duration of STM

Question 1

what is duration, capcaity and encoding

Answer 1

duration-how long info can be held for

capcity-how much info can be held

encoding-form of info which is stored

Question 2

duration of STM study

Answer 2

peterson and peterson
recurited 24 uni students
presnted them with nonsense triagram and 3 digit number
nonsense triagram was exactly that-nonsense meaning have no meaning to particpants
then asked to count back in 3s to prevent rehersal-no longer recalling triagram
after 3,6,9,12,15,18 intervals, had to recall triagram

results were that when interval was only 3 seconds long, 90% of traigams were remebered
18 second interval, only 2 percent recalled

shows stm can rapidly dissapear when rehersal is prevented

Question 3

strength of study of duration of stm

Answer 3

replicable-due to fact is used a high;y standardised procedure with high control over variables
e.g triagmas being nonsense and all ps having to count back from 3s makes it easy to repeat the study with same procedure