I thought you would like to know of two forthcoming papers by our own Kelly Garrett that address the issue of selectivity in political media consumption. Congrats, Kelly!
Garrett, R. K. (Forthcoming). Politically motivated reinforcement seeking: Reframing the selective exposure debate Journal of Communication.Garrett, R. K. (Forthcoming). Echo chambers online?: Politically motivated selective exposure among Internet news users. Journal of Computer-Mediated Communication.