Published online by Cambridge University Press: 28 March 2008
Intellectual exchange is central to progress in any discipline,including political science. The transfer of knowledge, ideas, andtechniques takes place in many forums (e.g., advisor-studentmeetings, conferences, department lounges) and it is no simple taskto systematically identify or quantify this interchange. In generalthough, the fruition of a successful or insightful idea is apublished journal article or book. The way in which the author(s) ofa published piece of work acknowledges previous or contemporary workthat contributed to its development is via references or citations.Thus, while we cannot easily keep track of theentire process of intellectual exchange thatleads to publication, citations inform us of other (usuallypublished) work that influenced and contributed to the articles andbooks that make up the research output of the field.We thank two anonymous referees for helpfulcomments on content and structure.