research on duration of STM

Question 1

what is the research by Peterson and Peterson

Answer 1

used consonant syllables (YCG) and a filler task of counting backwards for differing length of time
the amount they could recall shows the duration of STM

Question 2

what were the results from Petersons and Petersons study

Answer 2

after 3 seconds = average recall 80%
after 18 seconds= average recall 3%

STM was around 18 seconds unless the information was repeated over and over

Question 3

evaluate the research of Peterson and Peterson on duration of STM

Answer 3

• uses artificial materials

so the study lacks ecological validity
even though sometimes we do have to recall useless information like phone numbers