Addiction - Reducing Addictive Behaviour

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  • Reducing Addictive Behaviour - Theory of Planned Behaviour
    • Evaluation
      • Fails to take into account irrational determinants of behaviour
      • Ignores  other factors eg. identification with peers. Klag suggests self-determination theory preferable
      • Distinction between behavioural intention and behavioural expectation
      • TPB explains intention formation rather than processes involved in translating intention into action
      • Distinction made between motivational phase and post-decisional phase
      • Alcohol or drugs can produce discrepancy between intention and actual behaviour
      • Perceived behaviour control more important when associated with performance of a task
      • Self-report techniques subject to self-representational biases. Questionnaires are poor
      • TPB research mostly correlational - not clear that behavioural attitudes have caused change
    • AO1
      • Behaviour directly predicted by intention to engage
      • Behavioural attitude - formed on basis of beliefs about consequences of performing behaviour
      • Subjective norms = injunctive norm + descriptive norm
      • Perceived behavioural control acts either on intention to behave, or directly on behaviour
      • ONDCP - effectiveness of campaign attribute to its influence on attitudes
      • Exposure to accurate statistical information corrects subjective norms
      • Perceived behavioural control most important predictor for giving up smoking
      • Self-efficacy - important in relapse prevention programmes
      • Webb et al - Internet interventions based on TPB had greater success
      • White et al - TPB predictors significant in sun protection intentions and behaviour


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