Intention is the central concept. A specific health behaviour can be predicted from our intention to behave in that way. Intentions are formed from three key sources: Personal Attitudes, Subjective Norms, Perceived Behavioural Control
Self-efficacy is the belief we have in our ability to successfully perform an action or task. Awareness of our self-efficacy comes from four sources: Mastery Experiences, Vicarious Reinforcement, Social Persuasion, Emotional States
Key Assumptions: People change their behaviour through five stages - Precontemplation,Contemplation, Preparation, Action, Maintenance. Change is not a single event but a cyclical process. People differ in their readiness to change. Choice of intervention depends on the stage they are in.