The Institute of Sociology is at present the biggest Bulgarian centre of social research that has at its disposal a significant scientific and research potential. The research programme "Social restructuring, stratification, inequalities, types of conflicts" has been the top thematic priority of the Institute of Sociology since 2003.
Velina Topalova, Senior Research Associate, Director of the Institute. Topalova's scientific interest lays in the sociology of perception of social stratification and social inequalities. She leads of numerous national and 12 international projects (responsible for Bulgarian part) and published over 75 major works including books and papers on social inequality.