Online social networks are popular venues for computer-supported collaborative work and computer-supported collaborative learning. Professionals within the same discipline, such as software developers, often interact over various social network sites for knowledge updates and collective understandings. The current study aims at gathering empirical evidences concerning gender differences in online social network beliefs and behaviors. A total of 53 engineering postgraduate students were engaged in a blogging community for collaborative learning. Participants’ beliefs about collaboration and nature of knowledge and knowing (. epistemological beliefs) are investigated. More specifically, social network analysis metrics including indegree, out-degree, closeness centrality, and betweenness centrality are obtained from an 8-interval longitudinal SNA. | Gender differences in collaborative learning over online social networks: Epistemological beliefs and behaviors