Revise Individual factors in changing health beliefs for Cambridge 9990 (3.5.3)

Developed by Rotter (1966), locus of control (LoC) is a personality construct referring to an individual's belief about the extent to which they control events in their lives. It exists on a continuum from internal to external. Individuals with a high internal LoC believe they are primarily responsible for their own health outcomes, attributing them to their personal choices and behaviours. Consequently, they are more likely to engage in positive health behaviours like regular exercise, balanced diets, and attending health screenings. Conversely, those with a high external LoC believe their health is determined by outside forces such as luck, fate, or powerful others (e.g., doctors). They may feel their actions have little impact, leading to a more passive or fatalistic approach to their health.

Self-efficacy, a concept from Bandura's Social Cognitive Theory, is the belief in one's own capability to successfully perform a specific task or behaviour to achieve a desired outcome. It is distinct from self-esteem, which is a general sense of self-worth. In health psychology, high self-efficacy is a strong predictor of health behaviour change. For example, a smoker's belief in their ability to resist cravings and manage withdrawal symptoms (high self-efficacy) is crucial for a successful quit attempt. Bandura proposed four sources of self-efficacy: mastery experiences (past successes), vicarious experiences (observing others succeed), verbal persuasion (encouragement from others), and interpretation of physiological/emotional states (e.g., viewing anxiety as excitement rather than fear).

The Transtheoretical Model (TTM), developed by Prochaska and DiClemente, proposes that individuals move through a series of distinct stages when modifying a health behaviour. It provides a framework for understanding the process of change. The stages are: 1) Precontemplation (no intention to change), 2) Contemplation (aware a problem exists, thinking about change), 3) Preparation (intending to take action soon, making small changes), 4) Action (actively modifying behaviour, e.g., starting to exercise), and 5) Maintenance (sustaining the new behaviour and working to prevent relapse). A final stage, Termination, is sometimes included where the individual has zero temptation to return to the old behaviour. This model highlights that change is a gradual process, not a single event.

A key strength of the TTM is its practical application in health promotion. Interventions can be matched to a person's stage to maximise effectiveness. For someone in precontemplation, an intervention might focus on providing information to raise awareness. For someone in the action stage, it would focus on developing coping strategies to prevent relapse. However, the model is not without criticism. A major issue is its assumption that the stages are discrete and distinct; the lines between them can be blurry. Furthermore, the model is often criticised for being descriptive rather than explanatory—it outlines the stages people go through but doesn't fully explain the psychological mechanisms that cause movement between them. Crucially, progression is not always linear; relapse is common, and individuals often cycle through the stages multiple times.