In the wake of Frege's attack on psychologism and the subsequent influence of Logical Positivism, psychological considerations in philosophy came to be viewed with suspicion. Philosophical questions, especially epistemological ones, were viewed as 'logical' questions, and logic was sharply separated from psychology. Various efforts have been made of late to reconnect epistemology with psychology. But there is little agreement about how such connections should be made, and doubts about the place of psychology within epistemology are still much in evidence. It (...) therefore remains to be clarified just how such links should be established, and what impact they would have on the direction of epistemology. (shrink)

Philosophy as now pursued in British universities (and many others) is a highly argumentative discipline. The philosophers most studied are not sages who ...

In this article I explore two accounts of the Fallacy of Many Questions made famous by the question "Have you stopped beating your wife?" The accounts are from the works of Lennart Aqvist and Noel Belnap, and the two authors differ in their accounts of the fallacy. Then I give my own account based on understanding a facet of erotetic logic, i. e., the logic of questions.

In section 1 I offer a definition of psychologism which applies to many of the apparently quite disparate uses that philosophers have made of the term. In section 2 I map out some distinct varieties of psychologism. In a short section 3 I indicate how the changing academic climate has injected a new urgency into the debate on psychologism. In section 4 I offer an argument for a variety of psychologism which has important consequences for cognitive science, and in section (...) 5 I consider some objections to the argument. (shrink)

First published in 2000. Routledge is an imprint of Taylor & Francis, an informa company.

The object of this paper is to show why recent research in the psychology of deductive and probabilistic reasoning does not have.

[This book offers] compilation of examples from TV, newspapers, magazines, advertisements, and our nation's political dialogue.

For more than twenty years, introductory logic students have relied on this text to provide clear lessons as well as practical applications of the discipline. Robert Baum emphasizes formal logic and utilizes such elements of popular culture as cartoons and advertisements to illustrate technical concepts. Logic, 4/e addresses all the basic concepts, including informal analysis of statements, arguments, Aristotelian logic, propositional logic, quantificational logic, enumerative induction, the scientific method, probability, informal fallacies, definitions, and applied logic. As with previous editions, Logic, (...) 4/e is extremely flexible--most of the chapters can be included or excluded from a particular course depending on the goals of the course and the time available. This fourth edition features hundreds of additional exercises throughout. (shrink)

Critical Thinking as Applied Epistemology: Relocating Critical Thinking in the Philosophical Landscape.

Begging the question — roughly, positing in the premises what is to be proved in the conclusion — is a perplexing fallacy.1 Are not question-begging arguments valid? Yes, we may find ourselves saying, but they are fallacious despite their validity, owing to their inability to establish the truth of a conclusion which is not already known. But are not question-begging arguments sometimes effective in bringing an audience to an awareness of the truth of the conclusion? How can a dialectical maneuver (...) which is capable of effecting epistemic progress be a fallacy, an illegitimate maneuver? In such cases of success, we can reply, the audience was simply in need of some logical coaching — a question-begging argument is of its very nature ill-suited for producing new knowledge in someone who is being fully rational. But then are not all valid arguments question-begging, since the conclusions are at least implicitly contained in the premises in such a way that a fully rational individual can never augment his knowledge through such arguments? No, we may answer, only those valid arguments in which the proposition constituting the conclusion appears, whether distinguised or not, as a distinct premise are question-begging; if several premises go together to imply a conclusion, the argument does not beg the question, But why is it legitimate to posit premises which more-or-less implicitly contain the conclusion, while it is illegitimate to posit premises which more-or-less explicitly contain the conclusion? Because, we are tempted to say, a question-begging argument is one in which what is to be proved in the conclusion is posited in the premises, and this positing must be more-or-less explicit in order for a fallacy to be committed! (shrink)

Begriffsschrift, eine der arithmetischen nachgebildete Formelsprache des reinen Denkens / von Dr. Gottlob Frege,...Date de l'edition originale : 1879Ce livre est la reproduction fidele d'une oeuvre publiee avant 1920 et fait partie d'une collection de livres reimprimes a la demande editee par Hachette Livre, dans le cadre d'un partenariat avec la Bibliotheque nationale de France, offrant l'opportunite d'acceder a des ouvrages anciens et souvent rares issus des fonds patrimoniaux de la BnF.Les oeuvres faisant partie de cette collection ont ete numerisees (...) par la BnF et sont presentes sur Gallica, sa bibliotheque numerique.En entreprenant de redonner vie a ces ouvrages au travers d'une collection de livres reimprimes a la demande, nous leur donnons la possibilite de rencontrer un public elargi et participons a la transmission de connaissances et de savoirs parfois difficilement accessibles.Nous avons cherche a concilier la reproduction fidele d'un livre ancien a partir de sa version numerisee avec le souci d'un confort de lecture optimal. Nous esperons que les ouvrages de cette nouvelle collection vous apporteront entiere satisfaction.Pour plus d'informations, rendez-vous sur www.hachettebnf.frhttp://gallica.bnf.fr/ark:/12148/bpt6k65658c. (shrink)

For this second edition, the editors have returned to Austin's original lecture notes, amending the printed text where it seemed necessary.

Offering an innovative approach to critical thinking, Good Reasoning Matters! identifies the essential structure of good arguments in a variety of contexts and also provides guidelines to help students construct their own effective arguments. In addition to examining the most common features of faulty reasoning--slanting, bias, propaganda, vagueness, ambiguity, and a common failure to consider opposing points of view--the book introduces a variety of argument schemes and rhetorical techniques. This edition adds material on visual arguments and more exercises.

Change in View offers an entirely original approach to the philosophical study of reasoning by identifying principles of reasoning with principles for revising one's beliefs and intentions and not with principles of logic. This crucial observation leads to a number of important and interesting consequences that impinge on psychology and artificial intelligence as well as on various branches of philosophy, from epistemology to ethics and action theory. Gilbert Harman is Professor of Philosophy at Princeton University. A Bradford Book.

The essentials of Aristotelian logic in brief, with exercises.