Flashcards in G543 - Interviewing Witnesses - Loftus And Loftus Deck (18)
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1
What type of experiment was used?
Lab experiment
2
How many participants were there? What was their occupation? How were half of them recruited? How were the other half recruited?
36 students from Washington university aged 18-31.
Half recruited through advertisement and paid $3.50
Half participated for extra credit in their psychology class
3
How many conditions were there?
2
4
What were the two conditions?
Critical slide being the gun slide or the cheque slide
5
How many slides were shown for each of the groups? For how long?
18 for 1.5 seconds each
6
What did the slides show?
People queuing in a fast food restraint
7
What happens in the critical slide for the control group?
Person B hands the cashier a cheque
8
What happens in the critical slide for the experimental group?
Person B pulls out a gun on the cashier
9
What were the students told it was a study in?
Practical inference
10
How was the dependant variable measured?
By a 20 item questionnaire
11
What were the participants also given after the 20 item questionnaire?
A line-up of 12 head to shoulder photos in a random sequence
12
What were the participants asked to do with the photo line up?
Rate how confident they were on a scale of 1 to 6
13
What was chance performance on the line-up?
8.5%
14
What percentage of the control group chose the correct person B?
38.9%
15
What percentage of the experimental group chose the correct person B?
11%
16
What was the eye fixation data?
Average fixations on the gun - 3.72
Average fixations on the cheque - 2.44
17
What reason did Loftus and Loftus give for the experimental group having more difficulty picking the suspect from the line-up?
They spent too long looking at the weapon
18
