hundreds of papers written on the subject of collaboration, eleven contain an exhaustive literature review on the topic. These eleven papers cite 927 unique written sources; 106 of which are cited by more than one paper. Despite the interdisciplinary nature of the topic, very few formal theories, let alone mathematical or logical models, have been developed. In the majority of cases, authors discuss general frameworks within which to think about collaboration. These frameworks typically follow an input- mediator-output formulation. In the first case authors typically include the following input or antecedents to collaboration: “sector failure”, “power-resource-knowledge asymmetries”, “institutional design”, “contextual features”, or “individual characteristics.” To describe the collaborative process or dynamics, one author refers to concepts such as “structure/governance” and “formal/informal processes”, another to the interaction between collaborative behavior and emergent states. Another author describes the collaborative process as a cycle including: face-to-face dialogue, trust- building, commitment to the process, shared understanding, and intermediate outcomes, which lead to further face-to-face dialogue. Finally, many authors mention how these dynamics, combined in various ways with the initial conditions, generate outcomes. One set of authors4 describes collaboration in a system context, through the concept of collaborative dynamics embedded within a collaborative governance regime. These dynamics are described as a virtuous cycle wherein shared motivation, principled engagement and capacity for joint action interact. To move the discipline forward, some authors point to the need for better elaborations of collaboration theory and several more recognize the need to operationalize framework concepts and formulate testable models and hypotheses. Several authors recognize the need for research to be of better use to practitioners and to strengthen interdisciplinary research. Other needs include: usable research by practitioners, stronger interdisciplinary collaboration, and an exploration of the costs vis a vis benefits of collaboration. 4 COLLABORATION LANDSCAPE 3 Emerson, K., Nabatchi, T. & Balogh, S. (2012). An integrative framework for collaborative governance. Journal of Public Administra- tion Research and Theory, 22(1), 1–29. Photo: Ryan Siegel