Modal logic, developed as an extension of classical propositional logic and first-order quantification theory, integrates the notions of possibility and necessity and necessary implication. Arguments whose understanding depends on some fundamental knowledge of modal logic have always been important in philosophy of religion, metaphysics, and epistemology. Moreover, modal logic has become increasingly important with the use of the concept of "possible worlds" in these areas. Introductory Modal Logic fills the need for a basic text on modal logic, accessible to students (...) of elementary symbolic logic. Kenneth Konyndyk presents a natural deduction treatment of propositional modal logic and quantified modal logic, historical information about its development, and discussions of the philosophical issues raised by modal logic. Characterized by clear and concrete explanations, appropriate examples, and varied and challenging exercises, Introductory Modal Logic makes both modal logic and the possible-worlds metaphysics readily available to the introductory level student. (shrink)

Aquinas’s reflection on the relationship between faith and science took place amidst serious controversy about the acceptability of the very form of science Aquinas had adopted. Aquinas uses the Aristotelian conception of science and his own view of the place of theology and faith, to produce arguments for the compatibility of reason and science. I examine the arguments he presents in the Summa Contra Gentiles, and I criticize details of his arguments, but I endorse what I see as his general (...) strategy. (shrink)

Three very different assessments of the rationality of theistic belief have emerged from Oxford University in recent years. Richard Swinburne argues that theism is rationally demonstrable, producing a trilogy and more of books building an evidential case for theism. The late John Mackie, on the other hand, argued persistently that theism is not supported by the evidence usually offered for it and is controverted by our best evidence. The most rational course of action, according to him, is to be an (...) atheist. Anthony Kenny, meanwhile, takes an agnostic position, arguing on personal grounds that he neither has adequate reason to accept theism nor adequate reason to embrace atheism. Although he says this issue is one on which it is important to have a view and one on which he formerly held a view, he unhappily finds himself in the position of being agnostic. (shrink)

Craik published only one complete work of any length, this essay on The Nature of Explanation.

We present a model of similarity‐based retrieval that attempts to capture three seemingly contradictory psychological phenomena: (a) structural commonalities are weighed more heavily than surface commonalities in similarity judgments for items in working memory; (b) in retrieval, superficial similarity is more important than structural similarity; and yet (c) purely structural (analogical) remindings e sometimes experienced. Our model, MAC/FAC, explains these phenomena in terms of a two‐stage process. The first stage uses a computationally cheap, non‐structural matcher to filter candidate long‐term memory (...) items. It uses content vectors, a redundant encoding of structured representations whose dot product estimates how well the corresponding structural representations will match. The second stage uses SME (structure‐mapping engine) to compute structural matches on the handful of items found by the first stage. We show the utility of the MAC/FAC model through a series of computational experiments: (a) We demonstrate that MAC/FAC can model patterns of access found in psychological data; (b) we argue via sensitivity analyses that these simulation results rely on the theory; and (c) we compare the performance of MAC/FAC with ARCS, an alternate model of similarity‐based retrieval, and demonstrate that MAC/FAC explains the data better than ARCS. Finally, we discuss limitations and possible extensions of the model, relationships with other recent retrieval models, and place MAC/FAC in the context of other recent work on the nature of similarity. (shrink)

Evolutionary processes such as natural selection and random drift are commonly regarded as causes of population-level change. We respond to a recent challenge that drift and selection are best understood as statistical trends, not causes. Our reply appeals to manipulation as a strategy for uncovering causal relationships: if you can systematically manipulate variable A to bring about a change in variable B, then A is a cause of B. We argue that selection and drift can be systematically manipulated to produce (...) different kinds of population-level change. They should therefore be regarded as causes. (shrink)

The argument from contingency for the existence of God is best understood as a request for an explanation of the total sequence of causes and effects in the universe (‘History’ for short). Many puzzles about how there could be such an explanation arise from the assumption that God is being introduced as one more cause prepended to the sequence of causes that (allegedly) needed explaining. In response to this difficulty, this chapter defends three theses. First, it argues that, if the (...) argument from contingency is to succeed, the explanation of History in terms of God must not be a causal explanation; second, that a particular hypothesis about God’s relation to History—that God is what I call the foundational ground of History—is intelligible and explanatory; third and finally, that the explanatory advantages of this hypothesis cannot be had within the confines of naturalism. (shrink)

Psychotherapy holds out the promise of help for people who are hurting and in need. It can save lives and change lives. In therapy, clients can find their strengths and sense of hope. They can change course toward a more meaningful and healthy life. They can confront loss, tragedy, hopelessness, and the end of life in ways that do not leave them numb or paralyzed. They can discover what brings them joy and what sustains them through hard times. They can (...) begin to trust, or to trust more wisely. They can learn new behaviors in therapy and how to teach themselves new behaviors after therapy ends. They can question what they always believed was a given. They can find out what matters most to them, and how to stop wasting time. They can become happier, or at least less miserable. They can become better able, as Freud noted, to love and to work. They can learn how to accept and love themselves just as they are and accept others who are different from them. Our ethics acknowledge and affirm our profession's responsibilities. This book was written to help strengthen, deepen, and inform ethical awareness and the sense of personal ethical responsibility. Its job is to help you hold onto the ideals-including ethical ideals-that called you into the profession to begin with, to help you develop and fulfill those ideals. There will be so much-trust us on this-that tends to dull ethical awareness, to make ethics drift out of focus, to create barriers between you and your ideals, to replace ethics with pseudo-ethics and ethics placebos. Fatigue, endless paperwork, unrealistic expectations, illness, family crises, not being able to make ends meet, burn out, threats of job loss, insurance coverage that doesn't come close to meeting the needs of our clients, biases that have not been addressed, and so many other forces can pressure us into cutting ethical corners. This book is intended to help you develop a strong and healthy resistance to such forces, to help you weather them without losing your ethical awareness and ideals. (shrink)

Analogy and similarity are central phenomena in human cognition, involved in processes ranging from visual perception to conceptual change. To capture this centrality requires that a model of comparison must be able to integrate with other processes and handle the size and complexity of the representations required by the tasks being modeled. This paper describes extensions to Structure-Mapping Engine since its inception in 1986 that have increased its scope of operation. We first review the basic SME algorithm, describe psychological evidence (...) for SME as a process model, and summarize its role in simulating similarity-based retrieval and generalization. Then we describe five techniques now incorporated into the SME that have enabled it to tackle large-scale modeling tasks: Greedy merging rapidly constructs one or more best interpretations of a match in polynomial time: O); Incremental operation enables mappings to be extended as new information is retrieved or derived about the base or target, to model situations where information in a task is updated over time; Ubiquitous predicates model the varying degrees to which items may suggest alignment; Structural evaluation of analogical inferences models aspects of plausibility judgments; Match filters enable large-scale task models to communicate constraints to SME to influence the mapping process. We illustrate via examples from published studies how these enable it to capture a broader range of psychological phenomena than before. (shrink)

Each author first presents his own side, and then they interact through two rounds of objections and replies. Pedagogical features include standard form arguments, section summaries, bolded key terms and principles, a glossary, and annotated reading lists.

In lieu of an abstract, here is a brief excerpt of the content: -/- [99] JOURNAL OF THE HISTORY OF PHILOSOPHY 23:1 JANUARY 198 5 Book Reviews Kenneth Dorter. Plato's 'Phaedo': An Interpretation. Toronto: University of Toronto Press, 1982. Pp. xi + 233. $28.50. Kenneth Dorter of the University of Guelph has given us a useful and unusual study of the Phaedo, which will attract the interest of a variety of Plato's readers. He provides the careful studies of (...) the dialogue's arguments for immortality to be expected in a sound commentary, paying close attention to the text as well as to recent scholarship, and displaying a good sense of argument. What gives the book additional interest, however, are its features as an interpretation of the Phaedo. Two stand out. First, Dorter wishes to give full weight not only to the logic of the arguments but also to the dramatic details of Plato's writing, believing these to be important in disclosing Plato's intentions. Secondly, he reads the Phaedo in light of a more general understanding of Plato's philosophy, especially the nature of the soul in its cosmic as well as individual aspects. Much of this is set out in a final speculative chapter, where Dorter seeks to make intelligible Plato's developing conception of soul by means of such notions as energy and poles of consciousness. Not every reader will be persuaded; but Dorter is to be commended for an attempt to move the discussion beyond the Phaedo and Plato's own vocabulary. The study gains its coherence from Dorter's belief that Plato's view of soul cannot support the ostensible aim of the dialogue, to provide reassurance of personal immortality. Although he has no doubt that for the Platonic Socrates there is "a meaningful sense in which we may be called immortal" (94, cf. 159), Dorter's analysis must be stretched to provide that sense. In part this is a result of his assessment of the arguments. The first, from reciprocity in nature, can at most show that, given the eternal nature of the world, soul and corporeality in general must continue to exist. The argument from recollection can point only to a non-empirical element in our knowledge ; that from the soul's kinship with the divine is best seen as an analogy developed to awaken within us a sense of eternity. The final argument, though containing fallacies (157), will support the conclusion that immortal soul is imperishable as long as soul is regarded as motive force in the universe, in the first argument's sense. In none of these discussions, then, can Plato's reasoning yield up personal survival. But there is another part to Dorter's case, underlying this conclusion. For Plato the individual human being is a composite of soul and body; so even if Plato were to prove the immortality of the soul he could never establish personal survival (63-64). It is not surprising then that Dorter is left with a doctrine of immortality either reduced to a "discovery of eternity within ourselves" (77), or else dissolved into a principle of enduring cosmic energy. So in neither case does it seem meaningful for Plato to say that we are immortal: the eternal which we sense is no more us than it is anything else. Although it is of course possible that Plato did not intend this consequence of his arguments, Dorter thinks otherwise. In support he invokes literary features of the dialogue to argue that Plato operates on one level for the less sophisticated (who wish to be persuaded of personal survival) and on another for the philosophically reflective reader. Dorter treats the textual evidence for this claim with an appropriate modesty, and tries to justify Plato's apparent duplicity as an attempt to convince the weak by a 'noble lie' (95-97). Nevertheless this leads Dorter to mix together too quickly for this reader popular religion, myth, and metaphor. To the fact that Plato does not espouse the language of popular religion literally, Dorter adds his own view of myth as an imaginative appeal to emotion that can be translated without loss into rational discourse (7, 165, a95). So the accounts of the afterlife at 8oc-84 b... (shrink)

An omnipotent being would be a being whose power was unlimited. The power of human beings is limited in two distinct ways: we are limited with respect to our freedom of will, and we are limited in our ability to execute what we have willed. These two distinct sources of limitation suggest a simple definition of omnipotence: an omnipotent being is one that has both perfect freedom of will and perfect efficacy of will. In this paper we further explicate this (...) definition and show that it escapes the standard objections to divine omnipotence. (shrink)

The purpose of this paper is to provide a simple yet comprehensive organizing scheme for the responsible conduct of research (RCR). The heuristic offered here should prove helpful in research ethics education, where the many and heterogeneous elements of RCR can be bewildering, as well as research into research integrity and efforts to form RCR policy and regulations. The six domains are scientific integrity, collegiality, protection of human subjects, animal welfare, institutional integrity, and social responsibility.

Whether to treat autism as exculpatory in any given circumstance appears to be influenced both by models of autism and by theories of moral responsibility. This article looks at one particular combination of theories: autism as theory of mind challenges and moral responsibility as requiring appropriate experience of the reactive attitudes. In pursuing this particular combination of ideas, we do not intend to endorse them. Our goal is, instead, to explore the implications of this combination of especially prominent ideas about (...) autism and about moral responsibility. These implications can be quite serious and practical for autists and those who interact directly with autists, as well as for broader communities as they attend to the fair, compassionate, and respectful treatment of increasing numbers of autistic adults. We find that these theories point to a limited range of situations in which autists should not be blamed for transgressive actions for which neurotypical individuals should be blamed. We build on what others have written on these issues by bringing in a recent cognitive model of the role theory of mind plays in empathy, by discussing the social implications of the theoretical findings, and by raising questions about the compatibility of reactive attitude theories of moral responsibility with the neurodiversity approach to autism. (shrink)

The chapters in this book have evolved from talks originally presented at The First International Workshop on Human and Machine Cognition.

Berkeley's philosophy is meant to be a defense of commonsense. However, Berkeley's claim that the ultimate constituents of physical reality are fleeting, causally passive ideas appears to be radically at odds with commonsense. In particular, such a theory seems unable to account for the robust structure which commonsense (and Newtonian physics) takes the world to exhibit. The problem of structure, as I understand it, includes the problem of how qualities can be grouped by their co-occurrence in a single enduring object (...) and how these enduring objects can bear spatiotemporal, causal, and other relations to one another. I argue that Berkeley's solution to these problems lies in his views about language. At one level, human language allows us to exploit patterns in our perceptions to construct a highly structured representation of the physical world which allows us to make accurate predictions at minimal cognitive expense. At a deeper level, these patterns occur in perception because our perceptions themselves form a language in which God speaks to us. (shrink)

According to commonsense, some collections of objects compose wholes, and others do not. However, philosophers have found serious difficulties with attempts to preserve this thesis, and especially with attempts to preserve the existence of just those composite objects recognized by commonsense. In this paper, I defend a classical solution to this problem: "it is the mind that maketh each thing to be one" (Berkeley, Siris, sect. 356). According to this view, which I call 'mereological idealism,' it is when a plurality (...) is united in thought under a concept that a unified whole comes to exist. After explaining the view in more detail, I show how it escapes three standard arguments against commonsense views of composition. (shrink)

This chapter develops a theory of categorical normativity, of those principles that have authority over us regardless of our ends and interests. It argues that there is an intimate connection between these norms and the conditions of agency. In this respect, it offers a version of constitutivism. But the version of constitutivism defended is unique in a few respects. First, it is naturalistic: agency is an emergent property, like the properties of biology and economics. Second, it is social: agency is (...) something constructed by the complex interaction of agents. And third, it supports the normativity of a particular contractualist procedure: adhering to Kant’s Formula of the Realm of Ends is a condition on agency, and so a categorical requirement. (shrink)

_A study of the first half of Kant’s Critique of Judgment._.

The central unifying element in the philosophy of Peter Browne is his theory of analogy. Although Browne's theory was originally developed to deal with some problems about religious language, Browne regards analogy as a general purpose cognitive mechanism whereby we substitute an idea we have to stand for an object of which we, strictly speaking, have no idea. According to Browne, all of our ideas are ideas of sense, and ideas of sense are ideas of material things. Hence we can (...) conceive of spiritual things – including even our own spirit – only by analogy. One interesting application Browne makes of his theory is an account of how concepts such as knowledge can be correctly applied to beings that have no intrinsic properties in common, such as non-human animals, humans, angels, and God. I argue that this is best understood as what, in the contemporary literature, is known as a ‘multiple realizability’ problem and that Browne's solution to this problem has important similarities to functionalist theories in recent philosophy of mind. (shrink)

The comprehensive guide to ethics "An excellent blend of case law, research evidence, down-to-earth principles, and practical examples from two authors with outstanding expertise. Promotes valuable understanding through case illustrations, self-directed exercises, and thoughtful discussion of such issues as cultural diversity."--Dick Suinn, president-elect 1998, American Psychological Association "The scenarios and accompanying questions will prove especially helpful to those who offer courses and workshops concerned with ethics in psychology."--Charles D. Spielberger, former president, American Psychological Association; distinguished research professor of psychology, University (...) of South Florida The authors draw on their professional experience, empirical studies, and case examples to examine the ethical responsibilities that confront psychotherapists and counselors in their day-to-day practice. They offer insights into contending with the sometimes competing demands of clients' needs, formal ethical principles, personal values, and evolving legal standards in a range of areas--including fees, informed consent, sexual concerns, confidentiality, documentation, and supervision. (shrink)

Alexander Pruss and I have proposed an analysis of omnipotence which makes no use of the problematic terms 'power' and 'ability'. However, this raises an obvious worry: if our analysis is not related to the notion of power, then how can it count as an analysis of omnipotence, the property of being all-powerful, at all? In this paper, I show how omnipotence can be understood as the possession of infinite power (general, universal, or unlimited power) rather than the possession of (...) particular powers. I then argue that the ordinary notions of particular powers or abilities can be understood as applying vague limitations to the notion of infinite power. The vagueness of these limitations is the source of the well-known difficulties in the analysis of ability. (shrink)

The will of an omnipotent being would be perfectly efficacious. Alexander Pruss and I have provided an analysis of perfect efficacy that relies on non-trivial counterpossible conditionals. Scott Hill has objected that not all of the required counterpossibles are true of God. Sarah Adams has objected that perfect efficacy of will (on any analysis) would be an extrinsic property and so is not suitable as a divine attribute. I argue that both of these objections can be answered if the divine (...) will is taken to be the ground, rather than the cause, of its fulfillment. (shrink)

Sketching is a powerful means of working out and communicating ideas. Sketch understanding involves a combination of visual, spatial, and conceptual knowledge and reasoning, which makes it both challenging to model and potentially illuminating for cognitive science. This paper describes CogSketch, an ongoing effort of the NSF-funded Spatial Intelligence and Learning Center, which is being developed both as a research instrument for cognitive science and as a platform for sketch-based educational software. We describe the idea of open-domain sketch understanding, the (...) scientific hypotheses underlying CogSketch, and provide an overview of the models it employs, illustrated by simulation studies and ongoing experiments in creating sketch-based educational software. (shrink)

In the Preface to the Three Dialogues<, Berkeley says that one of his main aims is to refute the free-thinkers. Puzzlingly, however, we are then treated to a dialogue between two Christians in which the free-thinkers never reappear. This is related to a second, more general puzzle about Berkeley's religious polemics: although Berkeley says he is defending orthodox conclusions, he also reminds himself in his notebooks "To use the utmost Caution not to give the least Handle of offence to the (...) Church or Church-men." What is Berkeley worried about? Both of these puzzles are solved by the recognition that the argument against matter in the Three Dialogues is patterned after an argument for atheism that Berkeley attributed to Anthony Collins. Berkeley's aim is thus to use the free-thinkers' own premises and arguments against them. In doing this, however, he rejects doctrines many churchmen held dear -- most notably, the doctrine of divine analogy. (shrink)

Traditionally, religious doctrines and practices have been divided into two categories. Those that purport to be justified by natural reason alone are said to be part of natural religion, while those which purport to be justified only by appeal to supernatural revelation are said to be part of revealed religion. One of the central aims of Berkeley's philosophy is to understand and defend both the doctrines and the practices of both natural and revealed (Christian) religion. This chapter will provide a (...) survey of this aspect of Berkeley's thought. (shrink)