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Griffiths (1994)
The role of cognitive bias and skill in fruit machine gambling



Aim

To compare the behaviour of regular and non-regular fruit machine
gamblers
4 HYPOTHESES
1. Regular gamblers would produce more irrational verbalisations
2. No difference between PPTS objective measures of skill
3. Regular gamblers will be more…

Page 2

Preview of page 2
Griffiths (1994)
The role of cognitive bias and skill in fruit machine gambling



Playing rate
o Regular gamblers (8mins)
o Non-regular gamblers (6 mins)
No difference in objective measures
Thinking aloud condition
o Regular gamblers had lower win rate
o Regular gamblers = 14% irrational verbalisation
o Non-regular gamblers =…

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