Final answer:
A positive correlation suggests that patients may work harder when a physical therapist is present, although individual factors may also affect motivation.
Step-by-step explanation:
A positive correlation means that as one variable increases, the other variable also increases. In the context of this question, if there is a positive correlation between a patient working harder and the physical therapist (PT) standing there with them, it means that the presence of the PT motivates the patient to exert more effort.
For example, if a PT is standing beside a patient during a workout session, the patient may feel a sense of accountability and be more inclined to follow the exercises and give their best effort. However, it is important to note that the effectiveness of the PT's presence may vary from person to person, as individual motivations and attitudes can also play a role.
In conclusion, it is generally true that patients may work harder when the PT is standing there with them due to the positive correlation between the PT's presence and increased effort. However, this may not apply universally to every individual, as personal factors can influence motivation and engagement.