Social Presence

Social presence "is a psychological phenomenon regarding how interactants perceive one another" (Baym, 2010, p. 53). Social Presence Theory looks at the idea of others "as real and present" (p. 53). On the other hand, Media Richness Theory focuses on the medium.

References:

Baym, N.K. (2010). Personal Connections in the Digital Age. Cambridge, UK: Polity.