Theory of planned behaviour

Assumptions ­ Ajzen, 1989: theory of planned behaviour is a cognitive theory about factors that lead a person to
decide to engage in a particular behaviour. It is based on the idea that a person's intention of performing a given
behaviour is the best predictor of…

positive outcome. Therefore, they concluded that the higher an individual's self-efficacy, the more likely they
are to give up an addiction.
Internet ­ increasingly used to promote health behaviour change
Webb et al, 2010: meta-analysis of 85 studies on internet intervention and found that those based on a
theoretical theory…