbert et al. (2003) - Results?
71% recalled information they hadn’t actually seen.
75
[🗣️ Post-Event] Gabbert et al. (2003) - Conclusion?
Memory conformity occurs when witnesses discuss events.
76
[🗡️ Weapon Focus] Johnson & Scott (1976) - Aim?
To examine the effect of anxiety on eyewitness memory.
77
[🗡️ Weapon Focus] Johnson & Scott (1976) - Procedure?
Participants witnessed a man with a pen (low-anxiety) or bloody knife (high-anxiety).
78
[🗡️ Weapon Focus] Johnson & Scott (1976) - Results?
49% correctly identified the man in low-anxiety; 33% in high-anxiety.
79
[🗡️ Weapon Focus] Johnson & Scott (1976) - Conclusion?
High anxiety (e.g. weapon focus) reduces accuracy.
80
[🔫 Real Crime] Yuille & Cutshall (1986) - Aim?
To investigate the effect of real-life anxiety on recall.
81
[🔫 Real Crime] Yuille & Cutshall (1986) - Procedure?
Interviewed real eyewitnesses to a robbery 4–5 months later.
82
[🔫 Real Crime] Yuille & Cutshall (1986) - Results?
High-anxiety witnesses had 88% accuracy.
83
[🔫 Real Crime] Yuille & Cutshall (1986) - Conclusion?
High anxiety can enhance real-life memory accuracy.
84
[🌊 Context-Dependent] Godden & Baddeley (1975) - Aim?
To test if recall is better when learning and recall environments match.
85
[🌊 Context-Dependent] Godden & Baddeley (1975) - Procedure?
Divers learned and recalled word lists on land or underwater.
86
[🌊 Context-Dependent] Godden & Baddeley (1975) - Results?
Recall was 40% worse when contexts did not match.
87
[🌊 Context-Dependent] Godden & Baddeley (1975) - Conclusion?
Context acts as a cue; mismatch reduces recall.
88
[💊 State-Dependent] Carter & Cassaday (1998) - Aim?
To test state-dependent forgetting.
89
[💊 State-Dependent] Carter & Cassaday (1998) - Procedure?
Participants learned and recalled words either on antihistamines or not.
90
[💊 State-Dependent] Carter & Cassaday (1998) - Results?
Recall was worse when internal states did not match.
91
[💊 State-Dependent] Carter & Cassaday (1998) - Conclusion?
Internal states act as retrieval cues; mismatch leads to forgetting.
92
[🧩 WMM] What is one strength of the Working Memory Model (WMM)?
Dual-task performance studies support it. People can do a visual and verbal task at the same time, showing separate systems.
93
[🧩 WMM] What is another strength of the WMM?
Brain scan studies show different brain areas active for visual and verbal tasks, supporting separate components like the VSS and PL.
94
[🧩 WMM] What is one weakness of the WMM?
The Central Executive is not well explained. It's too vague and may consist of separate components itself.
95
[🧩 WMM] What is another limitation of the WMM?
There is little direct evidence about the exact capacity of each component, especially the CE.
96
[🔁 Dual Task] What does Baddeley’s dual-task study show?
Participants struggled to do two visual tasks at once but could do a visual and verbal task together, supporting separate systems in WMM.
97
[🧩 WMM] How does the WMM differ from the MSM?
WMM suggests STM is an active processor with multiple components, while MSM sees STM as a single store.
98
[🧩 WMM] Why is the WMM considered an improvement over the MSM?
It explains more complex tasks like multitasking and is supported by more recent evidence like brain imaging.
99
What is the role of the Central Executive in WMM?
- Directs attention - Allocates tasks to slave systems - Has very limited storage capacity
100
What is a weakness of the Central Executive in the WMM?
- Too vague and poorly understood - Difficult to define its exact processes - Hard to test scientifically
101
Why might the Central Executive not be a single system?
- Evidence suggests it might include multiple components - The WMM may oversimplify it as a single controller
102
What does the Phonological Loop handle?
- Processes auditory (sound) information - Preserves the order of spoken words - Vital for speech perception and production
103
What are the two parts of the Phonological Loop?
1. Phonological Store – inner ear, stores words heard 2. Articulatory Process – inner voice, allows maintenance rehearsal
104
What evidence supports the Phonological Loop?
- Brain imaging shows left hemisphere activation during verbal tasks - Supports its role in processing auditory/verbal information
105
What is a limitation of the Phonological Loop?
- Limited capacity (approx. 2 seconds) - May not fully explain complex verbal or linguistic tasks
106
What does the Visuo-Spatial Sketchpad handle?
- Visual and spatial information (what things look like and where they are) - Temporary storage of visual patterns and spatial movement
107
What are the two parts of the Visuo-Spatial Sketchpad?
1. Visual Cache – stores visual data (e.g. colour, shape) 2. Inner Scribe – records spatial arrangement and movement
108
What supports the existence of the Visuo-Spatial Sketchpad?
- Dual-task studies show that doing two visual tasks causes interference - Supports the idea of separate visual and verbal processing systems
109
What is a limitation of the Visuo-Spatial Sketchpad?
- Hard to distinguish between visual cache and inner scribe - Their interaction is poorly explained
110
What is the role of the Episodic Buffer in WMM?
- Combines information from visual, spatial, verbal stores, and LTM - Maintains time sequencing of events - Acts as a temporary 'backup' store
111
What is a strength of the Episodic Buffer?
- Integrates visual, auditory, and LTM information - Maintains time sequencing of events
112
What is a weakness of the Episodic Buffer?
- Was only added in 2000, after original WMM - Suggests earlier model was incomplete - Still lacks detailed scientific explanation
113
What is interference theory in memory?
- Forgetting occurs because different memories interfere with one another - Common when memories are similar
114
What is proactive interference?
- Older memories disrupt the recall of newer ones - Example: You keep writing your old postcode instead of your new one
115
What is retroactive interference?
- Newer memories disrupt the recall of older ones - Example: You can’t remember your old phone number after learning your new one
116
What did McGeoch and McDonald find about interference?
- Participants who learned similar word lists had worse recall - Supports interference theory, especially when information is similar
117
What is a strength of interference theory?
- Supported by many lab studies (e.g., McGeoch & McDonald) - Lab studies control variables and use scientific methods
118
What is a limitation of interference theory?
- Artificial materials (e.g., word lists) may not reflect real-life memory use - Lacks ecological validity
119
What is retrieval failure?
- Memory is available but cannot be accessed - Often caused by a lack of cues
120
What is the encoding specificity principle?
- Tulving (1983): If a cue is present during encoding, it must also be present at retrieval - If not, forgetting is more likely
121
What is context-dependent forgetting?
- Occurs when external environment at recall is different from learning - Example: Learning on land and recalling underwater
122
What did Godden and Baddeley find?
- Divers recalled better when learning and recall took place in the same environment - Supports context-dependent forgetting
123
What is state-dependent forgetting?
- Forgetting due to internal states being different at encoding and recall - Example: Drunk vs sober
124
What did Carter and Cassaday find?
- Recall was better when participants were in the same internal state at learning and recall (e.g., both on antihistamines) - Supports state-dependent forgetting
125
What is a leading question?
- A question that suggests a certain answer - Can distort eyewitness memory - Example: “How fast were the cars going when they smashed into each other?”
126
What did Loftus and Palmer find in their car crash study?
- Participants estimated higher speeds with stronger verbs (e.g., “smashed”) - Demonstrated that leading questions can distort memory
127
What is a limitation of Loftus and Palmer’s research?
- Lacks ecological validity – watching a video is not as emotionally arousing as witnessing a real crime - Real EWTs may be influenced by anxiety, not tested here
128
What is post-event discussion?
- When witnesses discuss the event with others - May combine (mis)information, leading to distorted memories
129
What did Gabbert find about post-event discussion?
- 71% of participants mistakenly recalled information picked up from others - Compared to 0% in a control group - Shows memory conformity
130
What is a limitation of Gabbert’s study?
- Participants knew they were taking part in a study, so may have paid more attention than in real life (demand characteristics) - May not generalise to real-world eyewitness memory
131
How can anxiety affect eyewitness testimony?
- Anxiety can have both positive and negative effects on recall - Explained using the Yerkes-Dodson Law (inverted U) - Moderate anxiety improves recall, high anxiety worsens it
132
What did Johnson and Scott find about anxiety and EWT?
- Knife condition: 33% recall accuracy - Pen condition: 49% recall accuracy - Weapon focus effect reduces attention to other details
133
What is a limitation of Johnson and Scott’s study?
- May measure surprise, not anxiety - Participants could focus on the weapon because it's unusual
134
What did Yuille and Cutshall find about anxiety improving recall?
- Witnesses to a real robbery had high recall accuracy - Most anxious participants recalled 88% accurately vs 75% for less anxious
135
What is a strength of Yuille and Cutshall’s research?
- High ecological validity – real crime - Suggests anxiety can improve memory
136
Why is the effect of anxiety on EWT considered unclear?
- Mixed findings across studies - Yerkes-Dodson curve may be oversimplified - Ignores individual and contextual differences
137
What is the Cognitive Interview (CI)?
- A method of interviewing eyewitnesses to improve accuracy - Developed by Fisher and Geiselman (1992) - Based on psychological principles of memory
138
What are the four techniques used in the Cognitive Interview?
1. Report everything – even trivial details 2. Reinstate context – recall environment and emotions 3. Reverse order – disrupt expectations and schemas 4. Change perspective – recall from different viewpoints
139
What did Geiselman et al. find about the Cognitive Interview?
- CI produced more accurate recall than standard interviews - Participants recalled more correct information
140
What is a practical limitation of the Cognitive Interview?
- Time-consuming and requires specialist training - Police may not use all techniques, reducing effectiveness
141
What is another limitation of the Cognitive Interview?
- May increase incorrect information - Especially true with enhanced CI, which includes social dynamics