Griffiths

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Griffiths

Griffiths

Aim: To examins the thought processes and behaviours of reghular and non-regular gamblers 

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Hypotheses

Hypotheses 

1. No difference in skill level between regular and non-regular gamblers

2. Regular gamblers will produce more irrational vocalizations than non regular gamblers

3. Regular gamblers will report themselves as more skill orientated than non-regular gamblers

4. Thinking aloud participants will take longer to finish the task

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Participants

Participants 

  • 60 participants 
  • Mean age of 23 years 
  • 30 regular gamblers (29m / 1f)
  • 30 non-regular gamblers (15m / 15f)
  • Volunteer sample
  • Fully in-formed consent
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Method

Method 

  • Quasi
  • IV- regular / non-regular gamblers

Qualitative DV's:

  • Cognitive abilities (thinking aloud technique)
  • Perception of skill ( post experiemtn interview)
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Method II

Quantitative DV's

  • total number of plays
  • total minuntes of play
  • play stake
  • end stake
  • total number of wins in session 
  • win rate (time between wins)
  • win rate (plays between wins)
  • Each particpant given £3
  • Objective: stay on machine for 60 minutes 
  • Could keep wining or carry on gambling 
  • same machine
  • randoma allocation to each condition
  • recordings all transcribed within 24 hours
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Results

Results 

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Conclusions

Conclusions 

Regular gamblers:

  • more skillfull
  • believe they are more skilled
  • Know they will loose, so they play with money rather than for money 
  • More irrational vocalizations
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Evaluation

Strength

  • Standardized (same machine + same instructions) 
  • Standardized = increased replicability 
  • High ecologicla validity 

Weaknesses 

  • Low inter-rater reliability 
  • sample bias = only 1 female + only young participants 
  • ethical issues (cause stress)
  • demand characteristics (thinking aloud group) 
  • social desiribility bias with regular gamblers in thinking aloud condition 

Uses: May help in rehabilitation of pathological gamblers through cognitive behaviour modification

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