Which of the following is NOT a component of the stages of change model?

The stages of change model, often referred to as the Transtheoretical Model, includes several key phases that individuals typically go through when making a change in behavior. The model comprises precontemplation, contemplation, preparation, action, and maintenance.

In this context, "activation" is not one of the established components of the model, which makes it the correct choice for the question asking which is NOT a component. Each component in the model builds upon the previous stages, outlining a pathway through which a person can move from not considering a change to successfully maintaining that change.

The stages of contemplation, preparation, and maintenance are essential steps in understanding how individuals progress through the process of change. Contemplation involves recognizing the need for change, preparation includes planning and making small steps towards change, and maintenance involves sustaining the change over time.