Answer:
Non-participant observation
Explanation:
Patti does an observation type study. These types of studies can be divided into two groups: participant and non-participant observation.
As Patti wants to be unnoticed by the children, she is using the non-participant approach to studying. Here, the researcher does not form a part of a group and/or even becomes a member of it but deliberately stays apart from it. His main goal is to observe the behavior of such a group in a natural setting and without interfering himself.
