Network Location and Policy-Oriented Behavior: An Analysis of Two-Mode Networks of Coauthored Documents Concerning Climate Change in the Great Lakes Region* ,† Ken Frank, I-Chien Chen, Youngmi Lee, Scott Kalafatis, Tingqiao Chen, Yun-Jia Lo, and Maria Carmen Lemos This study explores how a scientist’s location in science-based policy networks can affect her policy- oriented behaviors. In particular, we hypothesize that those scientists who fill structural holes in their networks will be more likely than others to engage in policy-oriented behaviors. The network data are defined by scientists’ coauthorship on policy documents regarding climate change in the Great Lakes. We employ a two-mode network analysis to identify clusters of scientists who coauthored similar documents, and relative to those clusters, we identify those who fill structural holes by bridging between clusters. We find that those scientists who bridged between clusters were more likely to engage in policy-oriented behaviors of policy advocacy and advising than were others in the network. This is an example of a link between network location and policy-oriented behavior indicative of the broader phenomenon of how individuals exert agency, given structural constraints. KEY WORDS: policy behavior, networks, scientists, climate change Introduction The potential threat posed by climate change on socioecological systems has raised the stakes for the role of climate change science in informing policymaking (e.g., IPCC, 2001, 2007; National Research Council, 2009). Yet, despite a growing body of social science focusing on the climate science–policy nexus (Dilling & Lemos, 2011), less attention has been paid to how existing science diffuses to policy and how climate scientists in diverse fields work collectively to influence climate policy (Bolin, *Originally presented at the 4th Annual Conference on Political Science, University of Michigan, Ann Arbor, MI, June 14–18, 2011. † This study is part of the National Oceanic and Atmospheric Administration-funded Great Lakes Integrated Sciences and Assessments (GLISA), which seeks to improve the intersection between science and policy in the Great Lakes region. The Policy Studies Journal, Vol. 40, No. 3, 2012 492 0190-292X © 2012 Policy Studies Organization Published by Wiley Periodicals, Inc., 350 Main Street, Malden, MA 02148, USA, and 9600 Garsington Road, Oxford, OX4 2DQ.