Studied by 0 people
Looks like no one added any tags here yet for you.
memory
capacity to retain learned info over time
Atkinson-Shiffrin Model
sensory → STM → LTM
STM
short term memory
LTM
long term memory
Atkinson-Shiffrin Model: sensory - capacity
unknown/undefined but holds more than STM
Atkinson-Shiffrin Model: sensory - duration
amount of time needed to process info & do something else w/ it
Atkinson-Shiffrin Model: sensory - visual info duration
1 sec
Atkinson-Shiffrin Model: sensory - auditory info duration
5 sec
Atkinson-Shiffrin Model: sensory - coding
how info is processed (sensory codes)
Atkinson-Shiffrin Model: STM - capacity
7 ± 2 items
Atkinson-Shiffrin Model: STM - duration
20 secs to process; will fade otherwise
Atkinson-Shiffrin Model: LTM - capacity
undefined
Atkinson-Shiffrin Model: LTM - duration
lifetime
Atkinson-Shiffrin Model: LTM - coding
sensory & semantic
digit span task
shows STM capacity
in a digit span task, ppl were asked to
repeat a series of numbers & letters
serial positioning task
tests short-term store
when things are listed in a series
the order they appear in matters
in a serial positioning task, ppl remember words best from
the beginning or the end
primacy effect
more things are remembered in the beginning
primacy is due to
rehearsal of the first ±7 words
recency effect
more things are remembered in the end
recency is due to
words being stored buffers
interference
unable to remember info b/c they don’t get rehearsed/stay in the buffer
interference is why words in the middle of a list are
often forgotten
Baddeley’s Working Memory Model
ppl who had competing tasks had poorer memory if both tasks used the same info
storehouse
visual & spatial info
phonological loop
linguistic info
visuospatial sketchpad
visual/spatial info
episodic buffer
catch-all for other kinds of memory, neither linguistic or visuospatial
central executive
allocates resources to loop or sketchpad
divisions of LTM: explicit
consciously commit something to memory (declarative)
divisions of LTM: explicit - episodic
self-referential memory; remembers events (specific episodes)
divisions of LTM: explicit - semantic
general info about words; language & concepts (updated less)
divisions of LTM: implicit
passive memory; did not try to memorize (nondeclarative)
divisions of LTM: implicit - procedural
any skill/how-to
divisions of LTM: implicit - perceptual
info directly from sense
amnesia
pathological loss of memory
global amnesia
info from many domains is lost
material specific amnesia
memory from one type of domain is lost
anterograde amnesia
memory after precipitating event is lost
retrograde amnesia
memory before precipitating event is lost
medial temporal lobe damage
significant memory loss
thalamic amnesia
could result in severe amnesia
patient HM had
severe anterograde, global amnesia
patient HM’s amnesia resulted from
damage to medial temporal lobe (lost hippocampus on both sides & cortex of medial temporal lobe)
patient HM’s amnesia was caused by
a surgical removal of parts of his brain to treat seizures
patient HM had good
semantic memory & procedural memory
patient HM had bad
episodic memory
patient HM had decent
short-term memory, but it couldn’t get better
patient HM couldn't form
short term memories that would lead to long term memory
