Jan Strelau

Jan Strelau (born 30 May 1931 in Gdańsk; died 4 August 2020 in Warsaw) was a Polish psychologist best known for his studies on temperament. He was professor of psychology at Warsaw University from 1968 to 2001 and was since 2001 professor at Warsaw School of Social Sciences and Humanities, where he took the positions of Vice-rector for Research and International Affairs (2002–2010), Vice-rector for Research (2010–2012), and the Chairman of the Board of Trustees (2012–2016). Provided by Wikipedia