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.

no , per capita income is not a true measure of the development because: -it only tells us about average income not how income is distributed among the people.it only give us an idea of the economic aspect.it is only at the qualitative basis.moreover, income is not only the way of development other factors are also as much as important as income.