What is representational mapping, who’s the guy and what does it do?
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.
Give an example of bad design and why it is bad.
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.
Explain stimuli, short term sensory store and perception.
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).
What are the elements of the Human Information Processing Model (Wickens, 1998).
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)
Why are perceptions influenced by LTM?
When we perceive a dog as a dog- we draw on our LTM.
Give examples of (1) Decision Making and (2) Response Selection?
(1) When someone asks you a question.
(2) Jumping when someone puts an ice cube down your back.
What is the structure of the Multi-Store Model of Memory (Atkinson & Shiffrin, 1968)?
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)
Go into more detail about Sensory Stores (Multi-Store Model of Memory).
-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)
Go into more detail about the short-term store (Multi-Store Model of Memory)
Go into more detail about the long-term store (Multi-Store Model of Memory)
What is the capacity of STM?
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
What are primary and recency effects?
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
What are the components of the working memory model (Baddeley & Hitch)
Explain the central executive
What are the criticisms for the Modal Model of Memory?
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.
Explain the working memory model
Explain the visuo-spatial sketchpad
Specialised for spatial and/or visual coding – holds information in an analoge, spatial form.
Explain the phonological loop
Holds information in a phonological (i.e. speech-based) form
Explain the episodic buffer.
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).
What are the implications for design (Working Memory Model)
What are the three types of LTM?
What is Semantic Memory?
What is Episodic Memory?
What is Procedural Memory?