Classic Study Loftus And Palmer Flashcards
(23 cards)
Aim of Experiment 1
To investigate whether leading questions would influence the estimates of the speed of a vehicle among eyewitness
What was the sample for experiment 1
45 American students from the University of Washington
What was the sampling technique of experiment 1 in the Classic study of criminal
Opportunity sampling
What type of experiment was Loftus and Palmer’s experiment 1
Laboratory
What experiment design did Loftus and Palmer use in their experiment 1
Independent Measures
How many and what type of films were shown to the PPs in Loftus and Palmer Experiment 1
7 films of traffic accidents
How long were the films shown to the PPs in Loftus and Palmer experiment 1 and how were they shown
5-30s in random order
What were the Participants told to do after watching the films
They were asked to describe what had happened as if they were eye witnesses
What specific question were PPs asked after watching the films I’m experiment 1
“About how fast were the cars going when they smashed/collided/bumped/hit/contacted each other”
What were the 5 different words that participants may of had in experiment 1
Smashed
Collided
Bumped
Hit
Contacted
What was the IV of Loftus and Palmer experiment 1
The wording of the question
What was the DV of Loftus and Palmer experiment 1
The speed reported by the participants
Which condition reported the highest speed estimate
Smashed with a speed of 40.8mph
Which condition reported the lowest speed estimate
Contacted 31.8Mph
What did Loftus and Palmer conclude from experiment 1
EWT might be biased by the way questions are asked after a crime is committed
What was the aim of experiment 2 of the criminal classic study
Investigating whether leading questions create a response bias or if alter a person’s memory representation
What was the sample of Loftus and Palmer experiment 2
150 students
What were participants shown in experiment 2 of Loftus and Palmer
A one minute film which showed a car driving through the countryside followed by 4s of traffic accidents
What were each of the three groups asked after watching the video
How fast were the cars going when they hit
How fast were the cars going when they smashed
Control group wasn’t asked anything
When was the DV measured in experiment 2
One week after
What was the dependant variable in experiment 2
Answering yes or no to the question “Did you see any broken glass”
What were the 2 results in experiment 2
16 PPs in the Smashed group saw broken glass
7 PPs in the Hit group saw broken glass
What did Loftus and Palmer conclude in experiment 2
That memory can easily be distorted by questioning techniques and information acquired after the event
