Helen Sullivan is Professor of Public Policy and Dean of the College of Asia and the Pacific at the Australian National University.

• 1. Introduction: The collaborative conundrum in public policy.- 2. A framework for analysing collaboration: actors, collaborative domains, and public policy elements.- 3. Ideas, agency, and collaboration.- 4. Rules, agency, and collaboration.- 5. Ethics, agency, and collaboration.- 6. Expertise, agency, and collaboration.- 7. Emotions, agency, and collaboration.- 8. Objects, agency, and collaboration.- 9. Practice, agency, and collaboration.- 10. Conclusion. Prospects and possibilities for public policy collaboration.