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Transtheoretical model


The transtheoretical model of behavior change assesses an individual's readiness to act on a new healthier behavior, and provides strategies, or processes of change to guide the individual through the stages of change to Action and Maintenance. It is composed of the following constructs: stages of change, processes of change, self-efficacy, decisional balance and temptations.

The transtheoretical model is also known by the abbreviation "TTM" and by the term "stages of change". A popular book, Changing for Good, and a new book, Changing to Thrive and articles in the news media have discussed the model. It is "arguably the dominant model of health behaviour change, having received unprecedented research attention, yet it has simultaneously attracted criticism."

James O. Prochaska of the University of Rhode Island, Carlo Di Clemente and colleagues developed the transtheoretical model beginning in 1977. It is based on analysis and use of different theories of psychotherapy, hence the name "transtheoretical."

Prochaska and colleagues refined the model on the basis of research that they published in peer-reviewed journals and books.

This construct refers to the temporal dimension of behavioural change. In the transtheoretical model, change is a "process involving progress through a series of stages":

Relapse/Recycling: In addition, the researchers conceptualized "relapse" (recycling) which is not a stage in itself but rather the "return from Action or Maintenance to an earlier stage".

The quantitative definition of the stages of change (see below) it is perhaps the most notorious feature of the model. However it is also one of the most critiqued, even in the field of smoking cessation, where it was originally formulated. It has been said that such quantitative definition (i.e. a person is in preparation if it intends to change within a month) does not reflect the nature of behaviour change, that it does not have better predictive power than simpler questions (i.e. "do you have plans to change..."), and that it has problems regarding its classification reliability.

Stage 1: Precontemplation (Not Ready)

People at this stage do not intend to start the healthy behavior in the near future (within 6 months), and may be unaware of the need to change. People here learn more about healthy behavior: they are encouraged to think about the pros of changing their behavior and to feel emotions about the effects of their negative behavior on others.

Precontemplators typically underestimate the pros of changing, overestimate the cons, and often are not aware of making such mistakes.

One of the most effective steps that others can help with at this stage is to encourage them to become more mindful of their decision making and more conscious of the multiple benefits of changing an unhealthy behavior.


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