He obtained his PhD at the University of Bergen in 1988 on two different dissertations on major mass movements in Norway and their relations with the medium of theatre 1890-1940.
In 1991 he was appointed Professor in Media Studies at the University of Bergen Gripsrud has lectured in a number of countries on different continents and has had several prolonged research stays internationally.
He was a visiting researcher at USC and UCLA in 1987, again at UCLA in 1993, in Paris 2008-10 (working at the Norwegian Centre at the Fondation Maison des Sciences de l'Homme), in Brussels in 2011 (as winner of the International Franqui Chair award, working at the Vrije Universiteit Brussels, Université Libre de Bruxelles and Universiteit Gent), and in Helsinki 2017-18 as recipient of the Helsingin Sanomat Fellowship at the Helsinki Collegium for Advanced Studies.
In addition, Gripsrud been involved in cultural policy work, among other things, he was a member of the Norwegian National Commission for UNESCO and Chairman of the Public Service Broadcasting Council.
He has led a number of national and international research projects, such as SCANPUB - The Immigration Issue in Scandinavian Public Spheres 1970 - 2015.