Final answer:
The presence of the Hawthorne effect in a hospital setting during an accreditation visit would be indicated by staff members changing their usual behavior, such as being more diligent or strictly following protocols, because they know they are under observation.
Step-by-step explanation:
The staff behavior that would most clearly suggest the presence of the Hawthorne effect is if hospital staff members significantly alter their normal work routines in more positive ways when they are aware that accreditors are observing them. This could involve exhibiting greater diligence, following protocols more strictly, or displaying more enthusiasm and cooperative behavior than usual. The Hawthorne effect occurs when individuals modify their behavior in response to their awareness of being observed as part of a study or assessment, as they may unconsciously aim to present themselves or their environment in the best light possible.