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
decay theory
forgetting occurs bc memory trace tends to gradually fade away/decay overtime, contributes to loss of info in sensory memory and STM via displacement
organic theories of forgetting
forgettingm amnesia or memory loss occurs due to some type of brain damage e,g blow to head, misuse of alcohol/drugs, ageing etc, damage to different areas of the brain can lead to different forms of memory loss
learning
relatively permanent change often of behaviour, that occurs as a result of experience
stimulus response theories
early approaches explore learning as a result of humans/animals responding to stimuli in the environment, shift occurs from behaviour being result of external stimuli to a focus on internal cognitive mental processes
classical conditioning
an associations forming between two stimuli, one of which is not normally associated with the response, therefore appearance of stimulus alone results in response behaviour
- conditioning: association made by learner between a stimulus and response
- stimulus any variable present in environment that may trigger a response
- response: action/behaviour that is exhibited
classical conditioning components
neutral stimulus: any stimulus that
that produces no relevant responses prior to classical conditioning
unconditioned stimulus: any stimulus that consistently leads to reflexive response (unlearned stimulus)
conditioned stimulus: previously neutral stimulus that, after becoming associated with the unconditioned stimulus, eventually comes to trigger a conditioned response.
unconditioned response: unlearned, reflexive, involuntary response to a stimulus
conditioned response: reflexive, involuntary response that has become associated with a stimulus by which it was not previously caused
unconditioned response -> conditioned response
neutral stimuli -> conditioned stimuli
classical conditioning effects
acquisition: initial stage of learning when a response is first established and gradually strengthened, during this phase a neutral stimulus is repeatedly paired with unconditioned stimulus
extinction: when occurrences of conditioned response decrease/disappear, occurs because not enough conditioning was conducted or too much time passed from when last conditioned
spontaneous recovery: learned response an suddenly re-emerge even after period of extinction (period of rest/lessened response)
stimulus generalisation: tendency for conditioned response to evoke similar responses to other stimuli after response has been conditioned (e.g conditioned stimulus=white mouse, stimulus generalisation=white rabbit, ferret, rat etc)
stimulus generalisation: ability to differentiate between a conditioned stimulus and other stimuli that have similar characteristics that have not been paired with unconditioned stimulus
operant conditioning definition
learning explained by consequences
reinforcement/punishment
reinforcement: causes behaviour to occur more frequently
punishment causes behaviour to occur less frequently