Jan Hartl is a sociologist, head of the STEM board of trustees and a founder of the STEM Institute for Empirical Research. In the 1970’ and 1980’, Jan Hartl worked as a researcher at the Institute for Philosophy and Sociology. His research interests lie in social issues, political analysis and public opinion tracking. He is the author of a plethora of research projects, publications and expert advice for clients both domestic and foreign. Jan Hartl has taught a number of courses at Charles University, faculties of social sciences and philosophy.