1 Knowledge and Justification This book is an investigation of one central problem which arises in the attempt to give a philosophical account of empirical ...

Given the fundamental role that concepts play in theories of cognition, philosophers and cognitive scientists have a common interest in concepts. Nonetheless, there is a great deal of controversy regarding what kinds of things concepts are, how they are structured, and how they are acquired. This chapter offers a detailed high-level overview and critical evaluation of the main theories of concepts and their motivations. Taking into account the various challenges that each theory faces, the chapter also presents a novel approach (...) to concepts that is organized around two ideas. The first is a pluralistic view of differing types of conceptual structure. The second is a model that treats concepts as atomic representations that are linked to various types of conceptual structures. (shrink)

A comprehensive defence of the rationalist view that insight independent of experience is a genuine basis for knowledge.

One of the many problems that would have t o be solved by a satisfactory theory of empirical knowledge, perhaps the most central is a general structural problem which I shall call the epistemic regress problem: the problem of how to avoid an in- finite and presumably vicious regress of justification in ones account of the justifica- tion of empirical beliefs. Foundationalist theories of empirical knowledge, as we shall see further below, attempt t o avoid the regress by locating a (...) class of empirical beliefs whose justification does not depend on that of other empirical beliefs. Extemalist theories, the topic of the present paper, represent one species of foundationalism. (shrink)

Children with specific language impairment show a significant deficit in spoken language that cannot be attributed to neurological damage, hearing impairment, or intellectual disability. More prevalent than autism and at least as prevalent as dyslexia, SLI affects approximately seven percent of all children; it is longstanding, with adverse effects on academic, social, and economic standing. The first edition of this work established _Children with Specific Language Impairment_ as the landmark reference on this condition, considering not only the disorder's history, possible (...) origins, and treatment but also what SLI might tell us about language organization and development in general. This second edition offers a complete update of the earlier volume. Much of the second edition is completely new, reflecting findings and interpretations based on the hundreds of studies that have appeared since the publication of the first edition in 1997. Topics include linguistic details, word and sentence processing findings, genetics, neurobiology, treatment, and comparisons to such conditions as autism spectrum disorders, ADHD, and dyslexia. The book covers SLI in children who speak a wide range of languages, and, although the emphasis is on children, it also includes studies of adults who were diagnosed with SLI as children or are the parents of children with SLI. Written by a leading scholar in the field, Children with Specific Language Impairment offers the most comprehensive, balanced, and unified treatment of SLI available. (shrink)

Introduction -- Part I: The classical problems of epistemology -- Descartes's epistemology -- The concept of knowledge -- The problem of induction -- A priori justification and knowledge -- Immediate experience -- Knowledge of the external world -- Some further epistemological issues : other minds, testimony, and memory -- Part II: Contemporary responses to the cartesian epistemological program -- Introduction to part II -- Foundationalism and coherentism -- Internalism and externalism -- Quine and naturalized epistemology -- Knowledge and skepticism.

The best things in my Ufe have come to me by accident and this book results from one such accident: my having the opportunity, out of the blue, to go to work as H. Tristram Engelhardt, Jr. 's, research assistant at the Institute for the Medical Humanities in the University of Texas Medi cal Branch at Galveston, Texas, in 1974, on the recommendation of our teacher at the University of Texas at Austin, Irwin C. Lieb. During that summer Tris "lent" (...) me to Chester Bums, who has done important schol arly work over the years on the history of medical ethics. I was just finding out what bioethics was and Chester sent me to the rare book room of the Medical Branch Library to do some work on something called "medical deontology. " I discovered that this new field of bioethics had a history. This string of accidents continued, in 1975, when Warren Reich (who in 1979 made the excellent decisions to hire me to the faculty in bioethics at the Georgetown University School of Medicine and to persuade Andre Hellegers to appoint me to the Kennedy Institute of Ethics) took Tris Engelhardt's word for it that I could write on the history of modem medical ethics for Warren's major new project, the Encyclopedia of Bioethics. Warren then asked me to write on eighteenth-century British medical ethics. (shrink)

Noam Chomsky's Poverty of the Stimulus Argument is one of the most famous and controversial arguments in the study of language and the mind. Though widely endorsed by linguists, the argument has met with much resistance in philosophy. Unfortunately, philosophical critics have often failed to fully appreciate the power of the argument. In this paper, we provide a systematic presentation of the Poverty of the Stimulus Argument, clarifying its structure, content, and evidential base. We defend the argument against a variety (...) of philosophical criticisms, new and old, and argue that the Poverty of the Stimulus Argument continues to deserve its guiding role in the study of language and the mind. (shrink)

Conceptual analysis is undergoing a revival in philosophy, and much of the credit goes to Frank Jackson. Jackson argues that conceptual analysis is needed as an integral component of so-called serious metaphysics and that it also does explanatory work in accounting for such phenomena as categorization, meaning change, communication, and linguistic understanding. He even goes so far as to argue that opponents of conceptual analysis are implicitly committed to it in practice. We show that he is wrong on all of (...) these points and that his case for conceptual analysis doesn't succeed. At the same time, we argue that the sorts of intuitions that figure in conceptual analysis may still have a significant role to play in philosophy. So naturalists needn't disregard intuitions altogether. (shrink)

Radical concept nativism is the thesis that virtually all lexical concepts are innate. Notoriously endorsed by Jerry Fodor (1975, 1981), radical concept nativism has had few supporters. However, it has proven difficult to say exactly what’s wrong with Fodor’s argument. We show that previous responses are inadequate on a number of grounds. Chief among these is that they typically do not achieve sufficient distance from Fodor’s dialectic, and, as a result, they do not illuminate the central question of how new (...) primitive concepts are acquired. To achieve a fully satisfactory response to Fodor’s argument, one has to juxtapose questions about conceptual content with questions about cognitive development. To this end, we formulate a general schema for thinking about how concepts are acquired and then present a detailed illustration. (shrink)

The book highlights important research strategies in the quest to find thecause of SLI and to develop methods of prevention and treatment.

One of the most important abilities we have as humans is the ability to think about number. In this chapter, we examine the question of whether there is an essential connection between language and number. We provide a careful examination of two prominent theories according to which concepts of the positive integers are dependent on language. The first of these claims that language creates the positive integers on the basis of an innate capacity to represent real numbers. The second claims (...) that language’s function is to integrate contents from modules that humans share with other animals. We argue that neither model is successful. (shrink)

In virtue of what do the utterances we make mean what they do? What facts about these signs, about us, and about our environment make it the case that they have the meanings they do? According to a tradition stemming from H.P. Grice through David Lewis and Stephen Schiffer it is in virtue of facts about conventions that we participate in as language users that our utterances mean what they do (see Gr'ice 1957, Lewis 1969, 1983, Schiffer 1972, 1982). This (...) view currently enjoys widespread acceptance among philosophers of mind and language. Though most are not particularly interested in the details of such programs, the dominant view seems to be that something of the sort proposed by Grice, Lewis and Schiffer is basically right. Thus, Jerry Fodor, refiecting what I take to be prevalent attitudes in the field, writes. (shrink)

One of the most important recent developments in the study of concepts has been the resurgence of interest in nativist accounts of the human conceptual system. However, many theorists suppose that a key feature of neural organization—the brain’s plasticity—undermines the nativist approach to concept acquisition. We argue that, on the contrary, not only does the brain’s plasticity fail to undermine concept nativism, but a detailed examination of the neurological evidence actually provides powerful support for concept nativism.

This volume is a comprehensive survey of contemporary thought on a wide range of issues and provides students with the basic background to current debates in metaphysics.

Philosophers have often claimed that general ideas or representations have their origin in abstraction, but it remains unclear exactly what abstraction as a psychological process consists in. We argue that the Lockean aspiration of using abstraction to explain the origins of all general representations cannot work and that at least some general representations have to be innate. We then offer an explicit framework for understanding abstraction, one that treats abstraction as a computational process that operates over an innate quality space (...) of fine-grained general representations. We argue that this framework has important philosophical implications for the nativism-empiricism dispute, for questions about the acquisition of unstructured representations, and for questions about the relation between human and animal minds. (shrink)

Hilary Putnam's Twin Earth thought experiment has come to have an enormous impact on contemporary philosophical thought. But while most of the discussion has taken place within the context of the philosophy of mind and language, Terence Horgan and Mark Timmons (H8cT) have defended the intriguing suggestion that a variation on the original thought experiment has important consequences for ethics.' In a series of papers, they' ve developed the idea of a Moral Twin Earth and have argued that its significance (...) is that it has the resources to undermine naturalistic versions of moral realism.' H8t T don't hold back in their assessment. "Moral Twin.. (shrink)

Elizabeth Anscombe develops a non-psychologistic account of intentional individual action. According to her, action is intentional when it is subject to a special sense of the question “Why?”, the answer to which displays certain forms of explanation that are available to the agent. In this paper, I present an Anscombean account of collective action. On this account, an action is collective if it is subject to a certain sense of the question why, and displays a form different from, but related (...) to, that of individual action. In particular, agents act together on my account if and only if their actions can all be straightforwardly instrumentally rationalized by the same action. Since an Anscombean account is non-psychologistic in that it does not presuppose that actions are intentional in virtue of being caused by a mental state, my account dissolves most worries about group minds. If I am right, such concerns arise from a bad picture of individual action that poses special problems when carried over to the collective case. (shrink)

It is fairly standard in accounts of the epistemology of perceptual knowledge to distinguish three main alternative positions: representationalism, phenomenalism, and a third view that is called either naïve realism or direct realism. I have always found the last of these views puzzling and elusive. My aim in this paper is to try to figure out what direct realism amounts to, mainly with an eye to seeing whether it offers a genuine epistemological alternative to the other two views and to (...) representationalism in particular. My main thesis will be that it does not—that what is right in direct realist views turns out to have little bearing on the central epistemological issue concerning perceptual knowledge. (shrink)

I argue for the use of the adjunction operator (adding a single new element to an existing set) as a basis for building a finitary set theory. It allows a simplified axiomatization for the first-order theory of hereditarily finite sets based on an induction schema and a rigorous characterization of the primitive recursive set functions. The latter leads to a primitive recursive presentation of arithmetical operations on finite sets.

The historically most central epistemological issue concerning perception, to which this article will be almost entirely devoted, is whether and how beliefs about physical objects and about the physical world generally can be justified or warranted on the basis of sensory or perceptual experience—where it is internalist justification, roughly having a reason to think that the belief in question is true, that is mainly in question (see the entry justification, epistemic: internalist vs. externalist conceptions of). This issue, commonly referred to (...) as “the problem of the external world,” divides into two closely related sub-issues, which correspond to the first two main sections below. The first of these issues has to do with the nature of sensory experience and its relation to the physical world; it is typically (though as we shall see not altogether perspicuously) formulated as the question of what are the immediate objects of awareness in sensory experience or, in a variant but essentially equivalent terminology, of what is given in such experience. Perhaps the most historically standard, though not currently the most popular answer to this question has been that it is sense-data (private, non-physical entities that actually have the immediately experienced sensory qualities) that are the immediate objects of awareness or that are given. The second issue has to do with the way in which beliefs about the physical world are justified on the basis of such sensory experience. If it is concluded that physical objects are not themselves given, the two main answers to this question are representationalism or indirect realism (the view that the immediate objects of experience represent or depict physical objects in a way that allows one to infer justifiably from such experience to the existence of the corresponding “external” objects) and phenomenalism (the view.. (shrink)

The Language of Thought Hypothesis is often taken to have the fatal flaw that it generates an explanatory regress. The language of thought is invoked to explain certain features of natural language (e.g., that it is learned, understood, and is meaningful), but, according to the regress argument, the language of thought itself has these same features and hence no explanatory progress has been made. We argue that such arguments rely on the tacit assumption that the entire motivation for the language (...) of thought consists in explaining the explanandum that allegedly generates the regress. But this tacit assumption is simply false. The Language of Thought Hypothesis is a cogent view and one with considerable explanatory advantages. (shrink)

Strong nativist views about numerical concepts claim that human beings have at least some innate precise numerical representations. Weak nativist views claim only that humans, like other animals, possess an innate system for representing approximate numerical quantity. We present a new strong nativist model of the origins of numerical concepts and defend the strong nativist approach against recent cross-cultural studies that have been interpreted to show that precise numerical concepts are dependent on language and that they are restricted to speakers (...) of languages with the right kind of structure. (shrink)

Ordinal addition and multiplication can be extended in a natural way to all sets. I survey the structure of the sets under these operations. In particular, the natural partial ordering associated with addition of sets is shown to be a tree. This allows us to prove that any set has a unique representation as a sum of additively irreducible sets, and that the non-empty elements of any model of set theory can be partitioned into infinitely many submodels, each isomorphic to (...) the original model. Also any model of set theory has an isomorphic extension in which the empty set of the original model is non-empty. Among other results, the relations between the arithmetical operations and the transitive closure and the adductive hierarchy are elucidated. (shrink)

Leibniz's earliest philosophy and its importance for his mature philosophy have not been examined in detail, particularly in the level of detail that one can achieve by placing Leibniz's philosophy in the context of the sources for two of the most basic concerns of his philosophical career: his metaphysics of individuals and the principle oftheir individuation. In this book I provide for the first time a detailed examination of these two Leibnizian themes and trace its implications for how we should (...) interpret other major Leibnizian themes and for how we should read Leibniz and other philosophers of the sixteenth and later centuries as 'modem' philosophers. Leibniz began his philosophical career more than 300 years ago, a fact that shapes fundamentally my attempt in the pages that follow to come to terms now with the texts that he left us. Leibniz's did not do philosophy in a way wholly congenial to twentieth century philosophical methodologies, especially those that have enjoyed some prominence in recent Anglo-American philosophy. Moreover, as we shall see, Leibniz is not a modem philosopher, when 'modem' is understood to mean making a sharp break with medieval philosophy. Indeed, I shall argue, scholars should discard such terms as 'modem' from historical philosophical scholarship, so that old texts can be allowed to remain old - to stand on their own in and from times now long past. (shrink)

This study investigated the mechanisms behind episodic autobiographical memory development in school-age children. Thirty children performed a novel EAM test. We computed one index of episodicity via autonoetic consciousness and two indices of retrieval spontaneity for a recent period and a more remote one . Executive functions, and episodic and personal semantic memory were assessed. Results showed that recent autobiographical memories were mainly episodic, unlike remote ones. An age-related increase in the indices of episodicity and specific spontaneity for recent AMs (...) was mainly mediated by an age-related increase in the efficiency of the three cognitive abilities. Remote AMs varied only slightly with age , reflecting improvements in semantic abilities. Thus, EAM development in school-age children is essentially bound up with the increasing efficiency of cognitive abilities. Results are discussed in the light of models of childhood amnesia. (shrink)

This article defines a hierarchy on the hereditarily finite sets which reflects the way sets are built up from the empty set by repeated adjunction, the addition to an already existing set of a single new element drawn from the already existing sets. The structure of the lowest levels of this hierarchy is examined, and some results are obtained about the cardinalities of levels of the hierarchy.

: In this paper, I investigate Leibniz's conception of final causation. I focus especially on the role that Leibnizian final causes play in intentional action, and I argue that for Leibniz, final causes are a species of efficient causation. It is the intentional nature of final causation that distinguishes it from mechanical efficient causation. I conclude by highlighting some of the implications of Leibniz's conception of final causation for his views on human freedom, and on the unconscious activity of substances.

Descartes a entrepris de détruire la pratique aristotélicienne de la philosophie : à son savoir seulement probable, les Regulae, puis les Essais opposent une science certaine d'objets clairs et distincts. Mais cette instauration concerne aussi, peut-être même d'abord, l'idéal pratique qu'Aristote ne cesse de viser dans les sciences théorétiques : le sage parvient à la félicité par l'exercice même d'une connaissance si parfaite qu'elle imite celle du dieu, qui pense sa pensée en acte et éternellement. Descartes met décidément en crise (...) la félicité par la contemplation, dont la pensée médiévale avait hérité d'Aristote. Pourtant, une autre figure de la félicité se dégage tout aussi indiscutablement de l'entreprise cartésienne : la méthode, la certitude scientifique qu'elle permet et les principes métaphysiques qui assurent l'une et l'autre restent, à chaque moment, solidaires d'une attitude et d'une ambition proprement morales - la volonté infinie aboutit à la générosité, où la considération du bon usage de notre libre-arbitre permet le - contentement de soi-même -. Ainsi la philosophie atteint-elle, pour Descartes aussi, à une félicité. Mais à une félicité volontaire et non plus contemplative. On tentera donc d'abord de mesurer, dans différents champs de la philosophie cartésienne, l'impact de la certitude jusque sur les questions d'éthique ; ensuite, de souligner la référence constante, quoique souvent implicite, de Descartes à la félicité telle qu'Aristote la visait ; enfin, de suivre leur dialogue au fil conducteur de leurs versions divergentes, mais complices, de l'admiratio et du thaumazein. (shrink)

IT IS WELL KNOWN THAT LEIBNIZ’S NOTION OF HARMONY plays a crucial role in his philosophical system. Leibniz drew on this concept of harmony in motivating, and explaining, numerous areas of his thought: everything from Leibnizian mathematics and metaphysics to ethics and social philosophy, incorporates the notion of harmony as a central descriptive and explanatory concept. While there has been much discussion of some the applications of harmony in Leibniz’s system– especially the mind-body harmony, and the so-called universal harmony of (...) simple perceiving substances–little attention has been paid to Leibniz’s very concept of harmony. Yet it seems important for understanding Leibniz’s holistic philosophy that we grasp this concept, for he employed the term “harmony” when describing so many features of the created world: there is a harmony between geometry and physics, between efficient and final causation, between nature and grace, to mention just a few. (shrink)

The “high school algebra” laws of exponentiation fail in the ordinal arithmetic of sets that generalizes the arithmetic of the von Neumann ordinals. The situation can be remedied by using an alternative arithmetic of sets, based on the Zermelo ordinals, where the high school laws hold. In fact the Zermelo arithmetic of sets is uniquely characterized by its satisfying the high school laws together with basic properties of addition and multiplication. We also show how in both arithmetics the behavior of (...) exponentiation depends on whether the empty set is an element of the base. (shrink)

Moral concerns about the authority, power, and trustworthiness of physicians have become important topics in clinical ethics during the past three decades. These concerns have come to greater prominence with the increasing involvement of large-scale private institutions in the organization and delivery of medical services, especially managed care organizations, and with the increasing involvement of government in the payment for and organization and delivery of medical services. When physicians act as the agents of large institutions or governments, the power of (...) physicians over their patients increases. The purposes of this article are (1) to reflect briefly on the historical origins of the moral problem of physicians' power in medicine, and (2) to introduce the articles in the 1999 annual number of the Journal of Medicine and Philosophy on topics in clinical ethics. (shrink)