Memory
- Created by: Philosophy Emma
- Created on: 21-11-19 11:24
Sensory memory
The first step of memory processing
Sensual memory is a conceptual storage space for sensory information
The time limit for how long memories are stored in sensory memory is short
Visual is less than one second
Auditory is a few seconds
Iconic store
the visual sensory memory register pertaining to the visual domain and a fast-decaying store of visual information
Echoic store
the sensory memory that registers specific auditory information (sounds)
Once an auditory stimuli is heard, it is stored in memory so that it can be processed and understood
Unlike visual memory, in which our eyes can scan the stimuli over and over, the auditory stimuli cannot be scanned over and over. Since echoic memories are heard once, they are stored for slightly longer periods of time than iconic memories
Short term memory
The second step in memory storage
Limited in duration, only stored for a few seconds if unrehearsed
The here and now, the information we’re currently dealing with
The content of short term memory is constantly changing
Can store 7 +/- 2 unrelated items at the same time
Actively engaged
Temporarily stores information and processes info
Also known as working memory, because short term memory sounds too passive
Phonological loop
One of Baddeley's working memory components
Where we store sound information
Central executive
One of Baddeley's working memory components
planning, controlling, monitoring sequence of actions
Allocating attention
Oversees the encoding of information
Episodic buffer
One of Baddeley's working memory components
Temporary storage space for info
Binding multisensory info, time
Visuospatial sketchpad
One of Baddeley's working memory components
Mental representations of visual and spatial info
Long term memory
Unlimited store
Any information that stays with us that we commit to memory and can use at a later time
Explicit long term memory
· Declarative
- Episodic (tied to a time and place)
- Semantic (knowledge)
Implicit long term memory
· non-declarative
- Procedural (skills)
- Conditioning (learned associations)
- Priming (prior knowledge fills in the blanks, expectations on what to follow)
Serial position effects
Primacy effect: more likely to remember the words in the beginning of a word list
Enter the long term memory because they have more time to be rehearsed
Recency effect: last words in a word list are remembered
The words in the middle enter the working memory but are pushed out because the capacity is limited
Encoding
information is processed so that it can be stored for later retrieval
Can be effortful (intentional, such as organising and rehearsing) or automatic (incidental, such as location, frequency and/or sequence of events, etc, unintentional encoding that requires minimal attention)
Storage
placing newly acquired information into working memory or long term memory for later retrieval
Retrieval
re-accessing information from the past, which has been encoded and stored
Semantic network
spreading activation of related concepts, one concept primes another, we naturally link related concepts together
Flashbulb memories
a specific type of autobiographical memory that occurs when we come across shocking information, when we will remember the context quite clearly
Dual coding theory
we can combine different memory cues to enhance encoding
The more strategies we use, the more effect it has
Reconstructive memory
Our memory isn’t an exact replica of what happened
Memory is an approximation, a reconstruction of the past that depends on our interpretation of the details
Memory is reconstructed to conform to what we already know/belief/expect
Schemas
mental representations of what we expect in general from an event
We extract the gist of information presented to us
We use schemas to fill in the gaps to make sense of the information
Prior knowledge/expertise plays a role in schemas
Schema-consistent and inconsistent information is maintained equally well over time
Schema-irrelevant information decayed much earlier
Forgetting
Transcience (memory decays over time)
Blocking (one example is tip-of-the-tongue, forgetting may occur if the correct cues not present at retrieval; temporary inability to retrieve information that is stored in memory)
Absentmindedness (lapses in attention have an effect on the information we memorise)
Distortion
Misattribution (source confusion, assigning a recollection or an idea to the wrong one)
Suggestibility (misleading info, people can be lead to remember different things depending on how events are described)
Bias (knowledge, beliefs and feelings influence recollection of experiences; consistency bias, change bias, egocentric bias, etc)
Acquisition failure
information that isn’t attended to isn’t encoded (selective attention is the process of focusing attention on certain stimuli when several stimuli occur simultaneously)
Availability/consolidation failure
displacement theory
working memory holds 7 +- chunks of information, once it’s full new information pushes the old information out, information is forgotten because it’s no longer available
Trace decay theory
memory traces (engrams) decay over time, perhaps due to metabolic processes
the probability of remembering something depends on how much time has passed since learning
Ebbinghaus' forgetting curve
recent events are easier to recall, but the rate of forgetting is also quickest shortly after learning, information is forgotten because it’s no longer available
Interference theory
ability to remember information can be affected by information that has been/will be learned
Pro-active interference: previously learnt information will disrupt learning new memories
Retro-active interference: new memories will disrupt previously learnt information
Retrograde amnesia
information prior to trauma is forgotten, no problem forming new memories
Anterograde amnesia
difficulty acquiring new memories, while old memories are intact
Context reinstatement
retrieval can be improved by re-creating the same state of mind that accompanied learning
Infantile amnesia
Adults rarely recall events before the age of 3
Children 5-10 years frequently recall events when they were younger than 1
Earliest episodic memory is influenced by current age
Memory increases with development and maturation
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