Both scientists and children make important structural discoveries, yet their computational underpinnings are not well understood. Structure discovery has previously been formalized as probabilistic inference about the right structural form—where form could be a tree, ring, chain, grid, etc.. Although this approach can learn intuitive organizations, including a tree for animals and a ring for the color circle, it assumes a strong inductive bias that considers only these particular forms, and each form is explicitly provided as initial knowledge. Here we (...) introduce a new computational model of how organizing structure can be discovered, utilizing a broad hypothesis space with a preference for sparse connectivity. Given that the inductive bias is more general, the model's initial knowledge shows little qualitative resemblance to some of the discoveries it supports. As a consequence, the model can also learn complex structures for domains that lack intuitive description, as well as predict human property induction judgments without explicit structural forms. By allowing form to emerge from sparsity, our approach clarifies how both the richness and flexibility of human conceptual organization can coexist. (shrink)

This book is a succinct introduction to the orienting of attention.

This article documents and provides explanations for levels of and trends in earnings inequality, with a central focus on international differences in these outcomes. It concentrates on OECD countries, which are largely advanced industrialized nations, and typically have similar levels of labour productivity but often very different labour market institutions and changes in the supply of or demand for labour of various skill levels. As a result, one can use international differences to test hypotheses about the role of supply and (...) demand and institutions in influencing levels and trends in earnings inequality. The article first provides an analytical framework for understanding earnings inequality in which labour earnings are distinguished from wage rates. It then places inequality of wage rates in a supply and demand framework, augmented by consideration of labour market institutions. Next, after providing some data on the extent of earnings and wage inequality across countries and over time, it discusses evidence on the determinants of differences and changes in earnings inequality. (shrink)

According to grounded cognition, words whose semantics contain sensory-motor features activate sensory-motor simulations, which, in turn, interact with spatial responses to produce grounded congruency effects. Growing evidence shows these congruency effects do not always occur, suggesting instead that the grounded features in a word's meaning do not become active automatically across contexts. Researchers sometimes use this as evidence that concepts are not grounded, further concluding that grounded information is peripheral to the amodal cores of concepts. We first review broad evidence (...) that words do not have conceptual cores, and that even the most salient features in a word's meaning are not activated automatically. Then, in three experiments, we provide further evidence that grounded congruency effects rely dynamically on context, with the central grounded features in a concept becoming active only when the current context makes them salient. Even when grounded features are central to a word's meaning, their activation depends on task conditions. (shrink)

In response to Casasanto, Brookshire, and Ivry, we address four points: First, we engaged in conceptual replications of Brookshire, Casasanto, and Ivry, not direct replications. Second, we did not question the validity of Brookshire et al.'s results, nor the similar findings of other researchers, but instead explained divergent findings within an integrated theoretical framework. Third, challenges to the construct of automaticity, including ours, were widespread, long before Brookshire et al.'s article. Fourth, the planned comparisons that we reported tested our theoretical (...) claims and offered strong evidence for them. (shrink)

Depue & Collins's (D&C's) work relies on extrapolation from data obtained through studies in experimental animals, and needs support from studies of the role of dopamine (DA) neurotransmission in human behaviour. Here we review evidence from two sources: (1) studies of patients with Parkinson's disease and (2) positron emission tomography (PET) studies of DA neurotransmission, which we believe lend support to Depue & Collins's theory, and which can potentially form the basis for a true neurochemistry of personality.

Discussion of the ethics of forgoing medically provided nutrition and hydration tends to focus on adults rather than infants and children. Many appellate court decisions address the legal propriety of forgoing medically provided nutritional support of adults, but only a few have ruled on pediatric cases that pose the same issue.The cessation of nutritional support is implemented most commonly for patients in a permanent vegetative state ). An estimated 4,000 to 10,000 American children are in the permanent vegetative state, compared (...) to 10,000 to 25,000 adults. Yet the dearth of literature, case reports, and court decisions suggests that physicians and families of pediatric patients stop medically provided nutrition or seek court orders much less frequently. (shrink)

This study examined the differences in the level of physical fitness and academic performance among male middle-school children based on different body status categories. A total of 69 male children [age: 12.4 ± 0.7 years; body mass: 58.5 ± 7.2 kg; height: 1.62 ± 0.09 m; and body mass index : 22.4 ± 3.3 kg/m2] participated and were divided into BMI age-adjusted groups. Height, mass, BMI, stork test of static balance, 10 and 15 m sprint as an indicator for speed, (...) hand-grip strength test, agility T-half test, medicine ball throw, and the Yo-Yo Intermittent Recovery Test level 1 were assessed. School records were retrieved for grade point averages of mathematics, science, and Arabic. We found significant group differences regarding anthropometric, physical, and academic performance parameters. The largest difference correlation between parameters of different dimensions was found. In conclusion, the highest BMI group exhibited similar physical and academic performances than the lowest group. Thus, these data emphasize the importance and appropriateness to engage young Qatari schoolchildren in physical activity as it associates with superior academic performance. (shrink)

Sensorimotor learning refers to improvements that occur through practice in the performance of sensory-guided motor behaviors. Leveraging novel technical capabilities of an immersive virtual environment, we probed the component kinematic processes that mediate sensorimotor learning. Twenty naïve subjects performed a simulated marksmanship task modeled after Olympic Trap Shooting standards. We measured movement kinematics and shooting performance as participants practiced 350 trials while receiving trial-by-trial feedback about shooting success. Spatiotemporal analysis of motion tracking elucidated the ballistic and refinement phases of hand (...) movements. We found systematic changes in movement kinematics that accompanied improvements in shot accuracy during training, though reaction and response times did not change over blocks. In particular, we observed longer, slower, and more precise ballistic movements that replaced effort spent on corrections and refinement. Collectively, these results leverage developments in immersive virtual reality technology to quantify and compare the kinematics of movement during early learning of full-body sensorimotor orienting. (shrink)

En 1705, Wilhem Homberg, le principal chimiste de l’Académie royale des sciences, proposa une nouvelle théorie chimique selon laquelle le Soufre principe des corps mixtes était identique à la lumière. Il affirma par la suite que cette lumière corporelle était la seule source d’activité et de changement dans les substances matérielles. Cet article montre comment la théorie de Homberg s’élabora progressivement pendant de nombreuses années sous l’influence de ses observations et des résultats de ses expériences de laboratoire, ce qui nous (...) fournit un exemple de la manière selon laquelle un chimiste du début du XVIIIe siècle a pu développer une théorie raffinée grâce à l’interaction de la réflexion et de la manipulation. L’influence probable de la théorie de Homberg sur les fameuses « questions chimiques » de Newton est également signalée ici pour la première fois. Enfin l’article avance que nous comprendrons plus précisément l’histoire de la chimie si nous reconnaissons le caractère spécifique de la chimie et sa relative autonomie, plutôt que si nous cherchons à lui imposer des développements faciles et convenus tirés d’autres champs du savoir comme la philosophie ou la physique. (shrink)

DBS Think Tank IX was held on August 25–27, 2021 in Orlando FL with US based participants largely in person and overseas participants joining by video conferencing technology. The DBS Think Tank was founded in 2012 and provides an open platform where clinicians, engineers and researchers can freely discuss current and emerging deep brain stimulation technologies as well as the logistical and ethical issues facing the field. The consensus among the DBS Think Tank IX speakers was that DBS expanded in (...) its scope and has been applied to multiple brain disorders in an effort to modulate neural circuitry. After collectively sharing our experiences, it was estimated that globally more than 230,000 DBS devices have been implanted for neurological and neuropsychiatric disorders. As such, this year’s meeting was focused on advances in the following areas: neuromodulation in Europe, Asia and Australia; cutting-edge technologies, neuroethics, interventional psychiatry, adaptive DBS, neuromodulation for pain, network neuromodulation for epilepsy and neuromodulation for traumatic brain injury. (shrink)

Progressive supranuclear palsy is a movement disorder with prominent tau neuropathology. Brain diseases with abnormal tau deposits are called tauopathies, the most common of which is Alzheimer's disease. Environmental causes of tauopathies include repetitive head trauma associated with some sports. To identify common genetic variation contributing to risk for tauopathies, we carried out a genome-wide association study of 1,114 individuals with PSP and 3,247 controls followed by a second stage in which we genotyped 1,051 cases and 3,560 controls for the (...) stage 1 SNPs that yielded P ≤ 10-3. We found significant previously unidentified signals associated with PSP risk at STX6, EIF2AK3 and MOBP. We confirmed two independent variants in MAPT affecting risk for PSP, one of which influences MAPT brain expression. The genes implicated encode proteins for vesicle-membrane fusion at the Golgi-endosomal interface, for the endoplasmic reticulum unfolded protein response and for a myelin structural component. © 2011 Nature America, Inc. All rights reserved. (shrink)

This study aimed to investigate the relationships between physical fitness and academic performance in youth handball players of different BMI classifications. Thirty-three male handball players were recruited from the Qatar handball first league and were assigned to their BMI age-adjusted groups. Measurements included anthropometric data and body fat percentage, and physical performance tests: agility T-half test; squat jump, and countermovement jump, 10 and 15 m sprint; medicine ball throw. Aerobic capacity was evaluated using the Yo-Yo Intermittent Recovery Test level 1. (...) Academic achievement was assessed through school records of grades point average of Mathematics, Science and Arabic. None academic performance parameter and four physical performance parameters were different between BMI related groups. In 43% of performance parameters and all academic parameters, the normal weight group showed the highest performance level, whereas the overweight group had the best performance in both sprint tests. The obese group was only superior in the medicine ball throw, but not at the p 0.5) between academic and physical performance parameters was only found between Yo-Yo IR 1 and science. A relevant correlation were found between CMJ and BMI. The agility T-half test was correlated with CMJ and 10 m sprint. These findings suggest being overweight or obese are related to science academic performance among schoolchildren athletes in Qatar. Possibly, a normal BMI could positively influence academic performance. Physical education teachers, staff, and administrators should be cognizant that health promotion interventions improving composition may have the additional potential to improve dimensions of academic performance. (shrink)

Pancreatitis is a complex, progressively destructive inflammatory disorder. Alcohol was long thought to be the primary causative agent, but genetic contributions have been of interest since the discovery that rare PRSS1, CFTR and SPINK1 variants were associated with pancreatitis risk. We now report two associations at genome-wide significance identified and replicated at PRSS1-PRSS2 and X-linked CLDN2 through a two-stage genome-wide study. The PRSS1 variant likely affects disease susceptibility by altering expression of the primary trypsinogen gene. The CLDN2 risk allele is (...) associated with atypical localization of claudin-2 in pancreatic acinar cells. The homozygous CLDN2 genotype confers the greatest risk, and its alleles interact with alcohol consumption to amplify risk. These results could partially explain the high frequency of alcohol-related pancreatitis in men. © 2012 Nature America, Inc. All rights reserved. (shrink)

"...T S Eliot was unimpressed by Freud. Eliot preferred the more approachable Roger Vittoz. It was only Scofield Thayer, who in his prolonged therapy with Sigmund Freud can be said to have brought anything Freudian in the classically psychoanalytic sense to Modernism." This is from the review. The review of the book is contrarian as the book under review is. The salient points of the book are interrogated in this review.

La plupart des recherches entreprises sur la philosophie de Michel Foucault ont visé jusqu’à maintenant à définir et assigner son travail à une étiquette politique définie. Foucault est pour les uns anarchiste, pour les autres nihiliste ou encore simple militant de gauche. Ce qui est étonnant avec cet effort, c’est que malgré la multiplicité des lectures, elles peuvent toutes se justifier et trouver quelques appuis dans son oeuvre. Par contre, en entreprenant la recherchedu politique de cette façon, c’est-à-dire en posant (...) à Foucault la question programmatique du « ce qu’il faut faire », nous tombons dans un piège que lui-même a toujours souhaité éviter, celui d’« unidimensionnaliser » sa pensée. Mais alors, comment lire son oeuvre sans nous-mêmes appliquer cette morale d’État civil demandant à chaque philosophe ses papiers politiques? En quoi, si nous refusons cette question, la pensée de Foucault peut-elle demeurer une pensée politique? Notre thèse est la suivante : en examinant la manière avec laquelle Foucault ré????léchit le politique dans son cours au Collège de France Le Gouvernement de soi et des autres, nous p ouvons m ontrer c omment, vers la fin de sa vie, il a changé l’angle de la question. En effet, dans ce cours, l’activité politique n’est plus envisagée à partir de la question du « ce qu’il faut faire », mais à partir de l’expérience du pouvoir elle-même, c’est-àdire comment sommes-nous en mesure d’exercer le pouvoir sur les autres. La tâche du philosophe n’est donc plus celle du « donneur de leçon » pense Foucault dans ce cours, mais celle de faire de sa vie un exemple où parole et acte, discours et vérité sont intimement reliés. (shrink)

There is a striking difference, however, between the ways female and male modernists define and describe literal or figurative costumes. Balancing self against mask, true garment against false costume, Yeats articulates a perception of himself and his place in society that most other male modernists share, even those who experiment more radically with costume as metaphor. But female modernists like Woolf, together with their post-modernist heirs, imagine costumes of the mind with much greater irony and ambiguity, in part because women's (...) clothing is more closely connected with the pressures and oppressions of gender and in part because women have far more to gain from the identification of costume with self or gender. Because clothing powerfully defines sex roles, both overt and covert fantasies of transvestism are often associated with the intensified clothes consciousness expressed by these writers. But although such imagery is crucially important in works by Joyce, Lawrence, and Eliot on the one hand, and in works by Barnes, Woolf, and H. D. on the other, it functions very differently for male modernists from the way it operates for female modernists.Sandra M. Gilbert, professor of English at the University of California at Davis, is the author of Acts of Attention: The Poems of D.H. Lawrence and In the Fourth World; the coauthor, with Susan Gubar, of The Madwoman in the Attic: The Woman Writer and the Nineteenth-Century Literary Imagination, and its sequel, No Man's Land: The Woman Writer and the Twentieth-Century Literary Imagination. (shrink)

The British journalist Christopher Hitchens has recently noted that the extraordinary excitement created by l’affaire Pound, an excitement sustained for now some forty years, is partly the result of having no fewer than three debates going on whenever the poet’s legal situation and his consequent hospitalization are discussed. As Hitchens says, those questions are: “First, was Pound guilty of treason? If not, or even if so, was he mad? Third, was he given privileged treatment for either condition?”1 I propose to (...) discuss all three issues in a way that fairly reflects the fact that I am neither a physician nor a lawyer. What I know of the state of medical expertise, both today and in the period of time from 1943 to 1958 , leads me, as a layman, to believe that there is an enormous latitude of understanding among medical professionals as to the precise meaning of “insanity.” At one extreme, for some distinguished physicians, the term means almost nothing. They see it as a legal term and as therefore irrelevant to them; some of them follow the line of reasoning developed by Thomas Szasz over his long writing career, namely that “mental illness” if not illness in any ordinary sense of the term.2 For other medical practitioners, it does mean something, but only when it is redefined into much smaller subcategories and enriched with much more precise terminology, and when the given patient and his full range of circumstances are considered.What I know of the legal understanding of insanity is that there has been and is now little firm agreement about “insanity” or “madness.” Equally competent juries and courts have been able to set down findings that are more or less plausible on their face but do not seem to comport at all with each other. I tentatively conclude that whatever “insanity” now is in the United States, and whatever it was when Pound was found unfit to stand trial in 1945, the standard is not the lucid simplicity of the M’Naghten test, namely, the ability of the accused to understand the difference between “right” and “wrong.” Human mind, self-awareness, and motivations are vastly more complicated than such a test would imply. 1. Christopher Hitchins, “American Notes,” Times Literary Supplement, 21 Oct. 1983, p. 1160.2. See Thomas Szasz, Insanity for a synthesis of his ideas as formulated in some eighteen books. William M. Chace is professor of English and Vice Provost for Academic Planning and Development at Stanford University. He is author of The Political Identities of Ezra Pound and T. S. Eliot , Lionel Trilling: Criticism and Politics , and scholarly essays on writers including Wyndham Lewis, D. H. Lawrence, T. E. Lawrence, and James Joyce. He is now working on a study of the ways in which American culture in this century has been subjected to critical analysis. (shrink)

This study reflects on contemporary humanistic pedagogy by exploring the limits of the teachable. Revisiting the Bildungsroman, it studies the pedagogical relationship from the point of view of the mentor rather than of the young hero. Writers examined include Rousseau, Sterne, Goethe, Nietzsche, D. H. Lawrence, F. R. Leavis, and J. M. Coetzee.

The role of the environment in producing the correct classical limit in the Bohm interpretation of quantum mechanics is investigated, in the context of a model of quantum Brownian motion. One of the effects of the interaction is to produce a rapid approximate diagonalisation of the reduced density matrix in the position representation. This effect is, by itself, insufficient to produce generically quasi-classical behaviour of the Bohmian trajectory. However, it is shown that, if the system particle is initially in an (...) approximate energy eigenstate, then there is a tendency for the Bohmian trajectory to become approximately classical on a longer time-scale. The relationship between this phenomenon and the behaviour of the Wigner function post-decoherence is discussed. (shrink)

This paper will argue that there is no such thing as introspective access to judgments and decisions. I t won't challenge the existence of introspective access to perceptual and imagistic states, nor to emotional feelings and bodily sensations. On the contrary, the model presented in Section 2 presumes such access. Hence introspection is here divided into two categories: introspection of propositional attitude events, on the one hand, and introspection of broadly perceptual events, on the other. I shall assume that the (...) latter exists while arguing that the fonner doesn't . Section I makes some preliminary points and distinctions, and outlines the scope of the argument. Section 2 presents and motivates the general model of introspection that predicts a divided result. Section 3 provides independent evidence for the conclusion that judgments and decisions aren't introspectable. Section 4 then replies to a number of objections to the argument, the most important of which is made from the perspective of so-called "dual systems theories" of belief formation and decision making, The upshot is a limited form of eliminativism about introspection, in respect of at least two core categories of propositional attitude. (shrink)

A critical study of the "shudder before God", the "shudder before death", and the "shudder before the other person", favoring Sartre. The author's position is largely derived from the nature-mysticism of D. H. Lawrence. His own unscrutinized assumptions are so thoroughly "aesthetic" that the religious passion of Kierkegaard, the ontological passion of Heidegger, and the ethical passion of Sartre appear in his book somewhat distorted. --L. M.