Indirect reciprocity is an important factor that motivates individual contributions in social networks. However, prior studies of indirect reciprocity are often limited to a snapshot view of individual interactions in social environments. This paper analyzes indirect reciprocity from a dynamic...

Based on repeated expressions and the peer influence literatures, we tested the impact of elite politicians' online social networking behaviors on their partisanship behavior. We constructed a panel data for 414 Members of The 113th U.S. House of Representatives across a period of 9 months. To...

By employing a recently developed dynamic network model (separable temporal exponential-family random graph model), we study the effects of homophily based on gender, race, and political party on formation and dissolution of Representatives’ Twitter communications in forms of mentions and...