Vos's research examines the roles of journalism, media sociology and gatekeeping, media history, and media policy. His work also explores how change has happened in print, broadcast, and digital news, public relations, and advertising.
Vos is co-author, co-editor, or editor of four books and the International Communication Association's (ICA) International Encyclopedia of Journalism Studies. He is the book series editor of Journalism in Perspective from the University of Missouri Press. Vos has won the Best American Journalism Article award, the Laurence R. Campbell Faculty Research Award, the James E. Murphy Top Faculty Paper Award, the Leslie J. Moeller Award, the Kappa Tau Alpha research award; and top-three faculty paper awards from AEJMC and ICA.
Vos is the primary investigator for the Discourses on Journalism project and lead U.S. investigator for the 100-plus-country Worlds of Journalism Study.