People in this stage often underestimate the pros of changing behavior and place too much emphasis on the cons of changing behavior. People are often unaware that their behavior is problematic or produces negative consequences. Precontemplation - In this stage, people do not intend to take action in the foreseeable future (defined as within the next 6 months).For each stage of change, different intervention strategies are most effective at moving the person to the next stage of change and subsequently through the model to maintenance, the ideal stage of behavior. Termination was not part of the original model and is less often used in application of stages of change for health-related behaviors. The TTM posits that individuals move through six stages of change: precontemplation, contemplation, preparation, action, maintenance, and termination. The TTM is not a theory but a model different behavioral theories and constructs can be applied to various stages of the model where they may be most effective. Rather, change in behavior, especially habitual behavior, occurs continuously through a cyclical process. The TTM operates on the assumption that people do not change behaviors quickly and decisively. Thus, the Transtheoretical Model (TTM) focuses on the decision-making of the individual and is a model of intentional change. It was determined that people quit smoking if they were ready to do so. The Transtheoretical Model (also called the Stages of Change Model), developed by Prochaska and DiClemente in the late 1970s, evolved through studies examining the experiences of smokers who quit on their own with those requiring further treatment to understand why some people were capable of quitting on their own. The Transtheoretical Model (Stages of Change)
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