“…Scholars have applied the concept of structural pluralism to various subfields of communication, such as journalism and news reporting (e.g., Demers, 1998;Hindman, 1996;Jeffres, Cutietta, Sekerka, & Lee, 2000), science communication (e.g., Dunwoody & Griffin, 1999;Griffin & Dunwoody, 1995, health communication (Viswanath, Steele, & Finnegan, 2006), public relations (e.g., Lowrey, Gower, Evans, & Mackay, 2006), advertising (Demers, 1994b), social movements (McCluskey, Stein, Boyle, & McLeod, 2009;McLeod & Hertog, 1999), and new communication technologies (Armstrong, 2008;Hindman, Ernst, & Richardson, 2001). In addition, scholars have proposed and tested various conceptual and operational definitions of structural pluralism that contain both single and multiple dimensions (see e.g., Jeffres, 2002;Armstrong, 2006).…”