The Concussion in Sport Group guidelines have successfully brought the attention of brain injuries to the global medical and sport research communities, and has significantly impacted brain injury-related practices and rules of international sport. Despite being the global repository of state-of-the-art science, diagnostic tools and guides to clinical practice, the ensuing consensus statements remain the object of ethical and sociocultural criticism. The purpose of this paper is to bring to bear a broad range of multidisciplinary challenges to the processes and (...) products of sport-related concussion movement. We identify lacunae in scientific research and clinical guidance in relation to age, disability, gender and race. We also identify, through multidisciplinary and interdisciplinary analysis, a range of ethical problems resulting from conflicts of interest, processes of attributing expertise in sport-related concussion, unjustifiably narrow methodological control and insufficient athlete engagement in research and policy development. We argue that the sport and exercise medicine community need to augment the existing research and practice foci to understand these problems more holistically and, in turn, provide guidance and recommendations that help sport clinicians better care for brain-injured athletes. (shrink)

We present a synthetic theory of skilled action which proposes that cognitive processes make an important contribution to almost all skilled action, contrary to influential views that many skills are performed largely automatically. Cognitive control is focused on strategic aspects of performance, and plays a greater role as difficulty increases. We offer an analysis of various forms of skill experience and show that the theory provides a better explanation for the full set of these experiences than automatic theories. We further (...) show that the theory can explain experimental evidence for skill automaticity, including evidence that secondary tasks do not interfere with expert performance, and evidence that experts have reduced memory for performance of sensorimotor skills. (shrink)

The standard treatment of conditional probability leaves conditional probability undefined when the conditioning proposition has zero probability. Nonetheless, some find the option of extending the scope of conditional probability to include zero-probability conditions attractive or even compelling. This article reviews some of the pitfalls associated with this move, and concludes that, for the most part, probabilities conditional on zero-probability propositions are more trouble than they are worth.

There is abundant evidence of contextual variation in the use of “S knows p.” Contextualist theories explain this variation in terms of semantic hypotheses that refer to standards of justification determined by “practical” features of either the subject’s context (Hawthorne & Stanley) or the ascriber’s context (Lewis, Cohen, & DeRose). There is extensive linguistic counterevidence to both forms. I maintain that the contextual variation of knowledge claims is better explained by common pragmatic factors. I show here that one is variable (...) strictness. “S knows p” is commonly used loosely to implicate “S is close enough to knowing p for contextually indicated purposes.” A pragmatic account may use a range of semantics, even contextualist. I use an invariant semantics on which knowledge requires complete justification. This combination meets the Moorean constraint as well as any linguistic theory should, and meets the intuition constraint much better than contextualism. There is no need for ad hoc error theories. The variation in conditions of assertability and practical rationality is better explained by variably strict constraints. It will follow that “S knows p” is used loosely to implicate that the condition for asserting “p” and using it in practical reasoning are satisfied. (shrink)

According to current philosophical lore, Kant rejected the notion that philosophy can progress by psychological means and endeavored to restrict it accordingly. This book reverses the frame from Kant the anti-psychological critic of psychological philosophy to Kant the preeminent psychological critic of non-psychological philosophy.

What does it mean to say that a scientific theory is unified? Prominent attempts by John Watkins, Philip Kitcher, and Margaret Morrison to answer this question face serious difficulties, and many analysts of science remain pessimistic about the possibility of ever rendering precise or explaining what theoretical unity consists in. This paper gives grounds for optimism, offering a novel account of the concept of unification. This account is tested against a detailed study of the standard model in contemporary high-energy physics, (...) a theory for which a high degree of unity has repeatedly been claimed. (shrink)

ABSTRACTIn keeping with the dominant view that skills are largely automatic, the standard view of memory systems distinguishes between a representational declarative system associated with cognitive processes and a performance-based procedural system. The procedural system is thought to be largely responsible for the performance of well-learned skilled actions. Here we argue that most skills do not fully automate, which entails that the declarative system should make a substantial contribution to skilled performance. To support this view, we review evidence showing that (...) the declarative system does indeed play a number of roles in skilled action. (shrink)

Much work on the sense of agency has focused either on abnormal cases, such as delusions of control, or on simple action tasks in the laboratory. Few studies address the nature of the sense of agency in complex natural settings, or the effect of skill on the sense of agency. Working from 2 case studies of mountain bike riding, we argue that the sense of agency in high-skill individuals incorporates awareness of multiple causal influences on action outcomes. This allows fine-grained (...) differentiation of the contributions of self and external factors to action outcomes. We further argue that the sense of agency incorporates prospective awareness of actions that are possible in a situation and awareness of the limits of control. These forms of sense of agency enable highly flexible, context-sensitive strategic control, and are likely to contribute to high interindividual variability in responses to complex tasks. (shrink)

The use of ‘S knows p’ varies from context to context. The contextualist theories of Cohen, Lewis, and DeRose explain this variation in terms of semantic hypotheses: ‘S knows p’ is indexical in meaning, referring to features of the ascriber’s context like salience, interests, and stakes. The linguistic evidence against contextualism is extensive. I maintain that the contextual variation of knowledge claims results from pragmatic factors. One is variable strictness (Davis, Philos Stud, 132(3):395–438, 2007). In addition to its strict use, (...) ‘S knows p’ may be used loosely to implicate that S is close enough to knowing p for contextually indicated purposes. Here I explore another variable: belief about what is known. This factor is pragmatic rather than semantic in that it affects the use of ‘S knows p’ without affecting its truth conditions. While variation in strictness accounts for the variation in the bank, parking, and some lottery cases, variation in belief accounts for the variation in other lottery cases and the epistemology cases. Along the way, I sketch an insensitive invariantist semantics that is strict but non-skeptical, and show how it works with these pragmatic factors. (shrink)

The nature of the cognition-motor interface has been brought to prominence by Butterfill & Sinigaglia, who argue that the representations employed by the cognitive and motor systems should not be able to interact with each other. Here I argue that recent empirical evidence concerning the interface contradicts several of the assumptions incorporated in Butterfill & Sinigaglia’s account, and I seek to develop a theoretical picture that will allow us to explain the structure of the interface presented by this evidence. The (...) central idea is that neural plasticity incorporates metarepresentational rules for constructing representational systems and linking them. The structure of the cognition-motor interface is constructed flexibly during development and skill learning based on information processing demands. (shrink)

We respond to Moseley and Wilkinson's defense of inner speech models of AVH.

This new interpretation of Fichte's Jena system focuses on the problem of the objectivity of consciousness.

According to act theories, propositions are structured cognitive act‐types. Act theories appear to make propositions inherently representational and truth‐evaluable, and to provide solutions to familiar problems with alternative theories, including Frege’s and Russell’s problems, and the third‐realm and unity problems. Act theories have critical problems of their own, though: acts as opposed to their objects are not truth evaluable, not structured in the right way, not expressed by sentences, and not the objects of propositional attitudes. I show how identifying propositions (...) with other cognitive event‐types, namely thoughts, has the perceived virtues of act theories without the defects. (shrink)

Relational, operator, and predicate systems are distinguished on the basis that they correspond to the three possible pair-wise bracketings into two constituents of the three parts of a proposition: relation, subject, and object. It is asserted that the verbal propositional modality (left hemisphere) uses a predicate grammar, while the spatial-image operational modality (right hemisphere) uses an operator grammar. Verbal propositional memory has the capacity for extensive propositional embedding while spatial operational memory does not.

I focus on problems defining skill and a core theoretical dispute over whether skilled action is largely automatic or consciously controlled. The dominant view in philosophy and psychology has been that skills are automatic, but an emerging body of work suggests that conscious cognition plays a significant role.

There are good reasons for pursuing a theory of knowledge by way of understanding the connection between knowledge and luck. Not surprisingly, then, there has been a burgeoning of interest in “luck theories” of knowledge as well as in theories of luck in general. Unfortunately, “luck” proves to be as recalcitrant an analysandum as “knows.” While it is well worth pursuing a general theory of luck despite these difficulties, our theory of knowledge might be made more manageable if we could (...) find a more restricted notion that captured the core phenomena of luck that are relevant to whether or not someone knows. This essay makes the attempt to delineate such a notion, called “mere coincidence.”. (shrink)

David Lewis, Stewart Cohen, and Keith DeRose have proposed that sentences of the form S knows P are indexical, and therefore differ in truth value from one context to another.1 On their indexical contextualism, the truth value of S knows P is determined by whether S meets the epistemic standards of the speakers context. I will not be concerned with relational forms of contextualism, according to which the truth value of S knows P is determined by the standards of the (...) subject Ss context, regardless of the standards applying to the speaker making the knowledge claim. Relational contextualism is a form of normative relativism. Indexical contextualism is a semantic theory. When the subject is the speaker, as when S is the first person pronoun I, the two forms of contextualism coincide. But otherwise, they diverge. I critically examine the principal arguments for indexicalism, detail linguistic evidence against it, and suggest a pragmatic alternative. (shrink)

Russell ([2022]. “Fancy Loose Talk About Knowledge.” Inquiry 65: 789–820.) defends a novel form of skeptical invariantism, according to which knowledge ascriptions are hardly ever true because they are so demanding, but nonetheless are ordinarily used loosely to communicate truths, where the felicity of loose talk is relative to the context of assessment as well as the context of use. I argue that while there is very good reason to believe that ‘know’ is a demanding term commonly used loosely, we (...) need not and should not conclude that loose use is assessment relative or that knowledge ascriptions are hardly ever true. (shrink)

The Reeh-Schlieder theorem asserts the vacuum and certain other states to be spacelike superentangled relative to local quantum fields. This motivates an inquiry into the physical status of various concepts of localization. It is argued that a covariant generalization of Newton-Wigner localization is a physically illuminating concept. When analyzed in terms of nonlocally covariant quantum fields, creating and annihilating quanta in Newton-Wigner localized states, the vacuum is seen to not possess the spacelike superentanglement that the Reeh-Schlieder theorem displays relative to (...) local fields, and to be locally empty as well as globally empty. Newton-Wigner localization is then shown to be physically interpretable in terms of a covariant generalization of the center of energy, the two localizations being identical if the system has no internal angular momentum. Finally, some of the counterintuitive features of Newton-Wigner localization are shown to have close analogues in classical special relativity. (shrink)

This paper presents two interpretations of the fiber bundle fonnalism that is applicable to all gauge field theories. The constructionist interpretation yields a substantival spacetime. The analytic interpretation yields a structural spacetime, a third option besides the familiar substantivalism and relationalism. That the same mathematical fonnalism can be derived in two different ways leading to two different ontological interpretations reveals the inadequacy of pure fonnal arguments.

This book emphasizes the compatibility of Aristotelianism, Austrian economics, and Ayn Rand's Objectivism, arguing that particular ideas from these areas can be integrated as a potential paradigm of human flourishing and happiness in a free society. It constructs an understanding from various disciplines into a clear, consistent, and systematic whole.

In Practical Reality, Jonathan Dancy argues that our reasons for action are not psychological states, but things we take to be facts about the world, and shows that the reasons themselves are not causes. Dancy concludes that intentional actions are not explained by beliefs and desires, and that explanations of action in terms of reasons are not causal explanations. I show that these further conclusions are unwarranted by sketching an alternative theory of reasons according to which what it is for (...) an action to be done for a reason is for certain beliefs and desires to cause the action. Our reasons for action are the contents of those beliefs and desires. This theory is not only compatible with the facts about reasons Dancy has established, but explains many things that Dancy’s theory does not account for. I make no claim here about the precise adequacy of the simplified theoretical definitions I present. My goal is to show that a systematic theory along these lines is a promising approach to understanding an important aspect of human nature. (shrink)

Grice’s Razor is a methodological principle that many philosophers and linguists have used to help justify pragmatic explanations of linguistic phenomena over semantic explanations. A number of authors in the debate over contextualism argue that an invariant semantics together with Grice’s (1975) conversational principles can account for the contextual variability of knowledge claims. I show here that the defense of Grice’s Razor found in these “Gricean invariantists,” and its use against epistemic contextualism, display all the problems pointed out earlier in (...) Davis (1998). The everyday variation in acceptable knowledge claims is better explained in terms of implicature than indexicality, but general conversational principles shed little light on whether ‘know’ is used hyperbolically, meiotically, or loosely in a context, although this issue is crucial in deciding what if anything ‘S knows p’ implicates. I present reasons favoring an account of the representative bank case in terms of loose use, making clear how they differ from Grice’s Razor. (shrink)

This chapter contains sections titled: Action Intentional vs Unintentional Action Autonomous Action Action for Reasons References Further reading.

Berg seeks to defend the theory that the meaning of a proper name in a belief report is its reference against Frege’s puzzle by hypothesizing that when substituting coreferential names in belief reports results in reports that seem to have different truth values, the appearance is due to the fact that the reports have different metalinguistic implicatures. I review evidence that implicatures cannot be calculated in the way Grice or Berg imagine, and give reasons to believe that belief reports do (...) not have the implicatures Berg attributes to them. I also argue that even if belief reports did have such implicatures, they would not explain why the belief reports in Frege’s puzzle seem to have different truth values. I point out that Berg has no reason to believe that Lois Lane believes Clark Kent is a reporter and Lois Lane believes Superman is a reporter are both true rather than both false, and that Leibniz’s Law cannot be used to defend substitutivity in belief reports because belief reports are not relational in the requisite way. Finally, I observe that some of the linguistic data Berg uses to argue for substitutivity in belief reports concerns the transparent interpretation of belief reports, whereas Frege’s puzzle concerns the opaque interpretation. (shrink)

In a novel move against Russellianism, Heck (2014) has argued that reports of the form S believes that p are semantically opaque on the grounds that there are no other means in English to report psychologically individuated beliefs, such as those Lois Lane reports using the names ‘Superman’ and ‘Clark Kent.’ I show that there are several other ways to meet this need. I focus on quotational reports of the form S believes “p,” which philosophers have overlooked or mischaracterized. I (...) argue that reports of this form are no more metalinguistic than those using the complementizer that. In both, the meaning of the report depends on the meaning, not the form, of the complement. Some distinguishing features of non-metalinguistic quotational reports are that their complements force “deictic shift” and have no transparent interpretation. Free direct speech and thought bubbles have the same properties. The “q-ascriptions” McCullagh (2017a) proposed to defend Russellianism against Heck are not in common use and on his account are unsuitably metalinguistic. The fact that quotational belief reports are opaque without being metalinguistic makes the Russellian thesis that the meaning of a name is its referent untenable, thereby undermining Russellianism about belief reports. (shrink)