CODING, CAPACITY AND DURATION OF MEMORY Flashcards
how can Baddeley’s research on coding be criticised?
it was artificial stimuli (word lists)
what does the artificial nature of Baddeley’s research mean?
we need to be cautious when we are generalising results because the things we code in our brain are meaningful
since the word lists in Baddeley’s research is artificial it means research into coding has limited…
application as even semantic coding can be used for STM if they are meaningful
what is a weakness of Jacob’s research into digit span?
confounding variables
what do confounding variables in Jacob’s study decrease?
the internal validity
what confounding variables could there have been in Jacob’s research?
distracted due to lack of control since study was in 1887 when psychology was first emerging, lacks scientific credibility
who criticised that there is 7 chunks in memory?
Cowan
what did Cowan do to criticise Miller chunking?
reviewed other research and concluded that capacity of STM is only 4 chunks
how can Peterson and Petersons research be criticised?
stimulus was artificial, doesn’t reflect irl STM
since Peterson and Peterson’s research has meaningless stimuli this…
decreases it’s external validity because no one tries to remember 3 numbers in their brain
how can the criticism of Peterson and Peterson’s research be counteracted?
we do try and memorise meaningless things such as postcodes, phone numbers etc
what is a strength of Bahrick’s research into LTM duration?
that it has high external validity
how does Bahrick’s research have high external validity?
didn’t control variables in investigation therefore it is true to life
how can the strength of Bahrick’s research having high external valid be counteracted?
low internal validity bcus some ppts could’ve looked at yearbook over the years and some may have not looked at it since
