The language-communication-society triangle defies traditional scientific approaches. Rather it is a phenomenon that calls for an integration of complex transdisciplinary perspectives if we are to make any progress in understanding how it works. The highly diverse agents in play are not merely cognitive and/or cultural but also emotional and behavioural in their specificity. Indeed the effort may require building a theoretical and methodological body of knowledge that can effectively convey the characteristic properties of phenomena in human terms. New complexity approaches allow us to rethink our limited and mechanistic images of human societies and create more appropriate emo-cognitive dynamic and holistic models. We have to enter into dialogue with the complexity views coming out of other more material sciences but we also need to take steps in the linguistic and psycho-sociological fields towards creating perspectives and concepts better fitted to human characteristics. Our understanding of complexity is different - but not opposed - to the one that is more commonly found in texts written by people working in physics or computer science for example. The goal of this book is to extend the knowledge of these other more human or socially oriented perspectives on complexity taking account of the language and communication singularities of human agents in society. Our understanding of complexity is different - but not opposed - to the one that is more commonly found in texts written by people working in physics or computer science for example. The goal of this bookis to extend the knowledge of these other more human or socially oriented perspectives on complexity taking account of the language and communication singularities of human agents in society.