The mainstream assumption in cognitive science, artificial intelligence and analytic philosophy is that the defining characteristic of human cognition - intentionality, the capacity to represent - is biologically fundamental. This has driven research in cognitive science increasingly inwards and downwards to focus on activity at the neural and molecular levels, which, as Nancy Salay argues, is misguided. Revealing the central problems with this internalist idea, Salay puts forward an externalist paradigm of intentionality supported by recent empirical work in neuroscience, computer science, philosophy, animal cognition, developmental psychology, linguistics and anthropology. Drawing all of these insights together, she provides a unified framework in which to situate externalist views of intentionality, making progress towards a viable theory of cognition. Here is a comprehensive theoretical guide and a valuable empirical resource for those who view cognition through an extended and ena
