In this paper, I contend that evidence-focused strategies of science communication may be complemented by possibly more effective rhetorical arguments in current public debates on vaccines. I analyse the case of direct science communication - that is, communication of evidence - and show that it is difficult to effectively communicate evidential standards of science in the presence of well-equipped anti-science movements. Instead, I argue that effective rhetorical tools involve ad hominem strategies, that is, arguments involving claims of (...) expertise. I provide a rationale, and sketch a methodology, for using ad hominem arguments in science communication. (shrink)

Walton gives a clear method for analyzing and evaluating cases of ad hominem arguments found in everyday argumentation.

Ad hominem arguments argue that some opponent should not be heard and no argument of that opponent should be heard or considered. The opponent has generally pernicious views, false and harmful. Moreover he is diabolically clever at arguing for his views. Thus, the ad hominem argument is essentially a device by which non-intellectuals try to wrest control of a dialectical situation from intellectuals. Stifling intellectuals, disrupting the dialectical situation, is an unpleasant conclusion, but no fallacy has been (...) shown in what leads up to that conclusion. (shrink)

Abstract Jeffrey Koperski claims in Zygon (2008) that critics of Intelligent Design engage in fallacious ad hominem attacks on ID proponents and that this is a “bad way” to engage them. I show that Koperski has made several errors in his evaluation of the ID critics. He does not distinguish legitimate, relevant ad hominem arguments from fallacious ad hominem attacks. He conflates (or equates) the logical use of valid with the colloquial use of valid. Moreover, Koperski (...) doesn't take seriously the legitimate concerns of the ID critics, and in doing so, commits the straw man fallacy. In the end, I show that no one disagrees with the criticism of improper use of fallacies as methods of evaluation. But what constitutes proper, relevant evaluation of the ID theorists and their motivation is a matter of dispute. And sometimes attacking a person as a method of evaluation is justified, and thus is not fallacious. The definition of ad hominem arguments as either a “good way” or a “bad way” rests on justification, which I argue ID opponents have. The basis for these good objections relies on the motivation many Christians have to share their faith with non-Christians, which they call the “great commission.”. (shrink)

ABSTRACTThis paper responds to two issues in interpreting George Berkeley’s Analyst. First, it explains why the text contains no discussion of religious mysteries or points of faith, despite the claims of the text's subtitle; I argue that the subtitle must be understood, and its success assessed, in conjunction with material external to the text. Second, it’s unclear how naturally the arguments of the Analyst sit with Berkeley’s broader views. He criticizes the methodology of calculus and conceptually problematic entities, and (...) the extent to which they require one to bend the rules of classical mathematics. Yet, elsewhere, Berkeley’s opinion of classical mathematics and its intelligibility is low, and he defends a pragmatic approach to word meaning that should not find fault with so functionally successful a theory. The ad hominem intention of the text makes it difficult to discern to what extent Berkeley is committed to the sincerity of these criticisms. This component of the text is rarely discussed, but I argue that when trying to decide what Berkeley’s true position is in the Analyst, we should treat its ad hominem component as its primary intention. (shrink)

This paper is ultimately about the nature of argumentation in general and about the nature of practical argumentation in particular. (Practical argumentation is the form of argumentation which aims at answering the question: ‘What is to be done?’) The approach adopted here is an indirect one. I analyze one traditional form of argumentive fallacyargumentum ad hominem and try to show that in some argumentative situations it is an intuitively legitimate move. These intuitions can be explained if we accept that (...) practical argumentation is also governed by the general rules of practical rationality. (shrink)

This is a critical examination of Johnstone's thesis that all valid philosophical arguments are ad hominem. I clarify his notions of valid, philosophical, and ad hominem. I illustrate the thesis with his refutation ofthe claim that only ordinary language is correct. r discuss his three supporting arguments (historical, theoretical, and intermediate). And r criticize the thesis with the objections that if an ad hominem argument is valid, it is really ad rem; that it's unclear how (...) his own theoretical argument can be ad hominem; that if an ad hominem argument is really valid, it would have to be based on the proponent's own assumptions; and that the thesis is not true of philosophical arguments that are constructive rather than critical. (shrink)

Perelman’s view of the role of persons in argument is one of the most distinctive features of his break with Cartesian assumptions about reasoning. Whereas the rationalist paradigm sought to minimize or eliminate personal considerations by dismissing them as distracting and irrelevant, Perelman insists that argumentation inevitably does and ought to place stress on the specific persons engaged in an argument and that the relationship between speaker and what is spoken is always relevant and important. In taking this position, Perelman (...) implicitly revives the classical conception of proof by character (ethos or “ethotic” argument), but despite an extended discussion of act and person in argument, The New Rhetoric does not give much consideration to the classical concept and confuses differing approaches to it within the tradition. The result is that Perelman treats the role of the speaker in argument only by reference to abstract techniques and does not recognize the importance of examining particular cases in order to thicken understanding of how ethotic argument works in the complex, situated context of its actual use. Consequently, Perelman’s account of the role of persons in argument should be supplement by reference to case studies, and to that end, I consider ethotic argument in W.E.B. Du Bois’ famous essay “Of Mr. Booker T. Washington and Others”. (shrink)

This article outlines criteria for the evaluation of the argumentum ad hominem (argument against the person, or personal attack in argument) that is traditionally a part of the curriculum in informal logic. The argument is shown to be a kind of criticism which works by shifting the burden of proof in dialogue through citing a pragmatic inconsistency in an arguer's position. Several specific cases of ad hominem argumentation which pose interesting problems in analyzing this type of criticism are (...) studied. (shrink)

The recent literature on ad hominem argument contends that the speaker’s character is sometimes relevant to evaluating what she says. This effort to redeem ad hominems requires an analysis of character that explains why and how character is relevant. I argue that virtue epistemology supplies this analysis. Three sorts of ad hominems that attack the speaker’s intellectual character are legitimate. They attack a speaker’s: (1) possession of reliabilist vices; or (2) possession of responsibilist vices; or (3) failure to perform (...) intellectually virtuous acts. Legitimate ad hominems conclude that we should not believe what a speaker says solely on her say-so. (shrink)

A healthy and robust public political culture is generally regarded as being of utmost necessity for the maintenance of a stable democratic environment. Especially when a country is facing significant challenges and is in the process of devising and implementing radical reforms, the presence of satisfactory collective deliberation can ensure durability and stability. This article will focus on one type of argumentation that stands in the way of such healthy deliberation. It will explore the various forms that ad hominem (...) arguments take and consider the harmful consequences of their wide prominence in the political culture of the country. (shrink)

Argumentation theorists are beginning to think of ad hominem arguments as generally legitimate. Virtue argumentation theorists argue that a character trait approach to argument appraisal can explain why ad hominems would are legitimate, when they are legitimate. But I argue that we do not need to appeal to virtue argumentation theory to explain the legitimacy of ad hominem arguments; a more straightforward evidentialist approach to argument appraisal is also committed to their legitimacy. I also argue that (...) virtue argumentation theory faces some important problems, and that whereas the virtue-theoretic approach in epistemology is well-motivated, that motivation does not carry over to virtue argumentation theory. (shrink)

Fichte's narrative persona in the Science of Knowledge is obnoxious. I try to disentangle regrettable signs of immaturity and paranoia from justifiable ad hominem arguments. Many of Fichte's ad hominem attacks on metaphysical realists are justified by his metaphysics and epistemology. We cannot criticize an important class of these arguments unless we criticize his epistemology and metaphysics. They are not matters of "style" separable from "substance". I show this inseparability, and point out a few inconsistencies, but (...) otherwise do not comment on Fichte's "substance". (shrink)

In this paper, I argue that ad hominem arguments are not always fallacious. More explicitly, in certain cases of practical reasoning, the circumstances of a person are relevant to whether or not the conclusion should be accepted. This occurs, I suggest, when a person gives advice to others or prescribes certain courses of action but fails to follow her own advice or act in accordance with her own prescriptions. This is not an instance of a fallacious tu quoque (...) provided that such circumstantial ad hominem arguments are construed as rebuttals to appeals (administrative) authority (of expertise), or so I argue. (shrink)

In this paper, I discuss the current thesis on the modern origin of the ad hominem-argument, by analysing the Aristotelian conception of it. In view of the recent accounts which consider it a relative argument, i.e., acceptable only by the particular respondent, I maintain that there are two Aristotelian versions of the ad hominem, that have identifiable characteristics, and both correspond to the standard variants distinguished in the contemporary treatments of the famous informal fallacy: the abusive and the (...) circumstancial or tu quoque types. I propose to reconstruct the two Aristotelian versions (see sections 1 and 2), which have been recognized again in the ninteenth century (sec. 3). Finally, I examine whether or not it was considered as a fallacious dialogue device by Aristotle and by A. Schopenhauer (sec. 4). (shrink)

There are two views of the ad hominem argument found in the textbooks and other traditional treatments of this argument, the Lockean or ex concessis view and the view of ad hominem as personal attack. This article addresses problems posed by this ambiguity. In particular, it discusses the problem of whether Aristotle's description of the ex concessis type of argument should count as evidence that he had identified the circumstantial ad hominem argument. Argumentation schemes are used as (...) the basis for drawing a distinction between this latter form of argument and another called argument from commitment, corresponding to the ex concessis argument. (shrink)

This chapter deals with one of the common fallacies in Western philosophy, ad hominem: circumstantial. The circumstantial variety of the ad hominem argument is distinct from the direct form in that instead of directly attacking the character of the arguer, one draws attention to an inconsistency in the personal circumstances of the proponent (his/her commitments) and the content of his/her argument/position as a way to question his/her sincerity or credibility. As with all the ad hominem argument forms, (...) the ad hominem: circumstantial has both fallacious and legitimate uses. Fallacious uses of the ad hominem argument type are pernicious, in part, because of how difficult it can be to respond to them in an effective way. One of the main issues with ad hominem arguments is telling which are fallacious and which are not. (shrink)

Christopher Johnson has put forward in this journal the view that ad hominem reasoning may be more generally reasonable than is allowed by writers such as myself, basing his view on virtue epistemology. I review his account, as well as the standard account, of ad hominem reasoning, and show how the standard account would handle the cases he sketches in defense of his own view. I then give four criticisms of his view generally: the problems of virtue conflict, (...) vagueness, conflation of speech acts, and self-defeating counsel. I then discuss four reasons why the standard account is superior: it better fits legal reality, the account of other fallacies, psychological science, and political reality. (shrink)

This chapter focuses on one of the common fallacies in Western philosophy, ad hominem: direct. An ad hominem argument is an argument “to”, “toward”, or “against” the person. As with all of the ad hominem argument subtypes, the ad hominem: direct occurs in the context of some kind of dialogue or exchange, real or imagined. That is, an ad hominem occurs in response (the respondent) to the stated argument/position of another person. Instead of addressing the (...) argument/position of the proponent, the respondent addresses the proponent's character in such a way that his credibility is questioned in order to either question or refute his argument/position. The central complication when dealing with the ad hominem: direct is that while ad hominem arguments are often fallacious, they are also often legitimate. Fallacious uses of the ad hominem argument type are pernicious, in part, because of how difficult it can be to respond to them in an effective way. (shrink)

This paper combines methods of argumentation theory and artificial intelligence to extend existing work on the dialectical structure of crossexamination. The existing method used conflict diagrams to search for inconsistent statements in the testimony of a witness. This paper extends the method by using the inconsistency of commitments to draw an inference by the ad hominem argumentation scheme to the conclusion that the testimony is unreliable because of the bad ethical character for veracity of the witness.

An ad hominem fallacy is committed when an individual employs an irrelevant personal attack against an opponent instead of addressing that opponent’s argument. Many discussions of such fallacies discuss judgments of relevance about such personal attacks, and consider how we might distinguish those that are relevant from those that are not. This paper will argue that the literature on bias and testimony can helpfully contribute to that analysis. This will highlight ways in which biases, particularly unconscious biases, can make (...) ad hominem fallacies seem effective, even when the irrelevance is recognized. (shrink)

This chapter deals with one of the common fallacies in Western philosophy: ad hominem: tu quoque. An ad hominem: tu quoque argument is often seen in political debate. As Walton stresses: “The primary case of the tu quoque type of ad hominem retort occurs when an ad hominem reply is used to respond to an ad hominem attack”. As with all the ad hominem argument forms, the ad hominem: tu quoque has both fallacious (...) and legitimate uses. Fallacious uses of the ad hominem argument type are pernicious, in part, because of how difficult it can be to respond to them in an effective way. One of the main issues with ad hominem arguments is telling which are fallacious and which are not. The chapter looks at some examples to illustrate the use of proponent's ad hominem, and respondent's ad hominem. (shrink)

This chapter deals with one of the common fallacies in Western philosophy called ad hominem: bias. The ad hominem argument form is one way of engaging another's character. It is the direct or indirect impugning of a person's character that unites the various forms of the ad hominem argument. Many textbook accounts of the ad hominem argument are much too cavalier in their approach, often treating the ad hominem argument form as usually/always fallacious. As with (...) all the ad hominem argument forms, the ad hominem: bias has both fallacious and legitimate uses. Fallacious uses of the ad hominem argument type are pernicious, in part, because of how difficult it can be to respond to them in an effective way. The chapter looks at some examples to illustrate the use of proponent's purported bias relevant to the argument/position. (shrink)

El objetivo de este artículo es ofrecer una explicación de la legitimidad de ciertos argumentos ad hominem acudiendo a la epistemología de las virtudes. La tesis central es que hay argumentos ad hominem que son aceptables si se conciben como argumentos inductivos cuya fuerza está determinada por una apelación justa a los vicios epistémicos del interlocutor. Se argumenta que algunos argumentos ad hominem abusivos son aceptables si descansan en un señalamiento justo de la carencia de virtudes epistémicas (...) confiabilistas por parte del interlocutor. Así mismo, algunos argumentos ad hominem circunstanciales serían aceptables si descansan en un señalamiento justo de la carencia de virtudes responabilistas por parte del interlocutor. El artículo también expone cómo otros intentos de reivindicación de los argumentos ad hominem adolecen de algunos problemas. (shrink)

Bayesian probability has recently been proposed as a normative theory of argumentation. In this article, we provide a Bayesian formalisation of the ad Hitlerum argument, as a special case of the ad hominem argument. Across three experiments, we demonstrate that people's evaluation of the argument is sensitive to probabilistic factors deemed relevant on a Bayesian formalisation. Moreover, we provide the first parameter-free quantitative evidence in favour of the Bayesian approach to argumentation. Quantitative Bayesian prescriptions were derived from participants' stated (...) subjective probabilities (Experiments 1 and 2), as well as from frequency information explicitly provided in the experiment (Experiment 3). Participants' stated evaluations of the convincingness of the argument were well matched to these prescriptions. (shrink)

This article explores the modalities by which referring to past discursive performance of adversaries within a continuous polemical exchange is used in ad hominem attacks. Our starting point holds that in the context of lengthy debates, participants and third-party listeners share a rhetorical memory, which, dynamic and subjective as it may be, allows for the evaluation of participants’ characters based on their perceived discursive performances. By analysing opinion articles related to the Israeli political debate, this study shows how drawing (...) inference from adversaries’ prior statements and conduct is used to compromise their credibility as participants in the polemical exchange. It is found that, alongside supporting arguments from inconsistent commitment, previous discursive performance is mobilized to discredit speakers’ epistemic authority and their moral legitimacy. (shrink)

Ad hominem arguments are generally dismissed on the grounds that they are not attempts to engage in rational discourse, but are rather aimed at undermining argument by diverting attention from claims made to assessments of character of persons making claims. The manner of this dismissal however is based upon an unlikely paradigm of rationality: it is based upon the presumption that our intellectual capacities are not as limited as in fact they are, and do not vary as much (...) as they do between rational people. When we understand rationality in terms of intellectual virtues, however, which recognize these limitations and provide for the complexity of our thinking, ad hominem considerations can sometimes be relevant to assessing arguments. (shrink)

Many of us read Peter Singer ’ s work on our obligations to those in desperate need with our students. Famously, Singer argues that we have a moral obligation to give a significant portion of our assets to famine relief. If my own experience is not atypical, it is quite common for students, upon grasping the implications of Singer ’ s argument, to ask whether Singer gives to famine relief. In response it might be tempting to remind students of the (...) ad hominem fallacy of attacking the person advancing an argument rather than the argument itself. In this paper I argue that the “ ad hominem reply ” to students ’ request for information about Singer is misguided. First I show that biographical facts about the person advancing an argument can constitute indirect evidence for the soundness / unsoundness of the argument. Second, I argue that such facts are relevant because they may reveal that one can discard the argument without thereby incurring moral responsibility for failing to act on its conclusion even if the argument is sound. (shrink)

Ad hominem arguments are generally dismissed on the grounds that they are not attempts to engage in rational discourse, but are rather aimed at undermining argument by diverting attention from claims made to assessments of character of persons making claims. The manner of this dismissal however is based upon an unlikely paradigm of rationality: it is based upon the presumption that our intellectual capacities are not as limited as in fact they are, and do not vary as much (...) as they do between rational people. When we understand rationality in terms of intellectual virtues, however, which recognize these limitations and provide for the complexity of our thinking, ad hominem considerations can sometimes be relevant to assessing arguments. (shrink)

In lieu of an abstract, here is a brief excerpt of the content:Philosophy and Rhetoric 33.2 (2000) 101-115 [Access article in PDF] Case Study of the Use of a Circumstantial Ad Hominem in Political Argumentation Douglas Walton In the 1860s, Northern newspapers attacked Lincoln's policies by attacking his character, using the terms drunk, baboon, too slow, foolish, and dishonest. Steadily on the increase in political argumentation since then, the argumentum ad hominem has been carefully refined as an instrument (...) of "oppo tactics" and "going negative" by the public relations experts who now craft political campaigns at the national level. It has been so prominently used in the major political campaigns, debates, and advertisements of the past few years that there has even been a reaction against it--a feeling that we have gone too far in this direction and that some kind of restraint is needed. 1 But there has been no evidence of such restraint in the argumentation used in recent campaigns. Perhaps what might be helpful is a better understanding on the part of voters and campaigners of how to evaluate ad hominem arguments critically.How does the ad hominem argument really work as a way of molding public opinion, why is it so often so effective, and how can it be defended against? How can it be evaluated as a clearly identifiable type of argument, by some kind of objective standards, in a way that can be applied to particular cases? These appear to be tough questions, but recent research has made some not inconsiderable progress toward answering them.The purpose of this article is to present a new case study of a type of argument commonly used in political discourse, a case study that makes use of the dialectical normative framework for identifying and evaluating personal attack (ad hominem) arguments that is developed in a series of works by Henry W. Johnstone Jr. (1952); Alan Brinton (1985, 1995); Frans H. van Eemeren and Rob Grootendorst (1984, 1995); Erik C. W. Krabbe and Douglas N. Walton (1993), Walton (1989, chap. 6; 1998); and van Eemeren, Grootendorst, Francisca Snoeck Henkemans et al. (1996). This particular case, although typical of so many ad hominem arguments currently [End Page 101] in use in political discourse, has some special features that turn out to be quite interesting not only in showing how the dialectical framework applies to cases, but also in advancing our knowledge of how the ad hominem type of argument works in political argumentation in a democratic system for which the media reportage of events is a big factor in influencing voting. 1. Framework for analysis and evaluation Although the argumentum ad hominem, or personal attack argument, has been traditionally treated as a fallacy in logic, recent research in argumentation (as cited above) shows that, in many cases,--including cases in political argumentation--ad hominem arguments, as used in conversational arguments, are not fallacious. Research has shown that, while some personal attack arguments can definitely be judged fallacious, many others are quite reasonable (when evaluated in the appropriate context), while still others should be evaluated as weak (insufficiently supported) but not fallacious. As shown in this case study, the real function of an ad hominem argument (when properly used) is to attack an arguer's credibility in order to criticize the argument she advocates.Before going any further, it is necessary to define some terminology brought to use in the research cited above. An ad hominem argument is the use of personal attack in a dialogue exchange between two parties, where the one party attacks the character of the other party as bad, in some respect, and then uses this attack as a basis for criticizing the other party's argument. An argument is fallacious if it is a special baptizable (Johnson 1987) type of argument that is used by one party in a dialogue exchange in such a way that it blocks or interferes with the collaborative realization of the goal of the type of dialogue in which the two participants are supposed to be engaged (Walton 1995). Thus, there is a difference between a weak... (shrink)

The aim of the paper is to explore the interrelation between persuasion tactics and properties of speech acts. We investigate two types of arguments ad: ad hominem and ad baculum. We show that with both of these tactics, the structures that play a key role are not inferential, but rather ethotic, i.e., related to the speaker’s character and trust. We use the concepts of illocutionary force and constitutive conditions related to the character or status of the speaker in (...) order to explain the dynamics of these two techniques. In keeping with the research focus of the Polish School of Argumentation, we examine how the pragmatic and rhetorical aspects of the force of ad hominem and ad baculum arguments exploit trust in the speaker’s status to influence the audience’s cognition. (shrink)

The main finding of a comprehensive empirical research project on the intersubjective acceptability of the pragma-dialectical discussion rules (Van Eemeren, Garssen & Meuffels, 2009) is that ordinary language users judge discussion moves that are considered fallacious from an argumentation-theoretical perspective as unreasonable. In light of this finding it is remarkable that in everyday argumentative discourse fallacies occur regularly and seem many times not to be noticed by the participants in the discourse. This also goes for the abusive argumentum ad (...) class='Hi'>hominem. While abusive ad hominem attacks are judged to be very unreasonable discussion moves when the unreasonableness of clear cases of this fallacy is rated in experiments, in real life this fallacy remains undetected more often than not. In this paper it is argued that this paradox can be explained by analysing abusive ad hominem attacks as a mode of strategic manoeuvring which takes on a reasonable appearance in real life situations when it mimics, as it often does, legitimate critical reactions to authority argumentation. The hypothesis that abusive fallacies are seen as less unreasonable when they are presented as if they are critical questions pertaining to the argument scheme for authority argumentation than when they are clear cases was tested systematically in two experiments. The results of these experiments confirmed the hypothesis. (shrink)

The situationally disqualifying ad hominem attack is an argumentative move in critical dialogue whereby one participant points out certain features in his adversary's personal situation that are claimed to make it inappropriate for this adversary to take a particular point of view, to argue in a particular way, or to launch certain criticisms. In this paper, we discuss some examples of this way of arguing. Other types of ad hominem argumentation are discussed as well and compared with the (...) situationally disqualifying type. The socalled Houtlosser Dilemma highlights the danger of unconditionally condoning ad hominem arguments. We propose a classification of ad hominem, and a more restrictive use of the term 'circumstantial'. Finally, we discuss whether ad hominem arguments are (always?) to be rejected as fallacious. (shrink)