Product Description: Use of argumentation methods applied to legal reasoning is a relatively new field of study. The book provides a survey of the leading problems, and outlines how future research using argumentation-based methods show great promise of leading to useful solutions...read more

Product Description: Although fallacies have been common since Aristotle, until recently little attention has been devoted to identifying and defining them. Furthermore, the concept of fallacy itself has lacked a sufficiently clear meaning to make it a useful tool for evaluating arguments...read more (view table of contents, read Amazon.com's description)

Explores the operation of logical reasoning in trials and legal argumentation, specifically as it applies to the law of evidence. (view table of contents)

Product Description: We often feel that an argument should be doubted or held as suspicious because it has a bias. But bias isn t always wrong. It is a normal phenomenon in advocacy argumentation, and in many cases it is to be expected. Yet sometimes bias can be quite harmful in argumentation...read more (view table of contents, read Amazon.com's description)

Arguments from popular opinion have long been regarded with suspicion, and in most logic textbooks the ad populum argument is classified as a fallacy. Douglas Walton now asks whether this negative evaluation is always justified, particularly in a democratic system where decisions are based on majority opinion.In this insightful book, Walton maintains that there is a genuine type of argumentation based on commonly accepted opinions and presumptions that should represent a standard of rational decision-making on important issues, especially those of a personal and political nature. He shows how to judge arguments based on appeals to popular opinion in a more balanced way, identifying eleven subtypes of the ad populum argument and providing a pragmatic method to evaluate each of these types.Walton has examined dozens of logic texts and drawn on a wide range of literature to reveal the many uses and misuses of popular opinion. He contrasts the traditional discussion of ad populum in Greek rhetoric with recent textbook treatment, then contrasts these contemporary views with his own dialectical perspective in order to clarify often confused appeals to prejudice and appeals to common knowledge.Although appeal to popular opinion has long been a powerful argumentative tactic, this is the first book to systematically describe and evaluate it as a well-defined type of argument with its own special characteristics. It enables us to deal with these often deceptive arguments in a critically balanced way and makes an original contribution to an important strand of rhetoric.

(view table of contents)

A new pragmatic approach, based on the latest developments in argumentation theory, analyzing appeal to expert opinion as a form of argument.Reliance on authority has always been a common recourse in argumentation, perhaps never more so than today in our highly technological society when knowledge has become so specialized—as manifested, for instance, in the frequent appearance of "expert witnesses" in courtrooms. When is an appeal to the opinion of an expert a reasonable type of argument to make, and when does it become a fallacy? This book provides a method for the evaluation of these appeals in everyday argumentation.Specialized domains of knowledge such as science, medicine, law, and government policy have gradually taken over as the basis on which many of our rational decisions are made daily. Consequently, appeal to expert opinion in these areas has become a powerful type of argument. Challenging an argument based on expert scientific opinion, for example, has become as difficult as it once was to question religious authority.Walton stresses that even in cases where expert opinion is divided, the effect of it can still be so powerful that it overwhelms an individual's ability to make a decision based on personal deliberation of what is right or wrong in a given situation. The book identifies the requirements that make an appeal to expert opinion a reasonable or unreasonable argument. Walton's new pragmatic approach analyzes that appeal as a distinctive form of argument, with an accompanying set of appropriate critical questions matching the form. Throughout the book, a historical survey of the key developments in the evolution of the argument from authority, dating from the time of the ancients, is given, and new light is shed on current problems of "junk science" and battles between experts in legal argumentation.

Product Description: Appeal to pity has frequently been exploited with amazing success as a deceptive tactic of argumentation, so much so that it has traditionally been treated as a fallacy. Using a case study method, the author examines examples of appeals to pity and compassion in real arguments in order to classify, analyze, and evaluate the types of arguments used in these appeals...read more (view table of contents, read Amazon.com's description)

Product Description: Recent concerns with the evaluation of argumentation in informal logic and speech communication center around nondemonstrative arguments that lead to tentative or defeasible conclusions based on a balance of considerations. Such arguments do not appear to have structures of the kind traditionally identified with deductive and inductive reasoning, but are extremely common and are often called "plausible" or "presumptive," meaning that they are only provisionally acceptable even when they are correct...read more

Product Description: Arguments from Ignorance explores the situations in which the argument from ignorance (also known as the lack-of-knowledge inference, negative evidence, or default reasoning) functions as a respectable form of reasoning and those in which it is indeed fallacious...read more

This book develops a logical analysis of dialogue in which two or more parties attempt to advance their own interests. It includes a classification of the major types of dialogues and a discussion of several important informal fallacies. The authors define the concept of commitment in a way that makes it useful in evaluating arguments. In traditional logic, a proposition is either true or false, and that is the end of it. In this new framework, an arguer can be held to his or her commitments in some cases, but in other cases, he or she can retract them without violating any rule of the dialogue. Commitment in Dialogue studies the conditions under which commitments should be held or may be retracted within an argument. An extensive case study of a discussion in medical ethics is used to bring together two traditions or schools of thought that had not been integrated previously--the rigorous Lorenzen school of formal logic, and the more permissive Hamblin-style dialogue. It introduces these methods of evaluation and offers guidelines for analyzing the text of discourse. The book could be used in both intermediate and advanced courses in informal logic, argumentation, and critical thinking, but it is accessible to the reader with no background in these fields as well. Each chapter is summarized, and additional problems to be solved are presented.

guishing it from a quarrel which is contentious outlines the concept of an argument in normal dialogue as a collaborative tool that can be used well or poorly to reach an agreement or understanding. Drawing on recent insights in speech communication, rhetoric, artificial intelligence, informal . (Publisher)

Product Description: Appeals to emotion -- pity, fear, popular sentiment, and ad hominem attacks -- are commony used in argumentation. Instead of dismissing these appeals as fallacious wherever they occur, as many do, Walton urges that each use be judged on its merits...read more

Product Description: A "slippery slope argument" is a type of argument in which a first step is taken and a series of inextricable consequences follow, ultimately leading to a disastrous outcome. Many textbooks on informal logic and critical thinking treat the slippery slope argument as a fallacy...read more

Product Description: This book offers a new theory of begging the question as an informal fallacy, within a pragmatic framework of reasoned dialogue as a normative theory of critical argumentation. The fallacy of begging the question is analyzed as a systematic tactic to evade fulfillment of a legitimate burden of proof by the proponent of an argument...read more (view table of contents, read Amazon.com's description)

Product Description: This book is an analysis of the distinctive form of reasoning, called practical reasoning by Aristotle (as opposed to theoretical reasoning), that serves to guide behaviour. It is a contribution to the literature on practical reasoning and indirectly on its application to action theory...read more

Product Description: Walton's book is a study of several fallacies in informal logic. Focusing on question-answer dialogues, and committed to a pragmatic rather than a semantic approach, he attempts to generate criteria for evaluating good and bad questions and answers...read more (view table of contents, read Amazon.com's description)

This is an introductory guide to the basic principles of constructing good arguments and criticizing bad ones. It is nontechnical in its approach, and is based on 150 key examples, each discussed and evaluated in clear, illustrative detail. The author explains how errors, fallacies, and other key failures of argument occur. He shows how correct uses of argument are based on sound argument strategies for reasoned persuasion and critical questions for responding. Among the many subjects covered are: techniques of posing, replying to, and criticizing questions, forms of valid argument, relevance, appeals to emotion, personal attack, uses and abuses of expert opinion, problems in deploying statistics, loaded terms, equivocation, and arguments from analogy. (view table of contents)

(view table of contents)

Product Description: Published January 1st 1986 by University of California Press.

Product Description: Walton offers a comprehensive, flexible model for physician-patient decision making, the first such tool designed to be applied at the level of each particular case. Based on Aristotelian practical reasoning, it develops a method of reasonable dialogue, a question- and-answer process of interaction leading to informed consent on the part of the patient, and to a decision--mutually arrived at--reflecting both high medical standards and the patient's felt needs...read more

Product Description: Douglas N. Walton considers the question of whether the conventions of informal conversation can be articulated more precisely than they are at present. Specifically, he addresses the problem of the fallacy of ad hominem argumentation as it occurs in natural settings...read more