Prochaska's Model of Behaviour Change (AQA A-Level Psychology): Revision Notes
Prochaska's Model of Behaviour Change
Overview of the model
James Prochaska and Carlo DiClemente developed this behavioural change model in 1983, initially designed to explain recovery from nicotine addiction. The model has since evolved into one of the most widely used frameworks for understanding addiction-related behavioural change across various substances and behaviours.
Prochaska's six-stage model outlines the phases individuals progress through when modifying their behaviour. Also known as the Stages of Change model, it maps the journey from complete lack of awareness about needing change through to permanent behavioural modification.
Importantly, the stages do not follow a strict linear sequence - individuals can move backwards and forwards between stages multiple times. This non-linear progression is a key feature that distinguishes this model from simpler approaches to behavioural change.
The six stages of behavioural change
Pre-contemplation - "Ignorance is bliss"
Individuals at this stage show no intention of changing their addiction-related behaviour within the next six months. This lack of motivation may stem from denial, where the person genuinely believes they do not have a problem. Alternatively, it may result from demoralisation - the person has attempted to tackle their addiction multiple times without success, leading them to give up trying entirely.
Treatment Focus for Pre-contemplation Stage: Treatment interventions should focus on raising awareness and helping the person recognise the need for change rather than pushing for immediate action.
Contemplation - "Sitting on the fence"
People in this stage are considering making behavioural changes within the next six months but remain ambivalent. They increasingly recognise the need for change and can see its potential benefits, yet they also remain acutely aware of the costs and difficulties involved.
Treatment Focus for Contemplation Stage: Since individuals can remain stuck in this stage for extended periods, introducing drug treatment interventions would be counterproductive. Instead, interventions should help the person weigh up the pros and cons, ultimately tipping the balance towards seeing the benefits of overcoming their addiction.
Preparation - "OK I'm ready for this"
At this point, individuals believe the benefits outweigh the costs and intend to change their behaviour, typically within the next month. However, they have not yet determined exactly how or when to implement these changes.
The most useful interventions involve practical planning support, such as helping them explore options like consulting a drugs counsellor, calling a helpline, or arranging a GP appointment.
Action - "Let's do this"
People have taken concrete steps to modify their behaviour within the past six months. This might involve formal behavioural and cognitive treatment approaches, or less formal but meaningful actions such as destroying cigarettes or disposing of alcohol.
The key requirement is that the person must genuinely reduce their risk - simply switching to low-tar cigarettes would not qualify as meaningful action.
Effective interventions at this stage focus on developing coping skills needed to maintain behavioural change going forwards.
Maintenance - "Stay on track"
Individuals have sustained their behavioural change for more than six months. The primary focus shifts to relapse prevention - avoiding situations and cues that might trigger a return to addictive behaviours.
During this stage, people develop growing confidence that the change can be maintained long-term, and the new behaviour begins to feel like a natural part of their lifestyle. Interventions help clients apply learned coping skills and utilise available support networks.
Termination
At this final stage, new behaviours such as abstinence become automatic responses. The person no longer needs to actively resist returning to addictive behaviours when facing stress, anxiety, or loneliness - the risk of relapse essentially disappears.
Realistic Expectations for Termination: However, this stage may be unrealistic or unattainable for many individuals. Rather than viewing this as failure, the most appropriate goal for many people involves maintaining long-term abstinence while accepting that relapse remains possible, ensuring they possess the skills to progress quickly through earlier stages if needed.
Key assumptions of the model
The model rests on two major insights about behavioural change. First, people who are addicted differ in their readiness to change - some are actively contemplating change, others are already taking action, while some have decided against making any changes. Second, the effectiveness of treatment interventions depends on matching them to the person's current stage. Some approaches work well early in the recovery process but become less useful later on.
Prochaska and DiClemente recognised that overcoming addiction represents a complex process that rarely happens quickly or follows a neat linear progression. Instead, it operates as a cyclical process - while there is some orderly progression through stages, people frequently return to previous stages, and some stages may be missed entirely. The model acknowledges this dynamic nature as a realistic aspect of behavioural change rather than a weakness.
Evaluation
Strengths
Dynamic nature of behaviour change Traditional theories have often treated recovery from addiction as a single 'all-or-nothing' event. In contrast, Prochaska's model emphasises the importance of time, viewing overcoming addiction as an ongoing process. This approach recognises that behavioural change occurs through six stages of varying duration for each individual, with stages being recycled backwards and forwards to different degrees. This dynamic perspective represents a major strength of the model.
Realistic attitude to relapse According to DiClemente et al. (2004), 'relapse is the rule rather than the exception.' The six-stage model does not treat relapse as failure, but rather as an inevitable part of the complex, non-linear process of behavioural change. However, the model takes relapse seriously, recognising its potential to derail change efforts entirely.
This approach proves beneficial for people attempting recovery because they learn to accept relapse as part of the recovery process, allowing them to focus on reducing the time needed to return to the maintenance stage. The model possesses face validity with clients - they can see that it reflects realistic expectations, making it more acceptable and likely to be effective in practice.
Weaknesses
Contradictory research evidence A major review conducted by David Taylor et al. (2006) for the National Institute for Health and Care Excellence (NICE) concluded that stage-based approaches show no greater effectiveness than alternative treatments for nicotine addiction. A subsequent review by Kate Cahill et al. (2010) reached the same conclusion. The overall research picture appears negative, despite optimistic claims made by some supporters.
Critical Assessment: Addiction researcher Robert West (2005) provides a particularly harsh assessment, concluding that the model's problems are so serious it should be abandoned entirely, describing it as 'little more than a security blanket for researchers and clinicians.'
Arbitrary nature of the stages The distinctions between stages may be too arbitrary and artificial. Stephen Sutton (2001) highlights this problem by noting that someone planning to stop smoking in 30 days is classified as being in the preparation stage, while someone planning to quit in 31 days falls into the contemplation stage - despite this minimal difference.
Theoretical Criticism: Albert Bandura (1997) argues that the first two stages (pre-contemplation and contemplation) are not even qualitatively different, since they only differ in the degree to which the individual wants to change - a quantitative rather than qualitative distinction.
Pål Kraft et al. (1999) suggest the six stages could be reduced to just two meaningful categories: pre-contemplation, and all other stages grouped together.
Description versus prediction Most research applying the six-stage model to addiction describes which stages people occupy during recovery and correlates this with addiction-related and treatment-seeking behaviours. However, this research has produced mixed findings, suggesting uncertainty about whether the model effectively predicts who is likely to make changes - the primary aim of any useful model.
Psychologists expect good scientific explanations to describe, explain, and predict behaviour. Since it remains unclear whether Prochaska's model meets this third criterion, we cannot confidently say it distinguishes between people who will and will not make behavioural changes. This limitation reduces the model's validity, though future research studies could potentially address this issue, meaning the model is not entirely without merit.
Key Points to Remember:
-
Prochaska's model identifies six stages of behavioural change: pre-contemplation, contemplation, preparation, action, maintenance, and termination - though progression is cyclical rather than linear
-
Different interventions work at different stages - the model emphasises matching treatment approaches to the individual's readiness for change
-
The model views relapse as normal rather than failure, helping people maintain motivation and return to the maintenance stage more quickly after setbacks
-
Research evidence is mixed - while the model has face validity and recognises the dynamic nature of change, studies suggest it may be no more effective than alternative approaches
-
Stage boundaries may be arbitrary - critics argue the distinctions between stages are artificial, with some suggesting the six stages could be reduced to just two meaningful categories