To provide support for the 'weapon focus' effect when witnessing a crime
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What methodology did Loftus use?
A laboratory experiment
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Describe the sample used for Loftus's study?
36 students from Washington uni, aged 18-31. half recruited through advertisement and paid $3.50, the others participated for exchange for extra credit in their psychology course
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What were the size of the slides used? and how many were there?
35mm and 18 slides
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How long were the slides shown for?
1.5 seconds
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What type of restraunt did the slide show people queing in?
Taco time
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What does person B in the ques do in the control and experimental conditions?
control = hands cashier a cheque, eperimental= pulls a gun
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What were the participants told the study was about?
proactive interference (when something you learned earlier interfers with you memory in the present)
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How was the DV measured?
by a 20 item multiple choice questionaire. Also given a lune up of 12 head-torso photos and asked to rate their confidence from 1-6
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Answers to the questionaire about the slideshow .....
showed no significant difference between conditions
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What was chance performance level on the photo lineup calculated as?
8.5%
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Which condition correctly identified person B more often? was this result significant?
contol condition and yes result is significant (39% vs 11%)
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Was there a significant difference in the confidence level of either group?
No significant difference
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Was a significant result found with regards to eye fixation data?
results significant (3.72 for gun vs 2.44 for control)
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What conclusion can be made from the results of experiment 1 of Loftus's study?
The participants spent more time looking at the weapon and therefore had more difficulty in picking the suspect from a lineup
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What was the sample in Loftus's experiment?
80 psychology students
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Did the results of the 2nd experiment support those of the 1st?
yes
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The findings of the 2 experiments may be futher enhanced in a real-world situation when a witness will be made more aroused and less likely to have increased.....
increased attentional narrowing
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Other cards in this set
Card 2
Front
What methodology did Loftus use?
Back
A laboratory experiment
Card 3
Front
Describe the sample used for Loftus's study?
Back
Card 4
Front
What were the size of the slides used? and how many were there?
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