The field research method that turns researchers into participants and participants into researchers is known as .

Participatory action research

Explanation:

Participatory action research is an approach towards a specific approach in which the participants and the researchers are equally effected by the particular research. The research, experiment and the analysis is completed by the participants and the researchers collectively. This research is based on the thought of bringing a change in the world by collectively dealing and by the methods of self reflective inquires.

because the early people found out about it.