Late 1960s up to 1980s represent an important change in the history of the Slovak ethnology. Longitudinal fieldwork of the social systems of the Slovak countryside started during those decades to displace traditional topics of the Slovak ethnography. Sona Svecova played the central role in the change of ethnological/anthropological topic. She started and made long-term fieldworks of the social relations in several Slovak villages (Cicmany, Jedlove Kostolany, Hrusov). From 1970s up to 1990s she was a head of the working group for the comparative study of social systems and she influenced the whole generation of the Slovak ethnographers and some from Moravia and Bohemia, too.