Lecture 2: Human Information Processing and Memory Flashcards

(41 cards)

1
Q

What is representational mapping, who’s the guy and what does it do?

A

The relationship between the control device and the thing we want to control.

Don Norman (Norman’s Door).

-It aids memory and reduces error.
- Ties into skeuomorphism (the floppy disk is the save icon in Microsoft Word) —>Putting in design features to remind people what their purpose is.

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2
Q

Give an example of bad design and why it is bad.

A

The chain on blinds.

Poor Mapping: The relationship between the control (left/right chain) and the system response (up/down movement) is not intuitive.

Lack of Affordance: Both chains look and feel the same, providing no clue about their functions.

Insufficient Feedback: Only discover whether you’ve pulled the correct chain after the blind starts moving.

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3
Q

Explain stimuli, short term sensory store and perception.

A

Stimuli
- Photons
-Tactile pressure
-Single saccades with your eyes

Stimuli are processed by senses held in the STSS.

STSS
- Very short- milliseconds
- Doesn’t always enter our perception

Perception
- The meaning of the signal (derived from past experience - from LTM).

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3
Q

What are the elements of the Human Information Processing Model (Wickens, 1998).

A

Top layer:
- Attention Resources

Middle layer:
1. Stimuli
2. Short-term sensory store
3. Perception
4. Thought decision making
5. Response selection
6. Response execution
7. Response

Working memory (under thought decision making)

LTM (under perception and working memory)

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4
Q

Why are perceptions influenced by LTM?

A

When we perceive a dog as a dog- we draw on our LTM.

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4
Q

Give examples of (1) Decision Making and (2) Response Selection?

A

(1) When someone asks you a question.

(2) Jumping when someone puts an ice cube down your back.

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5
Q

What is the structure of the Multi-Store Model of Memory (Atkinson & Shiffrin, 1968)?

A

Sensory Stores links to Short Term Store through Attention (underneath = decay).

Short Term Store links to Long Term Store through Rehearsal (underneath = displacement)

Long Term Store (underneath = Interference)

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6
Q

Go into more detail about Sensory Stores (Multi-Store Model of Memory).

A

-holds information very briefly
-modality specific (1) Iconic (visual- stimulus delay occurs within ~0.5 sec), (2) Echoic (auditory- stimulus delay occurs within ~2 sec)

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7
Q

Go into more detail about the short-term store (Multi-Store Model of Memory)

A
  • Transferred information previously held in sensory store which has been attended to​
  • Very limited capacity​
  • Susceptible to loss of information due to distraction​
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8
Q

Go into more detail about the long-term store (Multi-Store Model of Memory)

A
  • Information “rehearsed” in Short term store transferred​
  • Potentially “unlimited” capacity​
  • Can hold information over extremely long periods of time
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9
Q

What is the capacity of STM?

A

Miller, 1956
- Magic Number “seven plus or minus two”
- “Chunks” of information are easier to remember (e.g. clustering numbers in a phone number together)

Simon (1974)
- Number of chunks in span is less with larger chunks than with smaller chunks (concerned with discreet data)

Cowan (2000)
- Argued that when rehearsal and LTM are eliminated (e.g. presenting cues rapidly to avoid rehearsal) capacity of STM is only about 4 chunks.

Bays & Hussain (2008)
- Argued that memory has an analogue precision; more precision, less items

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10
Q

What are primary and recency effects?

A

When you can recall items at start and end of a list better than those in the middle.

Primary - given to us first
Recency - at the end

Theorised to be due to LTM- primary - rehearsal - and STM - recency - recall

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11
Q

What are the components of the working memory model (Baddeley & Hitch)

A
  1. Central executive
  2. Visuo-spatial sketch-pad
  3. Episodic buffer
  4. Phonological loop
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11
Q

Explain the central executive

A
  • Modality-free
  • Resembles attention – assigns attentional resources to other systems & resists distractions.
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11
Q

What are the criticisms for the Modal Model of Memory?

A
  • Oversimplified
  • Evidence that the short term store may behave differently for different stores
  • Fail to explain how information stored in the long term store- rehearsal is not always needed
  • Concentration on structure of memory rather than process involved in memory and learning
  • Vague and poorly understood neural mechanisms.

Evidence that short term store may behave differently for different senses – as we’ll see with Baddeley and Hitch, 1974 model – working memory with three different components; there are also several LTM systems.

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12
Q

Explain the working memory model

A
  • Replace the concept of STM with “working memory”
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13
Q

Explain the visuo-spatial sketchpad

A

Specialised for spatial and/or visual coding – holds information in an analoge, spatial form.

13
Q

Explain the phonological loop

A

Holds information in a phonological (i.e. speech-based) form

14
Q

Explain the episodic buffer.

A

Used to retain memories of units of visual, spatial, and verbal information and chronological ordering (e.g., the memory of a story or a movie scene).

15
Q

What are the implications for design (Working Memory Model)

A
  • Limit demands on working memory
  • Consider whether users need to remember information or not for effective operation
  • Don Norman “Knowledge in the Head” vs “Knowledge in the World” (Don Norman, Design of Everyday Things, Chap 3)
  • “Putting your password in the world is the antithesis of security; nevertheless, according to this PEW report, against all security rational, 49% of American users write down their passwords to keep track of them.”
16
Q

What are the three types of LTM?

A
  1. Semantic Memory
  2. Episodic Memory
  3. Procedural Memory
17
Q

What is Semantic Memory?

A
  • Structured record of facts, meanings, concept and knowledge
  • Can be consciously recalled
  • Independent of personal experience and spatial/temporal context
  • “The module code is MMME4054”
18
Q

What is Episodic Memory?

A
  • Memory of experiences and specific events
  • Semantic memory can be derived from episodic memory E.g. Using a story to underpin a fact to improve its memorability
  • “In the first lecture, Kyle showed a silly video about Norman doors”
19
Q

What is Procedural Memory?

A
  • Unconscious memory of skills and how to do things
  • Aids ‘automatic’ behaviour
  • I know how to write, ride a bike, touch-type, etc
20
What is Eyewitness Testimony?
- Loftus et al. (1979) - If witness is exposed to new post-event information this may affect recall of events - Witness memory can be altered by the type of questions posed during questioning.
21
More detail of the Loftus and Palmer study.
- 7 films of traffic accidents, ranging in duration from 5 to 30 seconds, were presented in a random order to each group. - After watching the film participants were asked to describe what had happened as if they were eyewitnesses. They were then asked specific questions, including the question “About how fast were the cars going when they (smashed / collided / bumped / hit / contacted) each other?” - The estimated speed was affected by the verb used
22
What are the explanations for the Loftus and Palmer study?
1. Response-bias factors: The misleading information provided may have simply influenced the answer a person gave (a 'response-bias) but didn't actually lead to a false memory of the event. For example, the different speed estimates occur because the critical word (e.g. 'smash' or 'hit') influences or biases a person's response. 2. The memory representation is altered: The critical verb changes a person's perception of the accident - some critical words would lead someone to have a perception of the accident being more serious. This perception is then stored in a person's memory of the event.
23
How do traumatic events alter our memory?
- If you are highly aroused by fear, emotion helps you store things in your memory better, in a storage process called consolidation that depends on the interaction of the amygdala and hippocampus. - Emotion gives you stronger confidence in your memory than it does in the accuracy of that memory. 9/11 attack: 63% accuracy a year later 57% after 3 years Participants were better at memories for the facts of the attack than they were for their personal recollections.
24
What is the Schema Theory?
- Schemata = organized mental structures that aid the learners’ ability to understand and associate what is being presented to them - What is normal, typical, relevant or consistent with pre-existing knowledge will be remembered better than what is unexpected, bizarre or irrelevant (maybe?) - But – also Brewer and Tenpenny (1996) – distinctiveness mechanism i.e. tendency to remember what is bizarre
25
What is Prospective Memory?
Prospective memory refers to the ability to remember to carry out intended actions in the future, such as remembering to attend a meeting or take medication at a specific time.
26
What are the types of prospective memory?
1. Time-based prospective memory: Remembering to do something at a particular time (e.g., "I need to call someone at 3 PM"). 2. Event-based prospective memory: Remembering to perform an action when a specific event occurs (e.g., "When I see my colleague, I need to give them the report").
27
What are the key components of prospective memory?
- Intention formation: Formulating the intention or goal (e.g., planning to buy groceries after work). - Retention: Keeping the intention in memory during the delay between forming the intention and executing it. - Cue detection: Recognizing the appropriate time or situation (a cue) that triggers the intended action. - Execution: Carrying out the intended action once the cue is detected.
28
What are the challenges with prospective memory?
- Requires self-monitoring to detect when the cue for the task arises. - Can be disrupted by distractions or changes in routine, especially with time-based tasks. - Cognitive aging and conditions like Alzheimer's disease can impair prospective memory performance.
29
What are the cognitive processes involved in prospective memory?
- Prospective memory tasks depend on a combination of working memory, executive functions, and attentional processes.
30
How can we improve prospective memory?
- External aids: Using reminders like alarms, notes, or apps to help trigger memory. - Implementation intentions: Creating specific action plans that link cues to tasks ("If X happens, then I will do Y").
31
What are the criticisms of prospective memory?
- The PAM (Preparatory Attentional and Memory) theory suggests that prospective memory tasks require continuous maintenance of an intention from formation to execution. Reese and Cherry (2002) showed that only 2% of participants thought about their intention when interrupted, casting doubt on this theory for routine tasks. Einstein and McDaniel's reflexive-associative theory (1990) found that intentions often "pop" into mind automatically. This theory proposes that an association is formed between a cue and an action, and when the cue appears, the associative memory system automatically triggers the retrieval of the intended action without needing constant conscious monitoring.
32
What are the two types of interference?
1. Proactive 2. Retroactive
33
What is proactive interference?
- Old memories interfering with learning new information. - If I already know how to type using a QWERTY keyboard layout, learning DVORAK may be harder because the old memories interfere!
34
What is retroactive interference?
- learning new things can make it harder to recall old information. - Say I now start learning DVORAK and am using it for months, I may find it harder to go back to QWERTY
35
What are the implications for design - memory?
- Minimise demand on memory - Put more knowledge “in the world” - Different types of long-term memory - Implication of memory types for design of information during use, and expectations for training​ - Using meaning to support transfer into long term memory​ - Ensuring rehearsal possible if necessary to transfer to long term memory​ - Support transfer to semantic memory by means of episodic information - Could similar processes interfere?
36
What is other memory research?
- Effortful recall practice improves recall. After reading a text, one group reread the text several times (crammers), another group took practice tests (testers). One immediate testing the first group did better, but delayed tests of more than a week testers did better. - Roediger & Karpicke (2006) - Effortful recall, “interleaving” (different subjects) and spaced retrieval practice stops memory decay. - Cepeda et al (2006) - Mixing problems together, is harder, and therefore helps later recall - Rohrer (2007) - “Make it Stick”, Brown, Roediger, McDaniel. 2014