As usual, the Proceedings of the International Colloquium on Cognitive Science include leading-edge work by outstanding researchers in the field. This volume contains three kinds of papers corresponding to three of the main disciplines in cognitive science: philosophy, psychology, and artificial intelligence. The title - Cognition, Agency and Rationality - captures the main issues addressed by the papers. Of course, all are concerned with cognition, but some are especially centred on the very concept of rationality, while others focus on (multiple) agency. The diversity of their disciplinary origins and standpoints not only reflects the main topics and the range of different positions presented at ICCS-97, as well as demonstrating the richness, fruitfulness and diversity of research in cognitive science today.

DISCOURSE, INTERACTION, AND COMMUNICATION Co-organized by the Department of Logic and Philosophy of Science and the Institute for Logic, Cognition, Language, and Infonnation (ILCLI) both from the University of the Basque Country, tlle Fourth International Colloquium on Cognitive Science (ICCS-95) gathered at Donostia - San Sebastian ti'om May 3 to 6, 1995, with the following as its main topics: 1. Social Action and Cooperation. 2. Cognitive Approaches in Discourse Processing: Grammatical and Semantical Aspects. 3. Models of Infonnation in Communication Systems. 4. Cognitive Simulation: Scope and Limits. More tllan one hundred researchers from all over the world exchanged their most recent contributions to Cognitive Science in an exceptionally fruitful annosphere. In this volume we include a small though representative sample of tlle main papers. They all were invited papers except the one by Peter Juel Henrichsen, a contributed paper tllat merited tlle IBERDROLA - Gipuzkoako Foru Aldundia: Best Paper Award, set up in ICCS-95 for the first time.

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.

DISCOURSE, INTERACTION, AND COMMUNICATION Co-organized by the Department of Logic and Philosophy of Science and the Institute for Logic, Cognition, Language, and Infonnation (ILCLI) both from the University of the Basque Country, tlle Fourth International Colloquium on Cognitive Science (ICCS-95) gathered at Donostia - San Sebastian ti'om May 3 to 6, 1995, with the following as its main topics: 1. Social Action and Cooperation. 2. Cognitive Approaches in Discourse Processing: Grammatical and Semantical Aspects. 3. Models of Infonnation in Communication Systems. 4. Cognitive Simulation: Scope and Limits. More tllan one hundred researchers from all over the world exchanged their most recent contributions to Cognitive Science in an exceptionally fruitful annosphere. In this volume we include a small though representative sample of tlle main papers. They all were invited papers except the one by Peter Juel Henrichsen, a contributed paper tllat merited tlle IBERDROLA - Gipuzkoako Foru Aldundia: Best Paper Award, set up in ICCS-95 for the first time.

As usual, the Proceedings of the International Colloquium on Cognitive Science include leading-edge work by outstanding researchers in the field. This volume contains three kinds of papers corresponding to three of the main disciplines in cognitive science: philosophy, psychology, and artificial intelligence. The title - Cognition, Agency and Rationality - captures the main issues addressed by the papers. Of course, all are concerned with cognition, but some are especially centred on the very concept of rationality, while others focus on (multiple) agency. The diversity of their disciplinary origins and standpoints not only reflects the main topics and the range of different positions presented at ICCS-97, as well as demonstrating the richness, fruitfulness and diversity of research in cognitive science today.

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.