This article aims to demonstrate the inclusion, in the limits of the methodological model of health qualitative research, of a natural analyzer arising from the dynamics of the relation between researcher and research subject. The inquiry on the maternal mood among mothers of premature babies after hospital discharge, object of doctorate research in Woman's Health (Fiocruz-Institute Fernandes Figueira), had an interface with the emotional reactions lived within the intensive care environment. The analysis and interpretation of the material concerning this period helped repairing the condition of moral vulnerability of group that is often excluded of the awareness about the processes of humanized health care, of mothers in joint lodging during their children's internment, thus contributing for reflections on the ethics in research with human beings.
ethics; natural analyzer; qualitative research