Effects of mass medias on the dynamics of social contagions

Individuals can get the behavioral information from mass medias, as they always face various kinds of mass medias. Unfortunately, a systematical study about the effects of mass medias on social contagions is still lacking. To this end, we propose a novel non-Markovian social contagion model, in which individuals obtain the behavioral information not only from their neighbors but also from the mass medias. Through extensive numerical simulations, we find that the mass medias promote the adoption of behavior, and decrease the critical behavioral information transmission probability. In addition, we also note that the heterogeneity of degree distribution promotes the behavior adoption.