STM and LTM Flashcards
what is the evidence for the capacity of STM?
Jacobs digit span. A string of digits is placed, cover all except the first one and say it, then shut your eyes and recall. Do the same with 2, then 3 etc
What is the evaluation for the capacity of STM?
Jacobs suggested it may be easier to recall numbers as there are only 9 whereas there are 26 letters. Letters take longer to say
what is the duration of the STM?
18-30seconds
what is the evidence for the duration of the STM?
Peterson and Peterson. Shown trigrams briefly and then asked to count backwards in 3’s to prevent rehearsal. Interval between saying and recall increased by 3 eavh time
what is the evaluation of duration of STM?
validity- it is only testing one type of memory
lab experiment- demand characteristics
what is the encoding of STM?
STM uses a acoustic code as they had difficulty remembering acoustically similar words
What is the evidence for the encoding of STM?
Baddeley gave participants lists of words that were semantically similar or dissimilar and words that were acoustically similar or dissimilar and they had to recall
what is the evaluation for the encoding of STM?
STM appears to rely on acoustic code however research has shown that visual codes are also used in STM
what is the duration of LTM?
2 hours-100 years +
what is the evidence for the duration of LTM?
Bahrick et al. asking people of various ages to put names to faces from their high school year book, 48 years on, people were 70% accurate
what is the LTM encoding?
LTM encodes in semantic encoding as it led to muddled responses
what is the evidence for encoding of LTM?
Baddeley gave participants lists of words that were semantically similar or dissimilar and words that were acoustically similar or dissimilar and they had to recall
