Meetings of the Group Decision and Negotiation series aim to bring together researchers and practitioners from the humanities, social sciences, economics, law, management, engineering, decision science and computer science. These diverse areas are characterized by different paradigms, methods of inquiry and goals. But we focus on common challenges, including the problems faced by decision makers who must address tensions and conflicts through all phases of negotiations and group decision processes. These challenges require researchers to understand both the dynamics of independent entities and the consequences of their interactions. To provide practitioners with knowledge and tools, researchers construct models and systems that can not only aid decision makers, but in some cases undertake decisionrelated activities on their behalf. As in all previous GDN meetings, Melvin F. Shakun has led us with his good spirit and a helping hand. He, together with Colin Eden, Keith W. Hipel, Gregory Kersten, Marc Kilgour and Floyd Lewis have helped us to adhere to the traditions that took root from the first GDN meeting in Glasgow, in 2000. Following memorable GDN meetings, including Vienna hosted by Rudolf Vetschera, Karlsruhe hosted by Christof Weinhardt, Montreal hosted by Gregory Kersten, Coimbra hosted by João Climaco and João Paulo Costa, Toronto hosted by Marc Kilgour, Delft hosted by Gwendolyn Kolfschoten, Recife hosted by Adiel Teixeira de Almeida, and Stockholm hosted by Bilyana Martinovski, the GDN 2014 meeting takes place in Toulouse and has been organized by Pascale Zaraté.