lecture 5 Flashcards
Peterson and Peterson procedure
recall trigrams - meaningless 3 consonant syllables. to prevent rehearsal count backwards in threes.
Peterson and peterson results
rapid increase in forgetting . after 3 seconds 80% recalled correctly, after6 sec= 50% after 18 sec less than 10%
Atkinson and Shiffrin
multi store model
info flows though a series of stores
sensory register, STM,LTM
Sensory store duration capacity and encoding
duration - quarter to half a second
capacity- all sensory experience
encoding - sense specific
info is lost rapidly
STM store duration, capacity , encoding
0-18 sec, 7+or-2 , auditory
info is lost via displacement and maintained by rehearsal
LTM duration, capacity and encoding
unlimited/permanent, unlimited , encoding is mainly semantic
serial position effect
lists of words remembered near the start and end of lists
difficult to remember words in the middle
primacy effect
able to remember words at the start
recency effect
able to remember words near the end
why can words at the start be remembered
more likely to be stored in LTM due to rehearsal
why can words at the end be remembered
more likely to be in STM as its still recent
glanzer and cunitz
2 groups learned same word lists. 1 group recalled immediately or after 30 seconds. delaying recall prevented the recency effect
problems with STM store
recency effect can be observed even with a delay
no total loss of memory if STM store is lost
no autonomic improvement with rehearsal
recency effect can be observed even with a delay
recency effect is observed if there is a delay after EVERY item not just the last one
recency effect appears to reflect
how distinctive the end of the list is not how recent it is
no total loss of memory if STM store is lost
if the STM store provides the only access to the LTM store - loss of STM should cause LTM loss