A presentation of current work that systematically explores and articulates the nature, origin and development of reasoning, this volume's primary aim is to describe and examine contemporary theory and research findings on the topic of deductive reasoning. Many contributors believe concepts such as "structure," "competence," and "mental logic" are necessary features for a complete understanding of reasoning. As the book emanates from a Jean Piaget Symposium, his theory of intellectual development as the standard contemporary treatment of deductive reasoning is used as the context in which the contributors elaborate on their own perceptions.

Introduces readers to the history of necessity and possibility, two modal concepts which play a key role in philosophy.

Kurt Mosser argues that reading Kant's Critique of Pure Reason as an argument for such a logic of experience makes more defensible many of Kant's most controversial claims, and makes more accessible Kant's notoriously difficult text.

This is a reissue of a book which is an exploration and defence of the notion of modality 'de re', the idea that objects have both essential and accidental properties. It is one of the first full-length studies of the modalities to emerge from the debate to which Saul Kripke, David Lewis, Ruth Marcus and others have contributed. The argument is developed by means of the notion of possible worlds, and ranges over key problems including the nature of essence, trans-world identity, negative existential propositions, and the existence of unactual objects in other possible worlds. In the final chapters Professor Plantinga applies his logical theories to the clarification of two problems in the philosophy of religion - the Problem of Evil and the Ontological Argument.

Originally published in 1993, this monograph addresses a central problem in Piaget’s work, which is the temporal construction of necessary knowledge. The main argument is that both normative and empirical issues are relevant to a minimally adequate account of the development of modal understanding. This central argument embodies three main claims. One claim is philosophical. Although the concepts of knowledge and necessity are problematic, there is sufficient agreement about their core elements due to the fundamental difference between truth-value and modality. Any account of human rationality has to respect this distinction. The second claim is that this normative distinction is not always respected in psychological research on the origins of knowledge where emphasis is placed on the procedures and methods used to gain good empirical evidence. An account of the initial acquisition of knowledge is not thereby an account of its legitimation in the human mind. The third claim relates to epistemology. Intellectual development is a process in which available knowledge is used in the construction of better knowledge. The monograph identifies features of a modal model of intellectual construction, whereby some form of necessary knowledge is always used. Intellectual development occurs as the reduction of modal errors through the differentiation and coordination of available forms of modal understanding. Piaget’s work continues to provide distinctive and intelligible answers to a substantive and outstanding problem.

Thinking of Necessity: A Kantian Account of Modal Thought and Modal Metaphysics sets out a Kant-inspired theory of modality, i.e., possibility and necessity. The theory is driven by a methodology which takes seriously questions about the function of modal judgment, i.e., the role or purpose of judgments of possibility and necessity, as a guide to a metaphysics of modality. Kant is a good example for how to develop this methodological approach since, for Kant, modal concepts play an important role in our capacity for thought and experience of the world. The book argues that we need logical modal concepts as a condition on our ability to think, and metaphysical modal concepts as a condition on our ability to think objectively, i.e., to think about the world. Concordant with this, it argues that logical necessity has its source in the laws of thought and that metaphysical necessity is relative to conditions on objective thought. This account of metaphysical necessity, which is termed "Modal Transcendentalism", is then further developed, covering questions concerning necessary and contingent existence, de re necessity, essentialism, and modal epistemology. The theory of modality developed in the book is inspired by aspects of Kant's writings on modality, but the development and defence of the theory is undertaken mostly independently of Kant.

This volume, which includes some previously published work and the most recent writings of the late Martin Braine and his colleagues, will be of interest to cognitive scientists, philosophers of mind and logicians, developmentalists, and psycholinguists.

There are currently several debates taking place simultaneously in various fields of psychology which address the same fundamental issue: to what extent are the processes and resources that underlie higher cognition domain-general versus domain-specific? Extreme Domain Specificity argues that people are effective thinkers only in contexts which they have directly experienced, or in which evolution has equipped them with effective solutions. The role of general cognitive abilities is ignored, or denied altogether. This book evaluates the evidence and arguments put forward in support of domain specific cognition, at the expense of domain generality. The contributions reflect a range of expertise, and present research into logical reasoning, problem solving, judgement and decision making, cognitive development, and intelligence. The contributors suggest that domain general processes are essential, and that domain specific processes cannot function without them. Rather than continuing to divide the mind’s function into ever more specific units, this book argues that psychologists should look for greater integration and for people’s general cognitive skills to be viewed as an integral part of their lives. Integrating the Mind will be valuable reading for students and researchers in psychology interested in the fields of cognition, cognitive development, intelligence and skilled behaviour.

This volume is a state-of-the-art survey of the psychology of reasoning, based around, and in tribute to, one of the field’s most eminent figures: Jonathan St B.T. Evans. In this collection of cutting edge research, Evans’ collaborators and colleagues review a wide range of important and developing areas of inquiry. These include biases in thinking, probabilistic and causal reasoning, people’s use of ‘if’ sentences in arguments, the dual-process theory of thought, and the nature of human rationality. These foundational issues are examined from various angles and finally integrated in a concluding panoramic chapter written by Evans himself. The eighteen chapters, all written by leading international researchers, combine state-of the-art research with investigation into the most fundamental questions surrounding human mental life, such as: What is the architecture of the human mind? Are humans rational, and what is the nature of this rationality? How do we think hypothetically? The Science of Reason offers a unique combination of breadth, depth and integrative vision, making it an indispensable resource for researchers and students of human reason.

These are the proceedings of the 10th European Conference on Symbolic and Quantitative Approaches to Reasoning with Uncertainty, ECSQARU 2009, held in Verona (Italy), July 1–3, 2009. The biennial ECSQARU conferences are a major forum for advances in the theory and practice of reasoning under uncertainty. The ?rst ECSQARU conf- ence was held in Marseille (1991), and since then it has been held in Granada (1993), Fribourg (1995), Bonn (1997), London (1999), Toulouse (2001), Aalborg (2003), Barcelona (2005) and Hammamet (2007). The 76 papers gathered in this volume were selected out of 118 submissions from 34 countries, after a rigorous review process. In addition, the conference included invited lectures by three outstanding researchers in the area: Isabelle Bloch (“Fuzzy and bipolar mathematical morphology, applications in spatial reasoning”), Petr Cintula (“From (deductive) fuzzy logic to (logic-based) fuzzy mathematics”),andDaniele Mundici(“Conditionalsandindependence inma- valued logics”). Twospecialsessionswerepresentedduringtheconference:“Conditioning,- dependence, inference” (organizedby Giulianella Coletti and BarbaraVantaggi) and “Mathematicalfuzzy logic” (organizedby Stefano Aguzzoli,Brunella Gerla, Llu´ ?s Godo, Vincenzo Marra, Franco Montagna) On the whole, the program of the conference provided a broad, rich and up-to-date perspective of the current high-level research in the area which is re?ected in the contents of this volume.