Despite the swift spread of social network concepts and their applications and the rising use of network analysis in social science, there is no book that provides a thorough general introduction for the serious reader. "Understanding Social Networks" fills that gap by explaining the big ideas that underlie the social network phenomenon.…

Claims that group cohesiveness has proven to be astonishingly difficult to define precisely and consistently, although it remains a critical group-level variable. Notes that some researchers rely on classic definitions while others leave it undefined. Suggests that greater focus on the definitional issue should improve the quality of future…