Table 1

BCW components and definitions36

COM-B components (for any Behaviour to occur there must be Capability, Opportunity and Motivation to do it)		TDF domains (integrative framework synthesising key theoretical constructs)	BCW intervention functions (broad categories of means by which an intervention can change behaviour)	BCW policy options (types of decisions made by authorities that help to support and enact the interventions)	BCT Taxonomy Groups (16 groups containing 93 BCTs) (active component of an intervention designed to change behaviour)
Capability	Psychological	Knowledge Skills Memory, attention and decision processes Behavioural regulation	Education Persuasion Incentivisation Coercion Training Enablement Modelling Environmental Restructuring Restrictions	Guidelines Environmental/social planning Communication/marketing Legislation Service provision Regulation Fiscal measures	Goals and planning Feedback and monitoring Social support Shaping knowledge Natural consequences Comparison of behaviour Associations Repetition and substitution Comparison of outcomes Reward and threat Regulation Antecedents Identity Scheduled consequences Self-belief Covert learning
Capability	Physical	Skills
Opportunity	Social	Social influences
Opportunity	Physical	Environmental context and resources
Motivation	Reflective	Social/professional role and identity Beliefs about capabilities Optimism Beliefs about consequences Intentions Goals
Motivation	Automatic	Social/professional role and identity Optimism Reinforcement Emotion

BCT, Behaviour Change Technique; BCW, Behaviour Change Wheel; TDF, Theoretical Domains Framework.