Work Package IV focuses on the role of media, media use, and media trust. This work package examines the supply of misinformation on different types of both traditional news media and digital media; processes of selective exposure and how these are influenced by pre-existing attitudes and beliefs; processes of selective attention and how these are influenced by pre-existing attitudes and beliefs; and the mediating and moderating role of media trust and hostile media perceptions in terms of influencing selective exposure, selective attention, and respondents’ attitudes and beliefs. Principal investigator is Jesper Strömbäck, Professor in Journalism and Political Communication at the University of Gothenburg.