2375137
Description
Mind Map by megan langdon, updated more than 1 year ago
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Created by megan langdon
about 9 years ago
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|
Cognitive
Psychology -
Memory
- Duration
- STM
- Peterson
&
Peterson
- Method
- Ppts shown
nonsense
trigram
- 3 random
consonants
- Asked to
recall after
3, 6, 9, 12, 15
or 18 secs.
- During pause -
asked to count
backwards in 3s
from given no
- Interference
task
- Interference
task
- During pause -
asked to count
backwards in 3s
from given no
- 3 random
consonants
- Ppts shown
nonsense
trigram
- Results
- After 3 secs -
about 80%
trigrams recalled
correctly
- After 18
secs recall
= 10%
- After 3 secs -
about 80%
trigrams recalled
correctly
- Conc
- When rehearsal
prevented - very
little can stay in STM
for longer than
about 18 secs
- When rehearsal
prevented - very
little can stay in STM
for longer than
about 18 secs
- Evaluation
- Lab
experiment
- Variables
tightly
controlled
- Results
likely to be
reliable
- Results
likely to be
reliable
- Variables
tightly
controlled
- Nonsense
trigrams
- Artificial
- Lacks eco
validity
- Meaningful /
'real-life' memories
may last longer in
STM
- Lacks eco
validity
- Artificial
- Only 1 type
of stimulus
used
- STM may
depend upon
stimulus
- STM may
depend upon
stimulus
- Each ppt saw
multiple
trigrams
- Could've
led to
confusion
- Meaning 1st
trigram was
only realistic
task
- Meaning 1st
trigram was
only realistic
task
- Could've
led to
confusion
- Lab
experiment
- Method
- Peterson
&
Peterson
- VLTMs
- Bahrick
et al
- Method
- Field
experiment
- 392 people
asked to list
names of
ex-classmates
- 'Free-recall
test'
- Shown
photos
- Asked - recall
names of
people shown
- Photo -
recog test
- Photo -
recog test
- Or given
names
- Asked to
match to
photo of
classmate
- Name -
recog test
- Name -
recog test
- Asked to
match to
photo of
classmate
- Asked - recall
names of
people shown
- 'Free-recall
test'
- Field
experiment
- Results
- W/in 15 yrs
of leaving
school
- Ppts recall
about 90%
names &
faces
- Ppts recall
about 90%
names &
faces
- About 60%
accurate on
free - recall
- W/in 30 yrs -
free recall =
30% accurate
- After 48 yrs -
name recog about
80% & photo recog
about 40%
- W/in 15 yrs
of leaving
school
- Conc
- Shows evidence
of VLTMs in 'real
life setting'
- Recog =
better than
recall
- May be
huge store
of info
- But not
always easy
to access all
of it
- Need
help to
get it
- Need
help to
get it
- But not
always easy
to access all
of it
- May be
huge store
of info
- Shows evidence
of VLTMs in 'real
life setting'
- Evaluation
- Field
experiment
- High eco
validity
- Hard to
control all
variables
- Less
reliable
- Less
reliable
- Hard to
control all
variables
- High eco
validity
- No way of
knowing why
info recalled
so well
- Showed
better recall
than other
studies in LTM
- May be
because info
was meaningful
- May be
because info
was meaningful
- Type of info
could be
rehearsed
- If still in touch w/
ex classmates / if
talk to friends
about memories of
classmates
- Results can't
be gen to other
types of info
held in LTM
- Increasing
rates of recall
- Results can't
be gen to other
types of info
held in LTM
- If still in touch w/
ex classmates / if
talk to friends
about memories of
classmates
- Field
experiment
- Method
- Bahrick
et al
- STM
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