duration of STM

Question 1

what is duration?

Answer 1

the LENGTH of time info can be held in memory

Question 2

who did research on duration?

Answer 2

Peterson and Peterson

Question 3

what was petersons procedure on duration?

Answer 3

present participants with trigams )3 consonannts e.g. ZTM)

count backwards in 3s from a 3 digit number

asked to stop after varying periods of time e.g. 3,6,9, seconds interval time, and RECALL the trigams.

Question 4

what were the findings of petersons study on duration?

Answer 4

after 3 seconds, average recall was 80%

after 18 seconds, it was 3%

Question 5

what is the duration of STM?

Answer 5

18-30seconds unless rehearsed.

Question 6

what is one issue with peterson and petersons research?

Answer 6

it lacks mundane realism.

Getting people to count backwards from a 3 digit number is an ARTIFICIAL task.

therefore, this lowers the EXTERNAL validity, making it harder to GENERALISE elsewhere.