theory of planned behaviour

theory of planned behaviour

1. personal attitudes

   • pros and cons of their addiction

2. subjective norms

   • how they perceive family and friends opinions
   • those who matter most to them

3. perceived behavioural control

   • how much control they perceive to have
     • internal - ability and effort
     • external- support, time
   • 'will power'
   • indirect is the intention to stop
     • needs to be strong
   • direct is the behaviour its self to stop

4. a03

   • hagger - 486 participants completed questionnaire about alcohol related behaviour, 1/3 months found the 3 key features correlated significantly and could predict behaviour
     • adds validity
     • didn't account for binge drinking so reduces validity
     • comes from questionnaires in which individuals may experience rational thoughts and not reflect behaviour ie taking drugs, stressed
       • reduces validity
       • not explained by TPB
   • short term only. intention acted on with in 5 weeks able to predict but after evidence is weaker. may not predict changes to addiction in long term