From Silos to Ecologies (Comparative Policy Evaluation)

From Silos to Ecologies offers a new way to understand how knowledge is generated, interpreted, and used to address today’s most complex social challenges. It introduces the concept with clarity and purpose, showing why single studies, narrow methods, or rigid evaluation systems are no longer sufficient for problems shaped by complexity, uncertainty, and rapid change. The book also points to issues of evaluation capture and the problematic levels of independence.

Drawing on realist evaluation, in which real-world problems, rugged landscapes, and underlying theories of solutions, serve as starting points for testing―as well as systems thinking, and practice―the book argues for approaches that are more adaptive and grounded in real-world contexts. Humility and the fallibility of knowledge generation are part of that approach. Through contributions from leading scholars and practitioners, the volume demonstrates how different forms of evidence can work together to support better decisions in areas such as maternal health, brain health, poverty reduction, and community-led innovation. Case studies from Canada, China, and India illustrate how an ecology of evidence helps practitioners navigate complexity, learn from local contexts, and design interventions that are both effective and sustainable―but are not one-size-fits-all solutions.

A call for transformation runs throughout the book: moving from routine monitoring toward deeper explanation, from bureaucratic systems toward real (and not orchestrated) learning systems, and from isolated interventions toward solutions that reflect the lived realities of communities. From Silos to Ecologies is essential reading for scholars, students, evaluators, policymakers, and anyone seeking more meaningful ways to understand and improve the world around us.

Sanjeev Sridharan is Professor of Health Policy Evaluation at the University of Hawai‘i at Mānoa and serves as Evaluation Advisor to the United Nations Office of Internal Oversight Services and the Pan American Health Organization. Formerly with the Gates Foundation and the University of Toronto, his work focuses on sustainability, equity, and new evaluation paradigms for brain health.

Frans L. Leeuw is Professor Emeritus of Social Science Research on Public Policy and Law at Maastricht University. Formerly Director of the Netherlands National Institute of Justice Research and Dean of the Faculty of Humanities at the Open University, he also co- founded the European Evaluation Society. He has authored more than 10 books and 150 academic publications on evaluation, policy, and justice.