T2 L2: A biopsychosocial perspective on health 2

TPB - Theory of Planned Behaviour

COM-B Model

Limitations of COM-B Model and TPB

Models are useful, but they ...

> are probabilistic - cannot explain variation in behaviour

- cannot deal well with ambivalence (e.g., de Visser & Smith, 2007)

> are individualistic - other people affect our actions (Brazeau & Lewis, 2021; de Visser & Smith, 1999)

> are best for - explaining one-off behaviours (e.g., vaccination)

- explaining initial change but not maintenance

> assume planning - do you really do all this just before you - brush your teeth?

- have another drink?

- etc.

Dual Process Model

Transtheoretical

Individual-level interventions

Motivational Interviewing (MI) is a semi-directive, client-centered counseling style involving:
- working to resolve ambivalence
- goal-setting (and monitoring)
- skills development
- enhancing motivation to initiate
and maintain change
(Miller & Rollnick, 2002)

Population- / culture-level interventions

Dry January (de Visser et al., 2016; de Visser & Nicholls, 2020; de Visser & Piper, 2020)

- provides an opportunity

- to conduct ‘behavioural experiments’

- to experience benefits of change

- to develop skills

- to enhance motivation

- to discuss drinking and the role of alcohol in society

(similar principles for “Stoptober”)