Affects of Anxiety on Accuracy of EWT Flashcards
1
Q
Who studied the NEGATIVE effects of anxiety on accuracy of EWT?
A
Johnson and Scott
2
Q
What was Johnson and Scott’s procedure?
A
- Pps were told that they were taking part in a lab experiment and sat in a waiting room
- In the ‘low anxiety’ condition a man walked through with greasy hands holding a pen
- In the ‘high anxiety’ condition, the pps overheard an argument and a man walked out with a bloody knife
- The pps were asked to pick out the man from 50 different photos
3
Q
What were Johnson and Scott’s findings?
A
- In the ‘low anxiety’ condition 49% of participants could correctly identify the man
- In the ‘high anxiety’ condition only 33% could correctly identify the man
4
Q
What was Johnson and Scott’s conclusion?
A
Anxiety decreases accuracy of EWT
5
Q
What did Pickel say?
A
- Actually measuring effect of surprising weapon
- Chicken in barbershop experiment
6
Q
Who studied the POSITIVE effects of anxiety on accuracy of EWT?
A
Christian and Hubinette
7
Q
What was Christian and Hubinette’s procedure?
A
- Questioned 110 witnesses to 22 real bank robberies
- Some were threatened and some were not
8
Q
What were Christian and Hubinette’s findings?
A
- Pps who were threatened gave a more accurate testimony than those who were not
9
Q
What was Christian and Hubinette’s conclusion?
A
- Anxiety can increase accuracy of EWT
- However individual differences (Deffenbacher)
