G543 - Interviewing Witnesses - Loftus And Loftus Flashcards
What type of experiment was used?
Lab experiment
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
How many conditions were there?
2
What were the two conditions?
Critical slide being the gun slide or the cheque slide
How many slides were shown for each of the groups? For how long?
18 for 1.5 seconds each
What did the slides show?
People queuing in a fast food restraint
What happens in the critical slide for the control group?
Person B hands the cashier a cheque
What happens in the critical slide for the experimental group?
Person B pulls out a gun on the cashier
What were the students told it was a study in?
Practical inference
How was the dependant variable measured?
By a 20 item questionnaire
What were the participants also given after the 20 item questionnaire?
A line-up of 12 head to shoulder photos in a random sequence
What were the participants asked to do with the photo line up?
Rate how confident they were on a scale of 1 to 6
What was chance performance on the line-up?
8.5%
What percentage of the control group chose the correct person B?
38.9%
What percentage of the experimental group chose the correct person B?
11%
