Final answer:
The Stages of Change Model's phase of acknowledging a problem but not being ready to make a change is known as the Precontemplation stage. This stage is characterized by recognition without commitment to change, which is essential before moving to the Contemplation stage.
Step-by-step explanation:
In the Stages of Change Model, the phase of acknowledging that there is a problem but not yet being ready or sure of wanting to make a change refers to the Precontemplation stage. This is the initial stage where individuals are beginning to recognize that they have a behavior that may be problematic, yet they have not committed to taking action. Often, a person in this stage may feel ambivalent towards change, possibly due to fear of the unknown, or due to perceived disloyalty to their core beliefs or social groups.
It is essential to acknowledge the problem before beginning the process of changing, as without this recognition, no deliberate action to address the issue can take place. This stage is crucial because it leads to the next stage, Contemplation, where the individual starts to think about the possibility of change more seriously.