Cognition Flashcards
memory
organisation storage and retrieval of information, internal records of previous events or experience, involves paying attention to surroundings and converting it into form that can be stored (encoded) in brain and retrieved when required
multi-store model of memory
Atkinson and Shifrin, perception -> sensory memory store (echoic memory (3-4s)or iconic memory (1-2s)) -attention> short term memory (30s) if rehearsal occurs to keep in short term memory then encoding occurs into long term memory, if no rehearsal occurs it is forgotten, in LTM if unable to retrieve it is forgotten,
encoding
changing info into a form that can be stored in the long term memory (attention to information is necessary)
sensory memory
information stored for a short period (30s), stores all incoming sensory information in memory registers for different senses
short term memory
information that has been attended to from sensory info, stored for a short period of time (30s) in STM, if rehearsed it is encoded into LTM, holds all current into (thoughts/experiences), can also retrieve info from LTM
long term memory
relatively permanent storage of info, unlimited amount of capacity, forgotten if unable to retrieve
Iconic/echoic memory
iconic stores visual memory for up to 1-2s
echoic stores all auditory memory for up to 3-4s
types of rehearsal
maintenance rehearsal: meaningless rote repetition of materials to be remembered (saying over and over again 1, 1, 1, 1, to remember 1)
elaborating rehearsal: applying meaning to new words in order to retain them in memory e.g 2207 = birthday so more likely to remember number sequence
chunking: materials combined into larger meaningful group e,g cat, dog, horse = animals rather than cup,phone,star (unrelated so harder to remember)
LTM- procedural memory
“How to” of memory, way you do things e.g wrtiging name, how to ride a bike, occurs automatically/ unconsciously, also known as implicit memory not conscious
LTM - declarative memory
“What of memory, recalling facts/events (known as explicit memory requires conscious effort to recall
- episodic memory: memory of own set of autobiographical events/ personal experiences linked to sensations and feelings/emotions (birthday party memories)
- semantic memory: factual knowledge obsessed about outside world (multiplication tables, rules etc)
working model of memory - specifically STM Baddeley and Hitch
central executive: boss/leader of STM, controls and coordinates other components (sketch pad, loop, buffer) controls attention and sends incoming info to relevant areas, briefly stores all sensory info
- visuospatial sketch pad: stores and manipulates information of visual & spatial nature (slave system to central executive)
- phonological loop: other slave system to central executive, sites / manipulates auditory information, processes incoming info, stores/plans, speech production
episodic buffer: added later, links info across sketchpad and loop, forms integrated units of visual,spatial and verbal information with time e.g memory of story/movie
measures of memory
recall: involves being able to access info without being cued e.g short answer questions
recognition: involves identifying after experiencing it again e.g multiple choice questions
relearning: involves relearning information that has previously been learned (often makes it easier to remember/retrieve info in future, can improve strength of memories)
forgetting: failure to access info that has previously been stored in memory
retrieval failure theory
cue dependent forgetting: info is in memory it just can’t be accessed, failure to use correct/appropriate cues at a certain time
TOT: tip of tongue phenomena
interference theory
when two peices of information are too similar it oeads to interference causing us to forget the difference
- proactive interference: interference of old memories on retrieval of new information
- retroactive interference: new info interferes with ability to recall old information
motivated forgetting
strong desire to forget certain things because memory is too traumatic, anxiety provoking, self protection defence
- repression: keeping distressing/unpleasant thoughts buried in unconscious and prevent from entering conscious (occurs unconsciously)
- suppression: deliberate effort to keep distressing thoughts out of conscious awareness