Please enable JavaScript.
Coggle requires JavaScript to display documents.
Baddeley LTM study (1966b) - Coggle Diagram
Baddeley LTM study (1966b)
GRAVE
Application
can be applied to education, finding how LTM encodes helps teachers promote the best ways of learning and memory improvement strategies like mind maps
Internal validity
standardised procedures in a controlled lab experiment means high internal validity as extraneous variables controlled
Reliability
controlled lab experiment with maintained standardised procedures so results highly replicable
Ecological validity
artificial environment and tasks like word lists lack mundane realism so low ecological validity
Generalisability
small sample made up of volunteers, less than 20 in the similar groups, low generalisability
Ethics
no serious ethical issues, surprise test may question informed consent and potential stress, but it was necessary to increase internal validity
sample
in 4 groups based on which list, acoustically similar/dissimilar and semantically similar/dissimilar
72 mixed men and women from APRU subject panel, about 20 per group
experiment
procedure
4 trials of same list, presented in slides 1 word every 3 seconds
each trial presentation/distraction/test
words were presented together on the board, given 40 seconds to write down the 10 words in order after each trial
repeat steps above 4 times
15 minutes of self paced digit copying
surprise test, asked to wrote 10 word list in order
aim:
to find out if the LTM encodes acoustically or semantically
distraction test
6 lots of an 8 digit sequence
1 digit per second
8 seconds to write down
findings
results
no significant difference in the acoustic lists, semantically dissimilar significantly better recall
conclusion
learning of words impaired by the semantic similarity
shows that LTM encodes semantically similar words together
recall gets mixed up
transferral to LTM involves a stage when material is in the STM
(previous studies suggest STM encodes acoustically)