Job Control and Heart Disease Risk (British Civil Servant Study)

Two individuals, Sam and Chris, are both diagnosed with a similar manageable health condition. Sam actively researches the condition, adheres strictly to a new diet and exercise plan, and regularly monitors his symptoms, believing his actions can significantly impact the course of his illness. Chris, however, feels that his health is largely a matter of fate and genetics, and he is less consistent with his treatment plan. After six months, Sam shows significantly better health outcomes than Chris. Which psychological principle best explains the difference in their outcomes?

Perceived Control and Physical Functioning Decline (Infurna et al. Study)

Perceived Control and Heart Attack Risk (Rosengren et al. Study)

Perceived Control and Cardiovascular Disease Risk (Stürmer et al. Study)

Perceived Control and Cardiac Disease Mortality (Surtees et al. Study)

Perceived Control and Health Behaviors (Bandura, 2004 Study)