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Transtheoretical Model

The transtheoretical model (TTM) was developed by James Prochaska and Carlo DiClemente around 1980 to explain how people change in psychotherapy. The model was soon adapted to describe behavior change with respect to addictions, especially smoking cessation. In the past 10 years, the model has been applied across a wide range of behaviors important to public health, including diet, exercise, sun exposure, alcohol and drug abuse, mammography screening, condom use, stress management, weight control, diabetes self-management, and many more. First conceptualized primarily as a model of self-change, the model was elaborated to include how people change with professional help and has now become one of the most widely used frameworks for the development and dissemination of public health interventions.

The basic premise of the TTM is ...

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