Every two years since 1989, an international colloquium on cognitive science is held in Donostia - San Sebastian, attracting the most important researchers in that field. This volume is a collection of the invited papers to the Sixth International Colloquium on Cognitive Science (ICCS-99), written from a multidisciplinary, cognitive perspective, and addressing various essential topics such as self-knowledge, intention, consciousness, language use, learning and discourse. This collection reflects not only the various interdisciplinary origins and standpoints of the participating researchers, but also the richness, fruitfulness, and exciting state of research in the field of cognitive science today. A must-read for anyone interested in philosophy, linguistics, psychology, and computer science, and in the perception of these topics from the perspective of cognitive science.

PHILOSOPHY AND COGNITIVE SCIENCE: CATEGORIES, CONSCIOUSNESS, AND REASONING The individual man, since his separate existence is manifested only by ignorance and error, so far as he is anything apart from his fellows, and from what he and they are to be, is only a negation. Peirce, Some Consequences of Four Incapacities. 1868. For the second time the International Colloquium on Cognitive Science gathered at San Sebastian from May, 7-11, 1991 to discuss the following main topics: Knowledge of Categories Consciousness Reasoning and Interpretation Evolution, Biology, and Mind It is not an easy task to introduce in a few words the content of this volume. We have collected eleven invited papers presented at the Colloquium, which means the substantial part of it. Unfortunately, it has not been possible to include all the invited lectures of the meeting. Before sketching and showing the relevance of each paper, let us explain the reasons for having adopted the decision to organize each two years an international colloquium on Cognitive Science at Donostia (San Sebastian). First of all, Cognitive Science is a very active research area in the world, linking multidisciplinary efforts coming mostly from psychology, artificial intelligence, theoretical linguistics and neurobiology, and using more and more formal tools. We think that this new discipline lacks solid foundations, and in this sense philosophy, particularly knowledge theory, and logic must be called for.

THE PLACE OF PHILOSOPHY IN COGNITIVE SCIENCE During the last few years, many books have been published and many meetings have been held on Cognitive Science. A cursory review of their contents shows such a diversity of topics and approaches that one might well infer that there are no genuine criteria for classifying a paper or a lecture as a contribution to Cognitive Science. It is as though the only criterion is to have appeared in a book or in the programme of a meeting or title we can find the expression " . . . Cognitive Science" in whose name or something like that. Perhaps this situation is due to the (relative) youth of the field, which is seeking its own identity, still involved in a process of formation and consolidation within the scientific community; but there are actually deep disagreements about how a science of the mind should be worked out, including how to understand its own subject, that is, "the mind. "While for some the term makes reference to a set of phenomena impossible to grasp by any scientific approach, for others "the mind" would be a sort of myth, and the mental terms await elimination by other more handy and empirically tractable terms.

A speech for the defence in a Paris murder trial, a road-safety slogan, Hobbes' political theory; each appeals to reason of a kind, but it remains an oblique and rhetoricalldnd. Each relies on comparisons rather than on direct statements, and none can override or supersede the conclusions of ethical reasoning proper. Nevertheless, just as slogans may do more for road safety than the mere recital of accident statistics, or of the evidence given at coroners' inquests, so the arguments of a Hobbes or a Bentham may be of greater practical effect than the assertion of genuinely ethical or political statements, however true and relevant these may be. Stephen Toulmin, Reason in Ethics, 1950. The International Colloquium on Cognitive Science (ICCS), held in Donostia - San Sebastian every two years since 1989, has become one of the most important plazas for cognitive scientists in Europe to present the results of their research and to exchange ideas. The seventh edition, co-organized as usual by the Institute for Logic, Cognition, Language, and Information (ILCLI) and the Department of Logic and Philosophy of Science, both from the University of the Basque Country, took place from May 9 to 12, 200 1, addressing the following main topics: 1. Truth: Epistemology and Logic. 2. Rationality in a Social Setting. 3. Music, Language, and Cognition. Vlll TRUTH, RATIONALITY, COGNITION, AND MUSIC 4. The Order of Discourse: Logic, Pragmatics, and Rhetoric.

Every two years since 1989, an international colloquium on cognitive science is held in Donostia - San Sebastian, attracting the most important researchers in that field. This volume is a collection of the invited papers to the Sixth International Colloquium on Cognitive Science (ICCS-99), written from a multidisciplinary, cognitive perspective, and addressing various essential topics such as self-knowledge, intention, consciousness, language use, learning and discourse. This collection reflects not only the various interdisciplinary origins and standpoints of the participating researchers, but also the richness, fruitfulness, and exciting state of research in the field of cognitive science today. A must-read for anyone interested in philosophy, linguistics, psychology, and computer science, and in the perception of these topics from the perspective of cognitive science.

THE PLACE OF PHILOSOPHY IN COGNITIVE SCIENCE During the last few years, many books have been published and many meetings have been held on Cognitive Science. A cursory review of their contents shows such a diversity of topics and approaches that one might well infer that there are no genuine criteria for classifying a paper or a lecture as a contribution to Cognitive Science. It is as though the only criterion is to have appeared in a book or in the programme of a meeting or title we can find the expression " . . . Cognitive Science" in whose name or something like that. Perhaps this situation is due to the (relative) youth of the field, which is seeking its own identity, still involved in a process of formation and consolidation within the scientific community; but there are actually deep disagreements about how a science of the mind should be worked out, including how to understand its own subject, that is, "the mind. "While for some the term makes reference to a set of phenomena impossible to grasp by any scientific approach, for others "the mind" would be a sort of myth, and the mental terms await elimination by other more handy and empirically tractable terms.

A speech for the defence in a Paris murder trial, a road-safety slogan, Hobbes' political theory; each appeals to reason of a kind, but it remains an oblique and rhetoricalldnd. Each relies on comparisons rather than on direct statements, and none can override or supersede the conclusions of ethical reasoning proper. Nevertheless, just as slogans may do more for road safety than the mere recital of accident statistics, or of the evidence given at coroners' inquests, so the arguments of a Hobbes or a Bentham may be of greater practical effect than the assertion of genuinely ethical or political statements, however true and relevant these may be. Stephen Toulmin, Reason in Ethics, 1950. The International Colloquium on Cognitive Science (ICCS), held in Donostia - San Sebastian every two years since 1989, has become one of the most important plazas for cognitive scientists in Europe to present the results of their research and to exchange ideas. The seventh edition, co-organized as usual by the Institute for Logic, Cognition, Language, and Information (ILCLI) and the Department of Logic and Philosophy of Science, both from the University of the Basque Country, took place from May 9 to 12, 200 1, addressing the following main topics: 1. Truth: Epistemology and Logic. 2. Rationality in a Social Setting. 3. Music, Language, and Cognition. Vlll TRUTH, RATIONALITY, COGNITION, AND MUSIC 4. The Order of Discourse: Logic, Pragmatics, and Rhetoric.

PHILOSOPHY AND COGNITIVE SCIENCE: CATEGORIES, CONSCIOUSNESS, AND REASONING The individual man, since his separate existence is manifested only by ignorance and error, so far as he is anything apart from his fellows, and from what he and they are to be, is only a negation. Peirce, Some Consequences of Four Incapacities. 1868. For the second time the International Colloquium on Cognitive Science gathered at San Sebastian from May, 7-11, 1991 to discuss the following main topics: Knowledge of Categories Consciousness Reasoning and Interpretation Evolution, Biology, and Mind It is not an easy task to introduce in a few words the content of this volume. We have collected eleven invited papers presented at the Colloquium, which means the substantial part of it. Unfortunately, it has not been possible to include all the invited lectures of the meeting. Before sketching and showing the relevance of each paper, let us explain the reasons for having adopted the decision to organize each two years an international colloquium on Cognitive Science at Donostia (San Sebastian). First of all, Cognitive Science is a very active research area in the world, linking multidisciplinary efforts coming mostly from psychology, artificial intelligence, theoretical linguistics and neurobiology, and using more and more formal tools. We think that this new discipline lacks solid foundations, and in this sense philosophy, particularly knowledge theory, and logic must be called for.