Coding, capacity and duration Flashcards
Study for coding of STM and LTM
PFC
Baddeley
Tested recall of acoustically similar/dissimilar words
Recall of semantically similar and dissimilar words
Found immediate recall was worse for acoustically similar words - STM acoustically
20 mins recall worse for semantically dissimilar - LTM semantically
AO3 Baddeley
Artificial tasks
Brandimote
Baddeley - Artificial tasks
no significant meaning
limited application
cannot generalise
Baddeley - Brandimote
Suggested either could be encoded visually
Didnt check visual encoding
limited
Study for capacity of STM
PFC
Miller
tested how many digits pp could remember
7 +/- 2
AO3 Miller
Cowan
High control
Miller - Cowan
Meta -analysis
closer to 5+/- 2
Miller outlier in comparison
Miller - high control
lab
replicable
Study for duration of STM
PFC
Peterson and Peterson Consonant trigrams to remember distractor task 3 second interval = 80% recall 18 sec interval = 3% recall STM = 18-30 seconds long
P and P AO3
Artificial tasks
Nairne et al
P and P artificial tasks
no significance
Limited application
cannot generalise
P and P Nairne et al
Instead of decay
It was displacement from distractor task
Nairne found items could be recalled 96 secs later
Study into duration of LTM
PFC
Bahrick et al pp tested on recognition test of high school classes - from photos and free recall of names 48 yrs later - 70% accuracy free recall worse
AO3 Bahrick
High external validity
Confounding variables
Bahrick - high external validity
real life memory
research CAN be generalised
