The Theory of Planned Behaviour

A model which helps understand how to intervene and prevent addictive behaviour

Azjen (1989)

A person's decision to engage in addictive behaviour is predicted by their intention to engage in the behaviour

Intention is influenced by the interaction between:

1. Attitude to the behaviour
2. Social norms
3. Perceived behavioural control

Attitude to the behaviour:

• Consideration of whether the consequences of the behaviour are positive or negative

Social Norms:

• What significant others think about the behaviour and are actually doing
• Legal

Perceived behavioural control:

• Whether a person believes they can carry out a behaviour
• Influences: intent, behaviour

Application:

Change:

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