Source: Textbook Ch. 3 / Lecture Notes
Difficulty: Intermediate | Prerequisites: Parts 1 and 2 of these notes (Health Behaviour Fundamentals and Theories of Change).
Parts 1 and 2 covered the what and the why of health behaviour change. This part covers the how: the specific intervention techniques clinicians and health psychologists use to help people modify their behaviours. Cognitive-behavioural therapy (CBT) provides the largest toolkit, but the material also covers motivational interviewing, relapse prevention and the broader social and structural approaches (social engineering) that shape health behaviour at a population level. This is where theory meets practice.
Cognitive-behavioural therapy is the dominant approach to health behaviour change, using techniques like self-monitoring, cognitive restructuring and self-reinforcement to help people become their own therapists. Motivational interviewing takes a gentler approach, helping clients explore their ambivalence. Relapse prevention recognises that setbacks are normal and builds coping strategies from the outset. Beyond individual interventions, social engineering modifies the environment itself to make healthy behaviour easier.
Cognitive-behaviour therapy (CBT)
A therapeutic approach that uses complementary methods to intervene in the modification of a target problem and its context. In simple terms, CBT treats people as their own therapists by giving them tools to identify, monitor and change problematic behaviours and thought patterns.
Self-monitoring
The process of understanding the dimensions of a poor health habit before change can begin. Think of it as detective work on your own behaviour: when do you do it, what triggers it, what makes it worse?
Cognitive restructuring
Training people to recognise and modify their internal monologues to promote health behaviour change. For instance, someone who binge-eats may have a pattern of negative self-talk that precedes each episode. Restructuring targets those thoughts.
Self-reinforcement
Systematically rewarding oneself to increase or decrease the occurrence of a target behaviour. The reward is self-administered, making the person both therapist and client.
Contingency contracting
A form of behaviour modification in which a person makes a formal contract with another person, specifying consequences for meeting or failing to meet behavioural goals. Think of it as an accountability agreement with teeth.
Behavioural assignments
Home practice activities that support the goals of a therapeutic intervention. In simple terms, homework from your therapist that you do in real life to build new habits.
Motivational interviewing (MI)
A counselling approach in which the interviewer adopts a nonjudgmental, nonconfrontational, encouraging and supportive style to help clients express their own thoughts (positive and negative) about their behaviour. The goal is not to tell people what to do but to help them talk themselves into change.
Lifestyle rebalancing
A relapse-prevention strategy that promotes a healthy overall lifestyle to reduce the likelihood of returning to old habits. In simple terms, filling your life with positive routines so there is less room for the problematic behaviour.
Social engineering (health context)
Modifying the environment to affect people's ability to practise a health behaviour. Examples include mandatory vaccination requirements for school enrolment and workplace wellness programmes.
CBT treats the person as their own therapist. The core principle: if you can identify and understand the patterns behind a problematic behaviour, you can change them.
Self-monitoring is the first step. Before change can begin, you need to understand the dimensions of the habit:
When does the behaviour occur? After stressful days? In social settings?
How frequently?
What are the consequences?
Monitoring involves learning to discriminate the target behaviour (smoking versus the desire to smoke) and charting it to identify the discriminative stimulus, the specific trigger.
Self-control of behaviour is where the active work happens:
Control the antecedents (things that lead to the behaviour) and the consequences (what follows it).
Cognitive restructuring: Recognise and modify internal monologues. Emotional eating, for example, is often preceded by negative self-talk. Changing the thought pattern can interrupt the behaviour chain.
Self-reinforcement: Reward yourself systematically when you hit behavioural targets. This makes the new behaviour self-sustaining.
Contingency contracting adds an external layer: a formal agreement with another person that specifies consequences for success or failure.
Behavioural assignments are take-home practice activities. Their advantages are significant:
The client becomes involved in and committed to the treatment process.
The client generates useful data for planning further interventions.
Responsibility for change shifts gradually from the therapist to the client.
Successful completion builds the client's sense of self-control, creating a positive feedback loop.
Advantages of CBT overall:
A carefully selected set of techniques can address all aspects of a problem.
Therapeutic plans can be tailored to each individual.
Multimodal interventions allow people to modify several health habits at once.
Social skills and assertiveness training teaches people methods for dealing with social anxiety effectively. This is relevant because social pressure is a common trigger for unhealthy behaviours (drinking, smoking).
Relaxation training uses techniques such as deep breathing and progressive muscle relaxation to manage the physiological stress response, which is itself a barrier to behaviour change.
Motivational interviewing (p. 158) is a distinct counselling style:
The interviewer is nonjudgmental, nonconfrontational, encouraging and supportive.
The goal is to help clients express their own positive and negative thoughts about their behaviour.
It does not prescribe change. Instead, it creates the conditions for the client to articulate their own reasons for changing.
Particularly effective for people who are ambivalent about change (contemplation stage in TTM terms).
Relapse is common enough that prevention strategies should be integrated into treatment programmes from the very beginning, not added as an afterthought.
The abstinence violation effect is central to understanding relapse. When a person violates their own self-imposed rules (e.g., a smoker who quit lights up one cigarette), they experience a feeling of loss of control. This feeling, rather than the single slip itself, can spiral into a full relapse.
Why people relapse:
Vigilance fades over time. The effort of maintaining a new behaviour is exhausting, and people let their guard down.
Negative affect (bad moods, stress, emotional distress) is a powerful relapse trigger.
The cognitive-behavioural model of relapse describes two pathways from a high-risk situation:
Effective coping response leads to increased self-efficacy leads to decreased probability of relapse.
Ineffective coping response leads to decreased self-efficacy, positive outcome expectancies for the old behaviour, an initial lapse, the abstinence violation effect and increased probability of relapse.
Relapse prevention techniques:
Identify the specific situations most likely to trigger a relapse.
Engage in constructive self-talk to counter the abstinence violation effect.
Lifestyle rebalancing: Build a healthy, balanced lifestyle that fills the gap left by the old behaviour. A life structured around positive routines leaves less space and less temptation for the problematic one.
Social engineering takes a population-level approach: rather than changing individuals one at a time, modify the environment so that healthy behaviour becomes easier or mandatory.
Example: Schools requiring vaccinations shifted vaccine uptake at scale.
Venues for health habit modification vary widely:
Private therapist's office
Health practitioner's office
Family settings
Self-help groups
Schools
Workplaces (workplace interventions, gym memberships, smoking cessation programmes)
Community-based interventions
Mass media campaigns
Telephone and internet interventions
Large firms tend to offer more workplace health interventions than small firms, including gym membership discounts, smoking cessation programmes, web-based resources, wellness newsletters, personal health coaching, weight loss programmes and nutrition classes.
The lecture closes with practical principles for designing effective interventions:
Targeting: Know exactly who the intervention is for.
Duration and intensity: Match the dose to the problem.
Level of intervention: Intervene at the right level (individual, community, policy).
Design for the target population: Cultural sensitivity, language, norms.
Watch out for unintended consequences.
Pay attention to attrition (people dropping out).
Think about ethics throughout:
Cultural sensitivity in design and delivery.
Build in ongoing support and relapse prevention from the start.
Students often think relapse means failure. In the CBT and TTM frameworks, relapse is a normal part of the change process and should be planned for from the outset.
It is common to confuse self-monitoring with self-control. Self-monitoring is the observation and tracking phase; self-control is the active modification phase. Monitoring comes first.
Students sometimes assume motivational interviewing involves giving advice or directing the client. It does the opposite: the interviewer helps the client articulate their own reasons for change.
Contingency contracting is sometimes confused with self-reinforcement. Contingency contracting involves a formal agreement with another person; self-reinforcement is self-administered.
⚠️ Know the sequence of CBT techniques: self-monitoring first, then self-control strategies (cognitive restructuring, self-reinforcement), then behavioural assignments.
⚠️ Be able to explain the abstinence violation effect and its role in the relapse process.
⚠️ Understand the two pathways in the cognitive-behavioural model of relapse (effective coping vs. ineffective coping).
⚠️ Motivational interviewing's nonjudgmental style is a frequent exam distinction. Know how it differs from directive approaches.
⚠️ Social engineering is a population-level concept. Be able to give examples and distinguish it from individual-level interventions.
⚠️ The advantages of behavioural assignments (client involvement, self-control, gradual responsibility shift) are commonly tested.
True or False: Self-monitoring involves rewarding yourself for healthy behaviour. (False, that is self-reinforcement. Self-monitoring is observing and tracking the behaviour.)
Fill in the blank: The feeling of loss of control after violating a self-imposed rule is called the ______ ______ effect. (Abstinence violation)
True or False: Motivational interviewing uses a confrontational style to push clients toward change. (False, it is nonjudgmental, nonconfrontational and supportive.)
Fill in the blank: ______ ______ modifies the environment to affect people's ability to practise a health behaviour. (Social engineering)
True or False: Relapse prevention should be added to treatment only after the client has shown signs of struggling. (False, it should be integrated from the outset.)
Q: What is the first step in CBT-based health behaviour change?
A: Self-monitoring. Before you can change a behaviour, you need to understand its patterns, including when it occurs, how often, and what triggers it.
Q: Explain the cognitive-behavioural model of relapse using the two pathways.
A: When a person encounters a high-risk situation, two things can happen. (1) An effective coping response increases self-efficacy, which decreases the probability of relapse. (2) An ineffective coping response decreases self-efficacy, creates positive outcome expectancies for the old behaviour, leads to an initial lapse, triggers the abstinence violation effect, and increases the probability of full relapse.
Q: What distinguishes motivational interviewing from traditional directive counselling?
A: Motivational interviewing is nonjudgmental, nonconfrontational and supportive. Instead of telling clients what to do, the interviewer helps clients express their own positive and negative thoughts about their behaviour. The client, rather than the therapist, articulates the reasons for change.
Q: Name three advantages of behavioural assignments in CBT.
A: (1) The client becomes actively involved in and committed to the treatment process. (2) The client produces useful information for planning further interventions. (3) Responsibility for behaviour change gradually shifts from the therapist to the client, building self-control.
Q: What is social engineering in the context of health behaviour, and give one example.
A: Social engineering modifies the environment to make healthy behaviour easier or mandatory, rather than targeting individuals one at a time. Example: schools requiring vaccinations for enrolment.
CBT techniques connect to the broader discussion of cognitive psychology and learning theory. Motivational interviewing draws on principles from counselling psychology and the person-centred tradition (Rogers). The relapse prevention model ties directly to the Transtheoretical Model's maintenance stage and the concept of the abstinence violation effect. Social engineering links to public health policy and health economics, where population-level interventions are often more cost-effective than individual-level treatment.
cognitive-behaviour therapy, CBT, self-monitoring, cognitive restructuring, self-reinforcement, contingency contracting, behavioural assignments, motivational interviewing, MI, relapse prevention, abstinence violation effect, lifestyle rebalancing, social engineering, social skills training, assertiveness training, relaxation training, progressive muscle relaxation, deep breathing, discriminative stimulus, target behaviour, antecedents, consequences, internal monologue, negative self-talk, workplace interventions, community health interventions, building better interventions, PSY 320, health psychology