-
Diffusion of Innovations
Key scholars Gabriel Tarde, Friedrich Ratzel and Leo Frobenius (century 19) Ryan and Gross (1943) Everett Rogers (2003)
-
Gatekeeping
Key scholars Robert Park (1922) Kurt Zadek Lewin (1943) David Manning White, a journalism professor at Boston University (1950) Pamela Shoemaker, Martin Eichholz, Eunyi Kim, and Brenda Wrigley (2001, 2009, 2011)
