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Conventional theory holds that health insurance is purchased because consumers are adverse to risk, and that all of moral hazard is inefficient. Nyman's model holds that insurance is purchased in order to obtain an income transfer in the ill state.
The RAND Health Insurance Experiment (RAND HIE) was an experimental study from 1974 to 1982 of health care costs, utilization and outcomes in the United States, which assigned people randomly to different kinds of plans and followed their behavior.
The Andersen healthcare utilization model is a conceptual model aimed at demonstrating the factors that lead to the use of health services. According to the model, the usage of health services (including inpatient care, physician visits, dental care etc.) is determined by three dynamics: predisposing factors, enabling factors, and need.
The health belief model (HBM) is a social psychological health behavior change model developed to explain and predict health-related behaviors, particularly in regard to the uptake of health services. [1] [2] The health belief model also refers to an individual's beliefs about preventing diseases, maintaining health, and striving for well-being ...
Health action process approach. The health action process approach (HAPA) is a psychological theory of health behavior change, developed by Ralf Schwarzer, Professor of Psychology at the Freie University Berlin of Berlin, Germany and SWPS University of Social Sciences and Humanities, Wroclaw, Poland, first published in 1992.
Investment in health takes the form of medical care purchases and other inputs and depreciation is interpreted as natural deterioration of health over time. [2] In the model, health enters the utility function directly as a good people derive pleasure from and indirectly as an investment which makes more healthy time available for market and ...
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Each behavioural change theory or model focuses on different factors in attempting to explain behaviour change. Of the many that exist, the most prevalent are learning theories, social cognitive theory, theories of reasoned action and planned behaviour, transtheoretical model of behavior change, the health action process approach, and the BJ Fogg model of behavior change.