Health Behaviour and Behaviour change 4

What is a ‘Behaviour Change Intervention’?

• Definition: A behavior change intervention is a structured action or series of activities aimed at getting individuals to modify their behavior from what it would be without such an intervention.

• Goals of Interventions:

  • Change how people behave.

  • Influence how often a behavior is performed.

  • Adjust how long the behavior is maintained.

  • Modify the time period over which the behavior occurs.

Challenges of Behaviour Change

• Why Is Behaviour Change Hard?

  • Changing behavior is not straightforward and can be more complex than it initially seems.

  • Factors influencing difficulty include ingrained habits, lack of social support, and insufficient knowledge.

Theories of Behaviour Change

• Selecting a Theory: Choosing an appropriate theory for behavior change involves evaluating its usefulness in terms of comprehensiveness, coherence, and how well it connects to an overarching model of behavior.

• Framework for Characterizing Interventions:

  • Comprehensiveness: The model should include all relevant factors for behavior change.

  • Coherence: It should be logically consistent and easy to understand.

The COM-B Model (Michie et al., 2011)

• Core Concept: The COM-B model posits that behavior is a result of the interplay between:

  • Capability: The physical and psychological ability to engage in the behavior.

    • Physical capability: Skills, strength, or stamina.

    • Psychological capability: Knowledge or mental processes.

  • Opportunity: External factors that make the behavior possible.

    • Physical opportunity: Access to resources and environments (e.g., affordability, availability).

    • Social opportunity: Social norms and cultural influences.

  • Motivation: Internal processes that energize and direct behavior.

    • Automatic motivation: Habits and impulses.

    • Reflective motivation: Conscious planning and intentions.

Application of COM-B

• Example: Taking medication as prescribed.

  • Capability:

    • Physical: Difficulty opening pill boxes.

    • Psychological: Uncertainty about the medication’s purpose or dosage.

  • Opportunity:

    • Physical: Cost of medications.

    • Social: Religious beliefs, such as taking medication during Ramadan.

  • Motivation:

    • Reflective: Feeling overwhelmed by numerous medications.

    • Automatic: Changes in routines that disrupt medication schedules.

Strengths and Criticisms of the COM-B Model

• Support:

  • Widely adopted across various disciplines.

  • Provides a broad yet simplified approach to understanding behavior change.

• Criticism:

  • May overlook variability and the need for therapeutic skills during intervention delivery.

  • Might not consider the nuances of different intervention settings.

Taxonomies and Ontologies in Behavior Change

• Purpose: Taxonomies and ontologies help in organizing and categorizing behavior change techniques (BCTs) and understanding their mechanisms of action.

• Key Points:

  • The Behavior Change Technique Taxonomy is used to represent relationships between BCTs and their mechanisms of action (Hale et al., 2020).

  • OBMS (Ontology-Based Modelling System): A tool for modeling and representing behavior change theories.

Examples of Taxonomies and Tools

• BCT Taxonomy Website: A resource for exploring different techniques.

• Research Insight: A study noted the predominance of participants from WEIRD (Western, Educated, Industrialized, Rich, Democratic) backgrounds, potentially limiting generalizability (Henrich et al., 2020).

Summary of Health Behaviour Lectures

• Why We Study Health Behaviour: To understand determinants of health and design effective behavior change interventions.

• Key Areas:

  • Determinants influencing health.

  • Theories that explain health behaviors.

  • Frameworks for designing interventions that foster lasting behavior change.