memory Flashcards
Who carried out research into coding (similar/dissimilar words)?
Baddeley
What did Baddeley’s research on coding show?
STM = acoustic
LTM = semantic
A03 of coding = separate memory stores
-Strength
-Identified LTM & STM
-Supports multi-store model
Who carried out research into capacity (digit span)?
Jacobs
What did Jacobs’ research on capacity show?
-Mean digit span = 9.3 items
-Mean letter span = 7.3
Who carried out research into capacity (span of memory and chunking)?
Miller
What did Miller’s research on capacity show?
STM is about 7 items , plus or minus 2
Putting items together = expands capacity of STM
What did Peterson (x2) find about duration of STM?
-Recall for STM = about 18 seconds without rehearsal
Who carried out research into duration of STM?
Peterson and Peterson
Who carried out research into duration of LTM?
Bahrick et al
studied yearbooks
What did Bahrick find about duration of LTM?
Face recognition = 90% (15 yrs)
Free recall = 60% (15 yrs)
Face recognition = 70% (48 yrs)
Free recall = 30% (48 yrs)
What did Bahrick find about duration of LTM?
Face recognition = 90% (15 yrs)
Free recall = 60% (15 yrs)
Face recognition = 70% (48 yrs)
Free recall = 30% (48 yrs)
What did Bahrick find about duration of LTM?
Face recognition = 90% (15 yrs)
Free recall = 60% (15 yrs)
Face recognition = 70% (48 yrs)
Free recall = 30% (48 yrs)
A03 of duration = Meaningless stimuli in STM study, P (x2)
-Limitation
-Petersons used consonant syllables
-Lack external validity
A03 of duration = High external validity LTM
-Strength
-Bahrick et al = meaningful stimuli
-better recall than meaningless stimuli
