Guo's research focuses mainly on agenda-setting theory, alternative media, and international communication. Maxwell McCombs is the Jesse H. Jones Centennial Chair in Communication Emeritus at the University of Texas at Austin and has been a visiting professor annually at the University of Navarra in Spain since 1994. Professor McCombs is internationally recognized for his research on the agenda-setting role of mass communication, and the influence of the media on the focus of public attention.show more