Theory of Planned behaviour

A person decision to engage in addictive behaviour or attempt to quit is all down to their intentions around the behaviour. Intention will be influenced by….

Attitude to the behaviour:

Consideration of whether the consequences of the behaviour are positive or negative, also do they really want to change

Social Norms:

What significant others and society think about the behaviour, also how much the individual cares about the opinion

Perceived behavioural control:

Does the person believe they can do it

Evaluation:

• Meta analyses have shown that TPB id good at understanding people’s behaviour.

• Model can predict behaviour intention than actually change

• Model is too rational, it doesn’t take into account emotions and compulsive behaviour

• When the people fill out the questionnaire, they may of not anticipated the emotional changes that could of influenced there behaviour.

Godin Et Al (1992) collected data about smoking behaviour using interviews and self-report questionnaires

• They followed up participants 6 months later

• The most important predictor for whether people continued smoking was a lowperceived control over smoking