STM Duration Key Study

Question 1

What is rehearsal

Answer 1

Saying information over and over again to yourself to keep it in your STM for more than a few seconds
It will keep information in your STM then transfer it to your LTM

Question 2

Who were the researchers of the duration of memory STM and LTM

Answer 2

Researcher -Peterson and Peterson 1959 (STM)
researcher- Bahrick et al 1975 (LTM)

Question 3

Key study -duration of memory STM Description (AO1)

Answer 3

Peterson and Peterson studied the duration of memory where they had tested 24 student PPs and asked them to remember a consonant syllable and a 3 digit number
They had a task to count backwards from the 3 digit number
They had to recall at 3,6,9,12,15 and 18 seconds
At 3 seconds it shows that the recall was about 90% however at 18 seconds the recall was at 2%
this shows that when rehearsal isn’t practiced the duration of STM is 30 seconds or less

Question 4

Key study -duration of memory Evaluation (AO3) weakness

Answer 4

P-one weakness of Peterson and Peterson study is that it isn’t generalised
E-evidence for this is that there were only 24PPs who are all students so they only make up a small section of society and have to use their memory for their studies
E-this shows that it lacks representation to the wider population such as middle aged and older as they don’t used their memory as much so the results can’t not be applied to non-students

Question 5

Key study -duration of memory Evaluation (AO3) strength

Answer 5

P-however one strength of this research is that it can be replicated
E-evidence for this is that another researcher followed the method amongst a group of people and the results were similar
E-this shows that research into STM duration by Peterson and Peterson is reliable

Question 6

Key study -duration of memory Evaluation (AO3) weakness

Answer 6

P:on the other hand another weakness of the research is that it is not true to life
E-evidence for this that the PPs repeated syllables and constant which you wouldn’t use in everyday day life
E-this shows that the research lacks ecological validity and doesn’t test STM duration in a everyday situation

Question 7

Key study -duration of memory Evaluation (AO3) strength

Answer 7

P-additionally one strength of the Peterson and Peterson study is the research tests for the duration of STM
E-evidence for this is the researchers found out how long STM is by asking the Pps to recall what the remember at 3 second intervals
E-this shows that the study has internal validity as the results conclude the duration of STM as 30 second