Triangulation is a term in qualitative research methods derived from navigation, in which sailors try to discover their exact position on a map by taking bearings on two landmarks. The methodological triangulation is the most frequently applied approach, using different methods when studying a subject (1) such as the combination of ethnographic observations with interviews or the mixed methods approach which is mixing qualitative and quantitative methods in one study.(2) Denzin discerned three other types of triangulation next to the methodological triangulation: data, investigator and theory triangulation.(3) read more