Prochaska's Model of Behaviour Change
Decisional Balance: This concept involves the 'pros' and 'cons' of changing. In Pre-contemplation, the cons of changing outweigh the pros; in Contemplation, they are roughly equal; and by the Action stage, the pros must outweigh the cons to sustain effort.
Self-Efficacy: Derived from Bandura's theory, this refers to the situation-specific confidence people have that they can cope with high-risk situations without relapsing to their unhealthy habit. Confidence typically rises as one moves through the stages.
Processes of Change: These are the covert and overt activities people use to progress through the stages. They include cognitive processes (like consciousness raising) for early stages and behavioral processes (like stimulus control) for later stages.
| Feature | Pre-contemplation | Contemplation | Preparation |
|---|---|---|---|
| Intent | No intent to change | Intent within 6 months | Intent within 1 month |
| Awareness | Denies the problem | Acknowledges problem | Planning for change |
| Primary Task | Increase awareness | Resolve ambivalence | Develop a plan |
Action vs. Maintenance: The distinction is primarily temporal and strategic. Action is about the initial 6 months of active modification, while Maintenance is about long-term sustainability and habituation after the 6-month mark.
Cognitive vs. Behavioral Processes: Early stages (Pre-contemplation to Contemplation) rely on thinking and feeling (cognitive), while later stages (Preparation to Maintenance) rely on doing and environmental cues (behavioral).
Identify the Timeframe: Exams often use specific time markers to test your knowledge of the stages. Look for 'next 30 days' (Preparation), 'next 6 months' (Contemplation), or 'has been doing for 3 months' (Action).
Look for Ambivalence: If a scenario describes a person who knows their habit is bad but lists many reasons why they can't stop yet, they are almost certainly in the Contemplation stage.
Differentiate Preparation from Action: Preparation involves 'getting ready' (e.g., buying running shoes), whereas Action involves 'doing the target behaviour' (e.g., actually running).
Intervention Matching: Remember that providing 'how-to' advice to someone in Pre-contemplation is a common mistake; they first need 'why-to' information to increase their awareness.
Linear Progression Myth: Students often assume people move smoothly from stage 1 to stage 5. In reality, most people 'recycle' through the stages several times before achieving permanent change.
Relapse as Failure: A common misconception is that relapse means the model has failed. The TTM views relapse as a learning opportunity that provides data on what triggers the old behaviour, allowing for a more robust plan in the next cycle.
Overestimating Action: Many practitioners focus only on the Action stage, ignoring the fact that the majority of at-risk populations are not in the Action stage and require different motivational support.