Olivier Klein teaches social psychology at the Université Libre de Bruxelles, where he is a full professor. He graduated from that university and pursued a post-doctorate at the University of Minnesota as BAEF scholar. Relevant to the Covid-19 crisis, he works on conspiracy beliefs and reactions to disinformation (including regarding vaccination). He is also interested in conflict between social groups, social stereotypes, prejudice and sexism. He has authored or co-authored more than 150 scientific articles and chapters and is the co-author of 4 books. He is co-editor in chief of the International Review of Social Psychology. He also authors a public interest blog on social psychology.