1
Hotchkiss, 2001.
2
Stenn, 1980.
3
Hotchkiss, 2001; Potter, Kaufmann, Blake and Feldman, 1984.
4
Potter, Kaufmann, Blake and Feldman, 1984.
5
Olsen, MacKinnon, Goulding, Bean and Slutsker, 2000; Mungai, Behravesh and Gould, 2015.
6
Pew Research Center, 2015.
7
Barber, 1961; Kuhn, 1962; Thagard, 1992.
8
Pew Research Center, 2009; Leiserowitz, Maibach, Roser-Renouf, Feinberg and Howe, 2013; Lewandowsky, Ecker, Seifert, Schwarz and Cook, 2012; Miller, Scott and Okamoto, 2006.
