Online Appendix for Social Networks and the Mass Media

This appendix contains six sections. The first section details and provides further justification for the parameters of the model, including selection into media. It also specifies the order of operations within the model. The second details the method of network construction and parameterization. The third lays out and justifies the methodology by which results given in the paper were derived. The fourth section provides guidelines for measuring the parameters in order to empirically test hypotheses drawn from the model. The fifth section offers additional results for media bias under selection. The sixth section provides results for a model variant in which there is an additional parameter, media penetration, which dictates whether or not someone has access to the media. In other words, it relaxes the assumption that the media’s information is seen by all.