My research focuses on motivational and social decision making processes that underlie people's ability to cooperatively solve social dilemmas in environmental and human governance situations (e.g., sustainable management of environmental resources and voluntary contributions to public goods). I am also interested in factors that promote environmentally responsible behavior, and conduct research on social justice dimensions of community-based governance and public participation in environmental decision making. My recent work pertains to water governance, and resilient management of complex rivers and streams.