memory Flashcards
What is the background for Loftus and Palmer study?
false convictions
Malcolm Alexander - sexual assault, line up
George Allen- confessed, leading questions, schizophrenia
What are the two types of information that can affect our memory?
info gained at the time of the event
info gained after the event
what can effect our memory?
leading questions
post discussions
what is the aim for LP (1)?
-test the hypothesis that language used in eyewitness testimony can alter memory
-leading questions can distort eyewitness testimony accounts and have a confabulating effect
What is the method for LP (1)?
lab experiments
independent measures
what is the sample for LP (1)?
45 students Uni of Washington
opportunity sample
5 conditional groups - 9 in each
What were the materials used in LP (1)?
7 vid clips
Evergreen Safety council of the Seattle Police Department
segments lasted 5-30 seconds
speed 20-40mph
What were the p’s asked to do after the video LP (1)?
write an account and answer a series of questions
all fillers but one
What was the critical question + the verbs LP (1)?
about how fast were the cars going when they (contacted, hit, bumped, collided, smashed) into eachother
What form of data were the results?
quantitative
What did the results show about the Ps estimated of speed?
poor
estimates of speed not affected by actual speed
What were the results for film 1 LP (1)?
actual: 20mph
estimated: 37.7mph
What was the estimated speed for the verb smashed? LP (1)
40.5
what was the estimated speed for the verb contacted? LP (1)
31.8
What were the 2 reasons for the estimation varying depending on the verb used? LP (1)
response bias (unclear what to estimate so verb gives clue)
memory distortion ( verb user actually alters Ps memory)
what was the aim for LP (2)?
-if a leading question leads to reconstructive memory
- see if p’s asked question with verb smashed more likely to remember seeing broken glass one week later than the hit verb
what was method for lp (2)?
lab experiment
independent measures
What was the sample for Lp (2)
150 students
Washington university
opportunity sampling
3 groups of 50 in each condition
What were the three conditions LP (2)
smashed
hit
control - no question about speed
what was the apparatus for Lp (2)
1 clip of multiple car crash
full duration less than 1 minute crash lasted less than 4 seconds
2 questionnaires
What did questionnaire 1 consist of? LP (2)
immediately after
describe clip in own words
answer questions - critical (estimate speed)
What did questionnaire 2 consist of? LP (2)
1 week later
10 questions
critical - did you see broken glass yes/no
How many from the smashed group thought they did/ didn’t see broken glass? lp (2)
16
34
How many Ps in hit condition did/ didn’t see broken glass? LP (2)
7
43
How many in the control group did/ didn’t see broken glass? LP (2)
6
44