Griffiths Study

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Define 'addiction'
A persistent, compulsive dependence on a behaviour or substance
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What was the aim of the study?
Whether the skills involved in fruit machine gambling are 'actual' or 'perceived'
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What was Hypothesis One?
There would be no difference between regular and non-regular fruit machine gambling on objective measures of skill
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What was Hypothesis Two?
Regular gamblers would produce more irrational verbalisations than non-regular gamblers
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What was Hypothesis Three?
Regular gamblers would be more skill orientated than non-regular gamblers on subjective measures of self report
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What sort of method was used?
Field experiment using observation and interviews to gather data
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How many participants were tested?
60 (44 were male, 16 were female)
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How many of the participants were male and female?
44 were male, 16 were female
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What was the mean age of all the participants?
23.4
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What sort of sampling technique was used?
Self-selected, using a poster on the college campuses in Plymouth
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Where did the procedure take place?
In a real amusement arcade
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What was the independent variable? (Manipulated)
Whether the participants were in the 'thinking aloud' or 'non-thinking aloud' group
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What was the independent variable? (Not manipulated)
Whether the participant was a non-regular gambler or a regular gambler
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How much money was each participant given to gamble with?
£3 (30 'free' gambles)
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If participants still had money left when the reached __ gambles, they were asked if they wanted to stop or continue
60
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All of the regular gamblers changed machines at least __ times
3
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What 4 things was Griffiths observing?
1) Time (minutes) on machine 2) Number of gambles 3) Amount of winnings 4) Result of every gamble
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What were the 7 objective behaviours observed?
1) Tot. plays 2) Tot. time 3) Winnings 4) Number of wins 5) Plays between wins 6) Time between wins 7) Play rate per min.
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State two results from Hypothesis One:
1) RG lost same amount of money as NRG 2) RG play faster and more frequently
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State irrational comments result (Hypothesis Two)
RG gave 14% irrational comments, NRG gave 2.5% irrational comments
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State two examples of verbalisations (Hypothesis Two)
"This fruity is in a good mood!" "This machine doesn't like me"
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What was the response from the NRG to "is there any skill involved?"
They said it was just down to chance
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What was the response from the RG to "is there any skill involved?"
They said it was down to skill and chance
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Of the 60 participants, how many managed to break even?
21 (14 RG, 7 NRG)
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How many NRG and RG stayed on until they had lost everything?
10 RG, 2 NRG
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What was the conclusion?
RG think there is more skill involved
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Other cards in this set

Card 2

Front

What was the aim of the study?

Back

Whether the skills involved in fruit machine gambling are 'actual' or 'perceived'

Card 3

Front

What was Hypothesis One?

Back

Preview of the front of card 3

Card 4

Front

What was Hypothesis Two?

Back

Preview of the front of card 4

Card 5

Front

What was Hypothesis Three?

Back

Preview of the front of card 5
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