Legal Argumentation

Researchers face perennial difficulties in studying live jury deliberation. As a result, the academic community struggles to reach a consensus on key matters of legal reform concerning jury trials. The hurdles faced by empirical jury researchers are often legal or institutional. This note argues that the legal and institutional barriers preventing live deliberation research should be removed and discusses two forms that live deliberation research could take.

dialectical frameworks have been introduced as a formalism for modeling argumentation allowing general logical satisfaction conditions and the relevant argument evaluation. Different criteria used to settle the acceptance of arguments are called semantics. Semantics of ADFs have so far mainly been defined based on the concept of admissibility. However, the notion of strongly admissible semantics studied for abstract argumentation frameworks has not yet been introduced for ADFs. In the current work we present the concept of strong admissibility of interpretations for (...) ADFs. Further, we show that strongly admissible interpretations of ADFs form a lattice with the grounded interpretation as the maximal element. We also present algorithms to answer the following decision problems: whether a given interpretation is a strongly admissible interpretation of a given ADF, and whether a given argument is strongly acceptable/deniable in a given interpretation of a given ADF. In addition, we show that the strongly admissible semantics of ADFs forms a proper generalization of the strongly admissible semantics of AFs. (shrink)

This paper proposes an argumentation-based procedure for legal interpretation, by reinterpreting the traditional canons of textual interpretation in terms of argumentation schemes, which are then classified, formalized, and represented through argument visualization and evaluation tools. The problem of statutory interpretation is framed as one of weighing contested interpretations as pro and con arguments. The paper builds an interpretation procedure by formulating a set of argumentation schemes that can be used to comparatively evaluate the types of arguments used in cases of (...) contested statutory interpretation in law. A simplified version of the Carneades Argumentation System is applied in a case analysis showing how the procedure works. A logical model for statutory interpretation is finally presented, covering pro-tanto and all-things-considered interpretive conclusions. -/- . (shrink)

Statutory interpretation involves the reconstruction of the meaning of a legal statement when it cannot be considered as accepted or granted. This phenomenon needs to be considered not only from the legal and linguistic perspective, but also from the argumentative one - which focuses on the strategies for defending a controversial or doubtful viewpoint. This book draws upon linguistics, legal theory, computing, and dialectics to present an argumentation-based approach to statutory interpretation. By translating and summarizing the existing legal interpretative canons (...) into eleven patterns of natural arguments - called argumentation schemes - the authors offer a system of argumentation strategies for developing, defending, assessing, and attacking an interpretation. Illustrated through major cases from both common and civil law, this methodology is summarized in diagrams and maps for application to computer sciences. These visuals help make the structures, strategies, and vulnerabilities of legal reasoning accessible to both legal professionals and laypeople. (shrink)

The primary aim of this chapter is to explain the nature of evidential reasoning, the characteristic difficulties encountered, and the tools to address these difficulties. Our focus is on evidential reasoning in criminal cases. There is an extensive scholarly literature on these topics, and it is a secondary aim of the chapter to provide readers the means to find their way in historical and ongoing debates.

The purpose of this paper is to analyze the structure and the defeasibility conditions of argument from analogy, addressing the issues of determining the nature of the comparison underlying the analogy and the types of inferences justifying the conclusion. In the dialectical tradition, different forms of similarity were distinguished and related to the possible inferences that can be drawn from them. The kinds of similarity can be divided into four categories, depending on whether they represent fundamental semantic features of the (...) terms of the comparison or non-semantic ones, indicating possible characteristics of the referents. Such distinct types of similarity characterize different kinds of analogical arguments, all based on a similar general structure, in which a common genus is abstracted. Depending on the nature of the abstracted common feature, different rules of inference will apply, guaranteeing the attribution of the analogical predicate to the genus and to the primary subject. This analysis of similarity and the relationship thereof with the rules of inference allows a deeper investigation of the defeasibility conditions. (shrink)

Argument from analogy is a common and formidable form of reasoning in law and in everyday conversation. Although there is substantial literature on the subject, according to a recent survey ( Juthe 2005) there is little fundamental agreement on what form the argument should take, or on how it should be evaluated. Th e lack of conformity, no doubt, stems from the complexity and multiplicity of forms taken by arguments that fall under the umbrella of analogical reasoning in argumentation, dialectical (...) studies, and law. Modeling arguments with argumentation schemes has proven useful in attempts to refine the analyst’s understanding of not only the logical structures that shape the backbone of the argument itself, but also the logical underpinning of strategies for evaluating it, strategies based on the semantic categories of genus and relevance. By clarifying the distinction between argument from example and argument from analogy, it is possible to advance a useful proposal for the treatment of argument from analogy in law. (shrink)

Purpose: Illicit financial flows are targeted by the United Nations’ (UN) Sustainable Development Goals (SDGs). However, these illicit flows are not entirely understood. Furthermore, they can benefit from economic norms, laws, and regulations that lack mechanisms to detect and penalize them. This paper investigates whether a recent test, the embezzler test, can be used to identify regulatory architectures that facilitate illicit financial flows and related financial crimes. -/- Design/methodology/approach: To develop a more advanced version of the embezzler test in terms (...) of definitions and practical implementation methodology. -/- Findings: In this test, the definition of embezzlement can be understood to be the occurrence of illicit financial flows crossing the boundaries of organizations and/or countries. This is a multi-stage test, which intentionally simulates illicit financial flows to observe how well equipped is the regulatory architecture to deal with other financial offences that are related with these flows, such as theft, money laundering, fraud, corruption, market manipulation, and tax evasion. -/- Originality: This is the first explicit test that has been presented to identify norms, laws, and regulations that facilitate illicit financial flows and related financial crimes. -/- Research implications: Future research can employ the version of this test to stress test a large range of economic norms, laws, and regulations. -/- Practical/Social implications: This test’s new version can assist achieve the UN SDGs’ illicit financial flow reduction target. Furthermore, it can be used to study both existing and proposed norms, laws, and regulation. (shrink)

Many jurisdictions prohibit or severely restrict the use of evidence about a defendant’s character to prove legal culpability. Situationists, who argue that conduct is largely determined by situational features rather than by character, can easily defend this prohibition. According to situationism, character evidence is misleading or paltry. -/- Proscriptions on character evidence seem harder to justify, however, on virtue ethical accounts. It appears that excluding character evidence either denies the centrality of character for explaining conduct—the situationist position—or omits probative evidence. (...) Situationism is, after all, presented as antithetical to virtue ethics. -/- This essay provides a virtue ethical defense of character evidence exclusion rules. We show that existing virtue ethical rebuttals to situationism themselves support prohibitions on character evidence; even if behavior arises from stable character traits, character evidence should be prohibited. In building our case, we provide a taxonomy of kinds of character judgment and reconcile the ubiquity and reasonableness of character judgments in ordinary life with the epistemic legitimacy of character evidence prohibitions in law. (shrink)

Reasoning by default is a relevant aspect of everyday life that has traditionally attracted the attention of many fields of research, from psychology to the philosophy of logic, from economics to artificial intelligence. Also in the field of law, default reasoning is widely used by lawyers, judges and other legal decision-makers. In this paper, a philosopher of language (Carlo Penco) and a philosopher of law (Damiano Canale) attempt to explore some uses of default reasoning that are scarcely considered by legal (...) theory. In particular, the dialogue dwells on the notion of literal meaning, witness testimony, and the problem of disagreement among experts in legal proceedings. The paper is intended as a sort of brain storming useful to identify new lines of research straddling philosophy of law, cognitive psychology and philosophy of language. (shrink)

The standard model of precedential constraint holds that a court is equally free to modify a precedent of its own and a precedent of a superior court—overruling aside, it does not differentiate horizontal and vertical precedents. This paper shows that no model can capture the U.S. doctrine of precedent without making that distinction. A precise model is then developed that does just that. This requires situating precedent cases in a formal representation of a hierarchical legal structure, and adjusting the constraint (...) that a precedent imposes based on the relationship of the precedent court and the instant court. The paper closes with suggestions for further improvements of the model. (shrink)

Jury science is fraught with difficulty. Since legal and institutional hurdles render it all but impossible to study live criminal jury deliberation, researchers make use of various indirect methods to evaluate jury performance. But each of these methods are open to methodological criticism and, strikingly, some of the highest-profile jury research programmes in recent years have reached opposing conclusions. Uncertainty about jury performance is an obstacle for legal reform—ongoing debates about the ‘justice gap’ for complainants of sexual offences has rendered (...) these problems stark. This paper proposes a way to advance the debate. (shrink)

A partir de los postulados de una concepción semántica de norma y su clasificación en reglas y principios, Robert Alexy ha enunciado una tesis fuerte de la separación, al concebir que entre ambos tipos de normas no solo existe una diferencia gradual, sino también cualitativa. En este contexto, los principios son descritos como mandatos de optimización, caracterizados por un cumplimiento gradual en atención a las posibilidades reales y jurídicas, y a través de la denominada técnica de la ponderación. A pesar (...) de las objeciones recibidas, la vigencia de esta tesis resulta incuestionable, sirviendo todavía de inspiración a las nuevas generaciones de juristas interesados en la Teoría del Derecho. En el presente capítulo se pretende exponer de manera sucinta pero precisa los postulados del principialismo alexyano, las críticas más recurrentes y sus posibles respuestas, para terminar con algunas notas interpretativas que persiguen contribuir a la continuación del camino trazado por el insigne profesor alemán. (shrink)

STRESZCZENIE Opracowanie zmierza do udzielenia odpowiedzi na pytanie, czym – z punktu widzenia struktury procesu wykładni i struktury wchodzących w grę wartości konstytucyjnych – różni się ograniczanie wolności i praw w ramach stosowania „zwykłych środków konstytucyjnych”, od ograniczania wolności i praw dopuszczalnego w stanach nadzwyczajnych. Podjęta zostaje problematyka dotyczącą kwestii materialnych, a poza zakresem rozważanych zagadnień pozostają kwestie dotyczące formalnych warunków dopuszczalności ograniczeń, jak publiczne ogłoszenie zagrożenia czy możliwość wprowadzania ograniczeń w aktach podustawowych. Stawiane tezy są polemiczne wobec poglądów, że (...) zawieszenie wolności lub praw jest skrajnym typem ograniczania i następuje wtedy, gdy wolności czy prawa „już nie ma”, lub że zawieszenie zakłada ograniczenie istoty wolności lub prawa. Okazuje się, że można sensownie mówić o zawieszaniu wolności lub praw także wówczas, gdy są one ograniczane w niewielkim tylko stopniu. Ponadto, możliwe jest zawieszanie, które nie prowadzi do ograniczenia istoty wolności lub prawa. Argumentuje się, że istotą zawieszania wolności lub praw w stanach nadzwyczajnych jest zakwestionowanie podstawowego ich przymiotu, jakim jest – uznawana w prawie międzynarodowym – nienaruszalność „całych” poszczególnych praw człowieka, która jest czymś innym od nienaruszalności ich istoty. Przy okazji prowadzona jest refleksja teoretycznoprawna nad zagadnieniem zawieszania wolności lub praw. Zawieszenie okazuje się czymś istotnie różnym od czasowej utraty mocy obowiązującej przepisów dotyczących wolności czy praw. Ich ciągłe obowiązywanie znajduje wyraz, na przykład, w zasadzie proporcjonalności mającej zastosowanie do zawieszanych wolności lub praw. -/- Extraordinary Measures and Restrictions of Constitutional Freedoms and Rights ABSTRACT The study aims to answer the question on the difference between limitation of freedoms and rights in ordinary situations and their suspension (derogation) when extraordinary measures are introduced. This question is considered from the point of view of the structure of the interpretation process and the structure of the constitutional values. Consideration is given to issues relating to material aspects. However, issues relating to formal conditions for the admissibility of restrictions, such as public announcement of a threat or the possibility of introducing restrictions in sub-statutory acts, are not examined. The theses put forward are critical of the view that suspension of freedoms or rights is an extreme type of limitation and a freedom or a right "is no longer there", and of the view that suspension presupposes violation of the essence of freedom or right. It can be argued that it makes sense to talk about the suspension of freedoms or rights also when they are only slightly restricted. Moreover, it is possible to suspend a freedom or a right without violating their essence. It is argued that suspension of freedoms or rights leads to questioning of their basic characteristic that is their inviolability as recognized in international law. However, this inviolability of freedoms or rights is something different from the inviolability of their essence. In terms of the theory of law, the suspension of freedoms or rights turns out to be something significantly different from the temporary loss of the binding force of the respective provisions. Their continued validity is reflected, for example, in the application of the principle of proportionality to the suspended freedoms or rights. (shrink)

En la Constitución de la República de Polonia del 2 de abril de 19971 se reconocía el carácter objetivo de ciertos valores y un cognoscitivismo axiológico. Si tomamos las disposiciones constitucionales en serio tenemos que aceptar que algunas valoraciones morales o que algunas proferencias [utterances] valorativas pueden ser verdaderas o falsas y que nos informan acerca de una realidad objetiva. Por otro lado, en la teoría del derecho polaca y en los cursos universitarios de lógica para abogados se encuentran definiciones (...) de la justificación axiológica de las normas y de normas axiológicas (normas que poseen una justificación axiológica) que presuponen que ningún valor es objetivo y que no pueden ser conocidos — se presupone un no-cognoscitivismo axiológico. De acuerdo con el no-cognoscitivismo, ninguna valoración y ninguna proferencia valorativa puede ser verdadera o falsa, ni puede informar acerca de la realidad. En este trabajo se analiza la concepción no-cognoscitivista de Zygmunt Ziembiński tal y como ha sido formulada en su libro de texto lógica práctica [Logika praktyczna] — el cual ha formado intelecTraduddo del inglés por Jorge Cerdio; título original: «True Norms in the Light of Axiological Justification of Norms». Relectura: Germán Sucar. La Constitución de la República de Polonia [Konstytucja Rzeczypospolitej Polskiej] del 2 de abril de 1997, Dziennik Ustaw, 1997. No. 78, item 483. Versión en inglés en Gierach, 2009: 21. 6S6 Mark Piechowiak tualmente a dos generaciones de abogados polacos y ha establecido el estándar bajo el que se entienden las justificaciones axiológicas y las normas axiológicas2. Su definición de valoración y de normas excluyen la posibilidad misma de un discurso significativo acerca de las valoraciones o acerca de las normas en términos de verdad o falsedad. (shrink)

One of the challenges related to the discursive practices of argumentative agents is to get to know if those interactions have an institutional effect. In this article, it is argued that in the new institutionalism, theoretical approaches and deterministic analysis are outlined to investigate argumentative practices that take place in processes of legitimation and recognition. Here a double socio-institutional and discursive or constructivist approach to the argumentation theory is defended, and it is argued that this perspective could be extended to (...) a research program aimed at interpreting argumentative processes in the public sphere that act as calculation mechanism and conformation of social capital. (shrink)