Cohen Kadosh, Tzelgov, and Henik [Cohen Kadosh, R., Tzelgov, J., and Henik, A. (2008). A synesthetic walk on the number line: The size effect. Cognition, 106, 548-557] present a new paradigm to probe properties of the mental number line. They describe two experiments which they argue to be inconsistent with the exact small number model proposed by Verguts, Fias, and Stevens [Verguts, T., Fias, W., Stevens, M. (2005). A model of exact small-number representation. Psychonomic Bulletin and Review, 12, (...) 66-80]. We discuss the data, assumptions, and conclusions of Cohen Kadosh et al.'s paper in relation to existing models of numerical cognition. (shrink)

Recent years have witnessed an enormous increase in behavioral and neuroimaging studies of numerical cognition. Particular interest has been devoted toward unraveling properties of the representational medium on which numbers are thought to be represented. We have argued that a correct inference concerning these properties requires distinguishing between different input modalities and different decision/output structures. To back up this claim, we have trained computational models with either symbolic or nonsymbolic input and with different task requirements, and showed that this allowed (...) for an integration of the existing data in a consistent manner. In later studies, predictions from the models were derived and tested with behavioral and neuroimaging methods. Here we present an integrative review of this work. (shrink)

A central controversy in cognitive science concerns the roles of rules versus similarity. To gain some leverage on this problem, we propose that rule‐ versus similarity‐based processes can be characterized as extremes in a multidimensional space that is composed of at least two dimensions: the number of features (Pothos, 2005) and the physical presence of features. The transition of similarity‐ to rule‐based processing is conceptualized as a transition in this space. To illustrate this, we show how a neural network model (...) uses input features (and in this sense produces similarity‐based responses) when it has a low learning rate or in the early phases of training, but it switches to using self‐generated, more abstract features (and in this sense produces rule‐based responses) when it has a higher learning rate or is in the later phases of training. Relations with categorization and the psychology of learning are pointed out. (shrink)

Why can’t we keep as many items as we want in working memory? It has long been debated whether this resource limitation is a bug or instead a feature. We propose that the resource limitation is a consequence of a useful feature. Specifically, we propose that flexible cognition requires time-based binding, and time-based binding necessarily limits the number of memoranda that can be stored simultaneously. Time-based binding is most naturally instantiated via neural oscillations, for which there exists ample experimental evidence. (...) We report simulations that illustrate this theory and that relate it to empirical data. We also compare the theory to several other resource theories. (shrink)

Comments on an article by Feigenson et. al.(see record 2004-18473-007). Reviewing behavioral and neural data in children, humans and animals, Feigenson and colleagues distinguish two core systems for number representation. One system represents number in an exact way but has a fixed upper limit; the other system has no size limit but represents number only approximately. Both systems are claimed to have a phylogenetic origin and to constitute the basis for ontogenetic development. As such, each system's representational principles are reflected (...) in adult human performance: subitizing is ascribed to the exact system whereas symbolic number processing is based on a mapping to the approximate system. This last assumption is motivated by the robust finding that symbolic numbers are more difficult to discriminate with increasing size (the 'size effect'). However, it remains to be shown how this mapping can reconcile the inherently exact nature of a symbolic system with signatures of approximate processing such as the size effect. (PsycINFO Database Record (c) 2005 APA, all rights reserved). (shrink)

Rips et al.'s arguments for rejecting basic number representations as a precursor of the natural number system are exclusively based on analog number coding. We argue that these arguments do not apply to place coding, a type of basic number representation that is not considered by Rips et al.

Comments on an article by Feigenson et. al.(see record 2004-18473-007). Reviewing behavioral and neural data in children, humans and animals, Feigenson and colleagues distinguish two core systems for number representation. One system represents number in an exact way but has a fixed upper limit; the other system has no size limit but represents number only approximately. Both systems are claimed to have a phylogenetic origin and to constitute the basis for ontogenetic development. As such, each system's representational principles are reflected (...) in adult human performance: subitizing is ascribed to the exact system whereas symbolic number processing is based on a mapping to the approximate system. This last assumption is motivated by the robust finding that symbolic numbers are more difficult to discriminate with increasing size (the 'size effect'). However, it remains to be shown how this mapping can reconcile the inherently exact nature of a symbolic system with signatures of approximate processing such as the size effect. (PsycINFO Database Record (c) 2005 APA, all rights reserved). (shrink)

We challenge the arguments of Cohen Kadosh & Walsh (CK&W) on two grounds. First, interactions between number form (e.g., notation, format, modality) and an experimental factor do not show that the notations/formats/modalities are processed separately. Second, we discuss evidence that numbers are coded abstractly, also when not required by task demands and processed unintentionally, thus challenging the authors' dual-code account.

The nature of unconscious information processing is a heavily debated issue in cognitive science, and neuroscience. Traditionally, it has been thought that unconscious cognitive processing is restricted to knowledge that is strongly prepared by conscious processes. In three experiments, we show that the task that is performed consciously can also be applied unconsciously to items outside the current task set. We found that a same–different judgment of two target stimuli was also performed on two subliminally presented prime stimuli. This was (...) true for target and prime stimuli from entirely different categories, as well as for prime and target stimuli at different levels of abstraction. These results reveal that unconscious processing can generalize more widely than previously accepted. (shrink)

The nature of unconscious information processing is a heavily debated issue in cognitive science , and neuroscience . Traditionally, it has been thought that unconscious cognitive processing is restricted to knowledge that is strongly prepared by conscious processes . In three experiments, we show that the task that is performed consciously can also be applied unconsciously to items outside the current task set. We found that a same–different judgment of two target stimuli was also performed on two subliminally presented prime (...) stimuli. This was true for target and prime stimuli from entirely different categories, as well as for prime and target stimuli at different levels of abstraction. These results reveal that unconscious processing can generalize more widely than previously accepted. (shrink)

Routine action sequences critically rely on neural mechanisms maintaining contextual and temporal information to disambiguate similar tasks (e.g. making coffee or tea). In this study we show the involvement of areas in temporal and lateral prefrontal cortices in maintaining temporal and contextual information for the execution of hierarchically‐organized action sequences.

An important approach to understand how the brain gives rise to consciousness is to probe the depth of unconscious processing, thus to define the key features that cause conscious awareness. Here, we investigate the possibility for subliminal stimuli to shape the context for unconscious processing. Context effects have generally been assumed to require consciousness. In the present experiment, unconscious context processing was investigated by looking at the impact of the context on the response activation elicited by a subliminal prime. We (...) compared the effects of the same subliminal prime on target processing when the prime was embedded in different unconscious contexts. Results showed that the same prime can evoke opposite responses depending on the unconscious context in which it is presented. Taken together, the results of this study show that context effects can be unconscious. (shrink)

Many individuals have miserable work lives, in which they must toil away at mind-numbing yet exhausting tasks for hours on end, being ordered about by their superiors, perhaps with few guarantees that this source of income will persist for very long. However, this is only half of the story: what is centrally important is that many of those who endure these conditions are denied a fair wage in return for the burdens that they bear. In this article, I reflect on (...) the significance of this fact in order to argue for the evaporation thesis. This thesis holds that individuals’ claims to particular employment-related protections from their government disappear as their earnings increase. In the course of defending this position, I explore the moral difference an employee's wage offer makes to the work conditions that we can expect her to accept, including why there are limits to the role that cash can play here. (shrink)

Around the world, the population is ageing in ways that pose new challenges for healthcare providers. To date these have mostly been formulated in terms of challenges created by increasing costs, and the focus has been squarely on life-prolonging treatments. However, this focus ignores the ways in which many older people require life-enhancing treatments to counteract the effects of physical and mental decline. This paper argues that in doing so it misses important aspects of what justice requires when it comes (...) to older people. (shrink)

Rene Descartes had a remarkably short working life, yet his contribution to philosophy and physics have endured to this day. He is perhaps best known for his statement, "Cogito, ergo sum," the cornerstone of his metaphysics. Descartes did not intend the metaphysics to stand apart from his scientific work, which included important investigations into physics, mathematics, and optics. In this book, Sorell shows that Descarates was, above all, an advocate and practitioner of the new mathematical approach to physics, and that (...) he developed his philosophies to support his discoveries in the sciences. (shrink)

The idea to utilise cognitive neuroscientific research for educational purposes is known as Mind-Brain Education or Educational Neuroscience. Despite some calls for an uncritical endorsement of such an agenda, a growing number of educational scholars argue that it must remain impossible to translate neurological descriptions into mental or educationally relevant descriptions. This paper takes these well-established arguments further by not only focusing upon these different levels of description but going beyond this issue to assess the theoretical foundations of cognitive science (...) as a functional theory of the mind. With relevance to education it is argued that because of its functional character a cognitive-psychological approach to education suffers from an inherent blind spot regarding the actor’s feelings and motivations. The paper concludes with the claim that, because of this experiential poverty, any cognitive neuroscientific approach must face severe limitations when utilised for educational purposes. (shrink)

Since 1989, widely circulating statistics on gay teen suicide in the United States have acted as catalysts for institutional reforms, scientific research, and the creation of an identity category “gay youth.” While one figure has been replicated scientifically, these numbers originated not from a scientific research study but as risk estimates developed by a social worker and published in a government document. Many people within the public took up these original numbers, attributing their author the status of scientific researcher. In (...) effect, the numbers became “black boxed,” often traveling without citation. Drawing on Ian Hacking’s “dynamic nominalist” perspective, this article utilizes interviews with the author of these statistics and other key claimants, along with textual analysis, to trace the origins, uptake, and effects of these figures. While making vital policy contributions, the numbers have led to some ironic consequences including the fostering of gay youth identification with suicide as a potential correlate of their identity and the potential antigay redeployment of decontextualized numbers. They have also led to a reaction in the form of “resilience” narratives. (shrink)

Credentialism refers to the practice of hiring or promoting applicants on the basis of their educational qualifications. In this paper, we argue that this can amount to wrongful discrimination against the less qualified. A standard way to defend credentialism appeals to the fact that it minimizes the costs of production. We argue that this argument has unacceptable implications in some cases involving disability- and gender-based discrimination. We claim that, once we appropriately revise this argument, credentialism is revealed to be similarly (...) wrongfully discriminatory. We then consider two objections and draw some preliminary lessons for policymaking. (shrink)

How wrong is it to deceive someone into sex by lying, say, about one's profession? The answer is seriously wrong when the liar's actual profession would be a deal breaker for the victim of the deception: this deception vitiates the victim's sexual consent, and it is seriously wrong to have sex with someone while lacking his or her consent.

Scientists are seekers of truth; but where science breaks into the everyday world should they be held accountable for the outcome of their actions? The contributors to this volume believe that scientists are more than mere cogs in a machine - science, technology and politics are inseparable. Part 1 describes current scientific practice from three personal perspectives; part 2 looks at the ways in which science, society and the environment could interact given the chance; and part 3 examines the more (...) general aspects of Western science and their relevance to our relationship with the environment, society and all global issues. (shrink)

Healthcare ethics has to date had very little to say about the treatment of chronic illness. That is problematic. Chronic illness differs from other illnesses in that: 1. in most cases it cannot be cured; 2. patients can live with it for many years; and 3. its day to day management is typically carried out, not by healthcare professionals, but by the patient and/or members of their family. These features problematise key distinctions that underlie much existing work in healthcare ethics (...) — including those between beneficence and autonomy, between treatment and prevention, and between the recipient and provider of treatment. They also raise ethical questions that have not to date been addressed in any detail — including what healthcare professionals should do when patients are managing their illness poorly, or when changes occur that affect their patients. For these reasons chronic illness provides a lens through which to challenge the adequacy of existing approaches to healthcare ethics, exposing the gaps and false assumptions built into them. In doing so it also provides the materials to build a more philosophically adequate account of healthcare professionals’ moral obligations than exists to date. Providing such an account is the aim of this monograph. (shrink)

Our successful engagement with the world is plausibly underwritten by our sensitivity to affordances in our immediate environment. The considerable literature on affordances focuses almost exclusively on affordances for bodily actions such as gripping, walking or eating. I propose that we are also sensitive to affordances for mental actions such as attending, imagining and counting. My case for this ‘Mental Affordance Hypothesis’ is motivated by a series of examples in which our sensitivity to mental affordances mirrors our sensitivity to bodily (...) affordances. Specifically, subjects perceive opportunities to perform a mental action and their doing so leads, under the right conditions, to the automatic preparation of that action. I conclude by sketching a mental affordance research program that would reinforce my case for the Mental Affordance Hypothesis and establish its ramifications for a number of debates across philosophy and psychology. (shrink)

Nearly everyone prefers pain to be in the past rather than the future. This seems like a rationally permissible preference. But I argue that appearances are misleading, and that future-biased preferences are in fact irrational. My argument appeals to trade-offs between hedonic experiences and other goods. I argue that we are rationally required to adopt an exchange rate between a hedonic experience and another type of good that stays fixed, regardless of whether the hedonic experience is in the past or (...) future. (shrink)

The scope of someone's consent is the range of actions that they permit by giving consent. The Scope of Consent investigates the under-explored question of which normative principle governs the scope of consent. To answer this question, the book's investigation involves taking a stance on what constitutes consent. By appealing to the idea that someone can justify their behaviour by appealing to another person's consent, Dougherty defends the view that consent consists in behaviour that expresses a consent-giver's will for how (...) a consent-receiver behaves. The ultimate conclusion of the book is that the scope of consent is determined by certain evidence that bears on the appropriate interpretation of the consent. (shrink)

You are morally permitted to save your friend at the expense of a few strangers, but not at the expense of very many. However, there seems no number of strangers that marks a precise upper bound here. Consequently, there are borderline cases of groups at the expense of which you are permitted to save your friend. This essay discusses the question of what explains ethical vagueness like this, arguing that there are interesting metaethical consequences of various explanations.

The anglophone philosophy profession has a well-known problem with gender equity. A sig-nificant aspect of the problem is the fact that there are simply so many more male philoso-phers than female philosophers among students and faculty alike. The problem is at its stark-est at the faculty level, where only 22% - 24% of philosophers are female in the United States (Van Camp 2014), the United Kingdom (Beebee & Saul 2011) and Australia (Goddard 2008).<1> While this is a result of the (...) percentage of women declining at each point through-out the standard career trajectory, recent large-scale studies in the United States (Paxton et al. 2012) and Australia (Goddard et al. 2008) have identified a key drop-off point as the transi-tion between taking introductory classes and majoring in philosophy. So why do dispropor-tionately few female students choose to major in philosophy? (shrink)

To develop a theoretical framework for drawing moral distinctions between instances of sexual misconduct, I defend the “Ameliorative View” of consent, according to which there are three possibilities for what effect, if any, consent has: “fully valid consent” eliminates a wronging, “fully invalid consent” has no normative effect, and “partially valid consent” has an ameliorative effect on a wronging in the respect that it makes the wronging less grave. I motivate the view by proposing a solution to the problem of (...) characterizing the moral effect of consent that is given in response to minor coercion. (shrink)