J. Christopher Maloney argues that free will is compatible with necessary laws of science and immutable history. For free will emerges from an akratic will that asymptotically approaches the ability to choose to act otherwise than it willfully does.

Christopher Maloney offers an explanation of the fundamental nature of thought. He posits the idea that thinking involves the processing of mental representations that take the form of sentences in a covert language encoded in the mind. The theory relies upon traditional categories of psychology, including such notions as belief and desire. It also draws upon and thus inherits some of the problems of artificial intelligence which it attempts to answer, including what bestows meaning or content upon a (...) thought and what distinguishes genuine from simulated thought. (shrink)

Thought, including conscious perception, is representation. But perceptual representation is uniquely direct, permitting immediate acquaintance with the world and ensuring perception's distinctive phenomenal character. The perceptive mind is extended. It recruits the very objects perceived to constitute self-referential representations determinative of what it is like to perceive.

The Representational Theory of the Mind allows for psychological explanations couched in terms of the contents of propositional attitudes. Propositional attitudes themselves are taken to be relations to mental representations. These representations (partially) determine the contents of the attitudes in which they figure. Thus, Representationalism owes an explanation of the contents of mental representations. This essay constitutes an atomistic theory of the content of formally or syntactically simple mental representation, proposing that the content of such a representation is determined by (...) the intersection of the representation's correlational and control properties. The theory is distinguished from standard information-based accounts of mental content in allowing that the relevant correlations be contingent while insisting on an efferent aspect to mental content. The theory on offer allows for a natural explanation of misrepresentation, finds a niche for the notion of narrow content, welcomes radical first person fallibility with respect to questions of content, admits of mental ambiguity and recognizes that the future of a psychological agent is a factor in determining the content of the agent's present psychological states. (shrink)

An account of the contents of the propositional attitudes is fundamental to the success of the cognitive sciences if, as seems correct, the cognitive sciences do presuppose propositional attitudes. Fodor has recently pointed the way towards a naturalistic explication of mental content in his Psychosemantics (1987). Fodor's theory is a version of the causal theory of meaning and thus inherits many of its virtues, including its intrinsic plausibility. Nevertheless, the proposal may suffer from two deficiencies: (1) It seems not to (...) provide an adequate explanation of misrepresentation. (2) It may also fail, as a species of empiricism, to provide a correct explication of the content of observational concepts and those non-observational concepts whose meaning is to be traced to their causal connections with observational concepts. (shrink)

The Representational Theory of the Mind arises with the recognition that thoughts have contents carried by mental representations. For Abelard to think, for example, that Pegasus is winged is for Abelard to be related to a MENTAL REPRESENTATION whose content is that Pegasus is winged. Now, there are different kinds of representations: pictures, maps, models, and words ‐ to name only some. Exactly what sort of REPRESENTATION is mental representation? (see imagery; connectionism.) Sententialism distinguishes itself as a version of rep‐resentationalism (...) by positing that mental representations are themselves linguistic expressions within a ‘language of thought’ (FODOR, 1975, 1987; Field, 1978; Maloney, 1989). While some sententialists conjecture that the language of thought is just the thinker's spoken language internalized (Harman, 1982), others identify the language of thought with Mentalese, an unarticulated, internal language in which the computations supposedly definitive of cognition occur. Sententialism is certainly a bold and provocative thesis, and so we turn to the reasons that might be offered on its behalf. (shrink)

Metaphors are expressions in artificial, contrived, alien languages, and we understand metaphors by constructing translation schemes linking our natural, literal languages to these theoretically contrived metaphorical languages. The relation between a literal natural language and a metaphorical contrived language is like the relationship between a natively known language and a system of subsequently acquired languages etymologically emerging from that basic natural language. This model for understanding metaphorically contrived language is kin to the familiar model explaining how speakers of a language (...) such as Latin may come to decipher a language like Spanish through projecting to Spanish what they know of Latin without the aid of a translation manual. A metaphor is, thus, seen as a sentence in a nonnatural language, itself derived from and at least partially translatable with the natural, literal language of the metaphor's author or audience. (shrink)

Current computational psychology, especially as described by Fodor (1975, 1980, 1981), Pylyshyn (1980), and Stich (1983), is both a bold, promising program for cognitive science and an alternative to naturalistic psychology (Putnam 1975). Whereas naturalistic psychology depends on the general scientific framework to fix the meanings of general terms and, hence, the content of thoughts utilizing or expressed in those terms, computational cognitive theory banishes semantical considerations in psychological investigations, embracing methodological, not ontological, solipsism. I intend to argue that computational (...) psychology cannot individuate thoughts as it promises. For, semantics is fundamental in fixing an important subset of the computational relations that, according to the computational theory, are supposed both to obtain among thoughts and, thereby, to determine their identity conditions. If what I contend is correct, then contrary to what its advocates maintain, computational psychology is not preferable to naturalistic psychology as a research strategy in cognitive science. (shrink)

This is Putnam at his critical best; he is once again directing the shape of the philosophy of mind for years to come. Putnam scouts with dissatisfaction the prevailing functionalist/computationalist theory of mental states, a view he himself originated more than thirty years ago. Here he despairs of any reductionist theory of mental states, denying that there are naturalistically specifiable natures comprehending mental states of the same kind, although he continues to allow that token mental states may be emergent from (...) and supervenient upon computational states. Putnam is not, then, an eliminativist. Mentalistic eliminativism implies semantic eliminativism generally and, thus, the rejection of both reference and truth, amounting absurdly--by Putnam's lights--to the loss of logic. (shrink)

The contribution of inherited non‐genetic factors to complex diseases is of great current interest. The ways in which mothers and fathers can affect their offspring's health clearly differ as a result of the intimate interactions between mother and offspring during pre‐ and postnatal life. There is, however, potential for some overlap in mechanisms, particularly epigenetic mechanisms. A small number of epidemiological studies and animal models have investigated the non‐genetic contribution of the parents to offspring health. Discovering new mechanisms of disease (...) inheritance is technically difficult, especially in genetically, socially and environmentally heterogeneous human populations. Therefore, rigorous experimental design, appropriate sample numbers and the use of high‐throughput technologies are necessary to provide convincing evidence. Based on recent examples from the literature, here we propose several ways to improve human studies that aim to identify the underlying mechanisms of transgenerational inheritance of metabolic disease. (shrink)

Amyloid-beta peptide plaque in the brain is the primary diagnostic criterion of Alzheimer's disease . The physiological role of Abeta are poorly understood. We have previously determined an Abeta interacting domain in the promoters of AD-associated genes . This AbetaID interacts in a DNA sequence-specific manner with Abeta. We now demonstrate novel Abeta activity as a possible transcription factor. Herein, we detected Abeta-chromatin interaction in cell culture by ChIP assay. We observed that human neuroblastoma cells treated with FITC conjugated Abeta1-40 (...) localized Abeta to the nucleus in the presence of H2O2-mediated oxidative stress. Furthermore, primary rat fetal cerebrocortical cultures were transfected with APP and BACE1 promoter-luciferase fusions, and rat PC12 cultures were transfected with polymorphic APP promoter-CAT fusion clones. Transfected cells were treated with different Abeta peptides and/or H2O2. Abeta treatment of cell cultures produced a DNA sequence-specific response in cells transfected with polymorphic APP clones. Our results suggest the Abeta peptide may regulate its own production through feedback on its precursor protein and BACE1, leading to amyloidogenesis in AD. (shrink)

In this article I review attempts to define the term “ad hoc hypothesis,” focusing on the efforts of, among others, Karl Popper, Jarrett Leplin, and Gerald Holton. I conclude that the term is unhelpful; what is “ad hoc” seems to be a judgment made by particular scientists not on the basis of any well-established definition but rather on their individual aesthetic senses. Further, a hypothesis considered ad hoc can apparently be retroactively declared non–ad hoc on the basis of subsequent data, (...) rendering the term meaningless. (shrink)

This article examines a series of Schelling-like models of residential segregation, in which agents prefer to be in the minority. We demonstrate that as long as agents care about the characteristics of their wider community, they tend to end up in a segregated state. We then investigate the process that causes this and conclude that the result hinges on the similarity of informational states among agents of the same type. This is quite different from Schelling-like behavior and suggests that segregation (...) is an instance of macrobehavior that can arise from a wide variety of micromotives. (shrink)

I offer a new argument for the elimination of ‘beliefs’ from cognitive science based on Wimsatt’s concept of robustness and a related concept of fragility. Theoretical entities are robust if multiple independent means of measurement produce invariant results in detecting them. Theoretical entities are fragile when multiple independent means of detecting them produce highly variant results. I argue that sufficiently fragile theoretical entities do not exist. Recent studies in psychology show radical variance between what self-report and non-verbal behaviour indicate about (...) participants’ beliefs. This is evidence that ‘belief’ is fragile, and is thus a strong candidate for elimination. 1 Introduction2 Robustness and Fragility2.1 A historical example of robustness2.2 Fragility and elimination3 The Received View4 Evidence for the Fragility of Belief4.1 Contamination and fragility4.2 Implicit association tests and fragility5 Attempts to Preserve the Belief Category for Cognitive Science5.1 Beliefs and aliefs5.2 Contradictory beliefs5.3 In-between beliefs and the unity assumption5.4 Belief sub-classes5.5 Self-deception6 Alternative Mental States7 Conclusion. (shrink)