Griffiths Procedure


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  • The sample used in the Griffiths study was a total of 60 participant. 30 Regular gamblers ( 29 Males, 1 Female) 30 Non-Regular gamblers ( 15 Males, 15 Females)
  • The participants were then separated into the thinking aloud and not thinking aloud group. These were slip evenly with 30 in each group ( 15 regular gamblers, 15 non-regular gamblers)
  • Each participant was given £3 to gamble in the fruit machine. This gave them 30 free gambles.
  • As the participants were playing on the machine quantitative and qualitative data was gathered. Below are some examples of the data; Total number of plays Total minutes in play
  • Once the participants had had 60 gambles they could choose weather to carry on with their winnings or stop.
  • The participants were then asked about their perception of skill through post experiment semi structured interviews.
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