THE THEORY OF PLANNED BEHAVIOUR (TPB)
- Main Assumptions
- one of several cognitive theories that leads to a persons decision to engage in a particular behaviour.
- an individuals decision to engage in a particular behaviour can be predicted by their intention to engage in that behaviour
- Intention is a function of 3 factors:
- 1. Behavioural attitude- product of personal views
- 2. Subjective norms - a product of social influence
- 3. perceived behavioural contol is assumed to act either on intention or to behave ina particular way, or directly on the behaviour itself.
- TPB as a model for addiction prevention
- Changing behavioural attitude
- US office of national drug control policy launched a campaign in 2005 to lower teenage marijuana use.
- effectiveness of this campaign attributes its success to its influence on attitudes. 'Above the Influence' and tried to create a different attitude towards the effect of taking marijuana, it is inconsistent with being autonomous and achieving aspirations.
- Changing Subjective Norms
- anti drug campaigns seek to give adolescents actual data about the percentage of people engaging in risky behaviour
- in order to change subjective norms
- most adolescents do not smoke so exposure to accurate statistical information should correct…