duration

Question 1

what is duration?

Answer 1

length of time info that can be stored

Question 2

what psychologists are involved in capacity ?

Answer 2

peterson and peterson 1959
bahrick et al 1975

Question 3

outline peterson and petersons procedure?

Answer 3

24 students were given a consonant syllable (e.g YCG) to recall and a 3 digit number to count backwards from
retention interval was varied :3,6,9,12,15 or 18 seconds

Question 4

outline their findings

Answer 4

after 3 seconds -average recall was about 80%
after 18 seconds it was about 3%
STM duration without rehearsal is up to 18 seconds

Question 5

outline Bahrick et al procedure

Answer 5

392 american pps aged 17-74
recognition test-50 photos from high skl yearbooks
free recall test - pps listed names of their graduating class

Question 6

outline his findings

Answer 6

recognition test- 90% accurate after 15 years , 70% after 48 years
free recall rest-60% recall after 15 years, 30% after 48 years