duration

Question 1

what was peterson and peterson study on duration of STM?

Answer 1

-preseneted them w trigrams (3 letters)
-made them count backwards before recalling
-counted for 2 secs then 3 secs
after 3 secs recall was 80%
-after 18 secs recall was 3%
STM lasts between 3 and 18 secs

Question 2

whats was the limitation to peterson and peterson study on duration of STM?

Answer 2

-recalling consonant syllables does not reflect everyday memory where what we are trying to remeber is meaningful
-lacked external valditity

Question 3

How did Bahrick study durtaion of LTM?

Answer 3

-Studied duration but focused on LTM
-presented 392 american Ps (17-74)
-they had to recall their classmates using high school year books

Question 4

what was Bahrick study of durtaion of LTM findings?

Answer 4

-up to 15 years after grad recall was strong (90%)
-but declined w age
-recongiton rather than actually remembering their names
-memories were long lasting but hard to remember names
-some older Ps were able to recall everyhing suggetsing LTM lasts a lifetime

Question 5

what was the strenght of bahricks study of duration of LTM?

Answer 5

-High external valdiity
-investigated meaningful memories
-(e.g names and faces)
-when LTM done on meaningless pictures, recall was lower (shepard 1967)
-bahrick had more real estimation of LTM duration