The effect of nontargets on the identification of targets in the location-cuing paradigm was investigated in order to determine whether observers consistently allocate their attention to a validly cued location and whether the effect of nontargets is to facilitate or to inhibit performance. In four experiments, the effects of a single matching nontarget or a single nonmatching nontarget were compared. In each experiment, it was shown that observers consistently allocate their attention to a cued location when a precue appears and (...) that performance is inhibited more by nonmatching nontargets in the display than it is facilitated by matching nontargets. (shrink)

The burden on intellectuals to define and account for their social role as well as their philosophical and historical position has never been so painfully borne as in the modern age. From the First World War to the advent of the Second, Europe saw its writers, artists and academics struggle to integrate their work, specifically the critique of a capitalist social order and its positivist ideology, and their own personal involvement in that society. The inter-war decades were ones of experimentation (...) and disappointment, the result of a quest for many gods, all inevitably destined to fail. In discussing one intellectual's journey to God, a search which pervaded every aspect of Simone Weil's work and life, we gain insight into the intellectual trap of absolutism to which this generation was particularly prone. (shrink)

Ethical concerns about randomising persons to a no-treatment arm in the context of Ebola epidemic led to consideration of alternative designs. The stepped wedge design, in which participants or clusters are randomised to receive an intervention at different time points, gained popularity. Common arguments in favour of using this design are when an intervention is likely to do more good than harm, all participants should receive the experimental intervention at some time point during the study and the design might be (...) preferable for practical reasons. We examine these assumptions when considering Ebola vaccine research. First, based on the claim that a stepped wedge design is indicated when it is likely that the intervention will do more good than harm, we reviewed published and ongoing SW trials to explore previous use of this design to test experimental drugs or vaccines, and found that SW design has never been used for trials of experimental drugs or vaccines. Given that Ebola vaccines were all experimental with no prior efficacy data, the use of a stepped wedge design would have been unprecedented. Second, we show that it is rarely true that all participants receive the intervention in SW studies, but rather, depending on certain design features, all clusters receive the intervention. Third, we explore whether the SW design is appealing for feasibility reasons and point out that there is significant complexity. In the setting of the Ebola epidemic, spatiotemporal variation may have posed problematic challenges to a stepped wedge design for vaccine research. Finally, we propose a set of points to consider for scientific reviewers and ethics committees regarding proposals for SW designs. (shrink)

In lieu of an abstract, here is a brief excerpt of the content:Russell's Naturalistic Turn 37 INTRODUCTION L RUSSELL'S NATURALISTIC TURN RUSSELI.?S NATURALISTIC TURN NED S. GARVIN Philosophy I Albion College Albion, MI 49224 I Quine, Ontological Relativity (New York: Columbia U. P., 1969), p. 83. 1 Russell advocated this hypothetical acceptance of science much earlier, e.g., in AMa, pp. 398-9. Here we have many of the hallmarks of naturalized epistemology: (I) fallibilism, (2) the "best theory" account of science, (...) (3) the view that "knowing" is a natural phenomenon not confined to humans, and (4) the embedding of epistemology in behavioural psychology. But in 1940 Russell was a foundationalist (though an increasingly moderate one) who insisted that normative, or as he called it, "critical" epistemology must be distinguished from natural epistemology, and that critical epistemology is philosophically more important: "Within its limitations, theory of knowledge of the above sort is legitimate and In the nrst form of theory of knowledge, we accept the scientific account of the world, not as certainly true, but as the best at present available. The world, as presented by science, contains a phenomenon caIled "knowing", and theory of knowledge, in its first form, has to consider what sort of phenomenon this is. Viewed from the outside, it is, to begin with, a characteristic of living organisms, which is (broadly speaking) increasingly displayed as the organism becomes more complex. (Pp. 12-13)2 Both knowledge and error, at this stage, are observable relations between the behaviour of the organism and the facts of the environment. (P. 14) Quine argued that traditional justification requires non-scientific propositions that are more secure than scientific propositions, and we see there are none: science is providing the best account of the world and our knowledge of it. Though we abandon the attempt to justify science, we still attempt to understand it for nearly the same reasons that always motivated epistemology: "in order to see how evidence relates to theory, and in what ways one's theory of nature transcends any available evidence".I Russell contemplated a naturalistic turn of his own in 1943, shortly after writing An Inquiry into Meaning and Truth and nearly twentyfive years before Quine's landmark address. In the introduction to his Inquiry Russell claims that there are "two different inquiries, both important, and each having a right to the name 'theory of knowledge '" (IM~, p. 12). The first is recognizably natural epistemology: n.s. 11 (summer 1991): 36-S1.SSN 0036-016p ru•••II: the Journal of the Bertrand Russell Archives McMaster University Library Press w. V. Quine's address to the Fourteenth International Congress of Philosophy in 1968, published a year later as "Epistemology Naturalized " in Ontological Relativity and Other Essays, is a landmark of recent epistemology, marking the turn from traditional critical epistemology to a descriptive epistemology firmly embedded within natural science. I n 1943 Bertrand Russell wrote a little-known, three-page document he titled "Project of Future Work". It outlines the descriptive project of examining non-demonstrative inference that eventually becomes the focal point of Human Knowledge: Its Scope and Limits. More remarkably, this document anticipates many salient features of naturalized epistemology, e.g., Russell argues that (I) an answer to scepticism is futile, we cannot justify scientific method; (2) the Humean Predicament arises from a traditional insistence on an unrealistic, demonstrative canon of justification; (3) non-demonstrative, fallible inference is already firmly embedded in scientific practice as a canon of inference, and should augment the demonstrative canon; and (4) the primary epistemic· problem is descriptive: in what circumstances does scientific method allow us to infer the existence of something unobserved from what we observe. These claims, in the wake of An Inquiry into Meaning and Truth, suggest that Russell was on the verge of his own naturalistic turn. I argue that, despite striking anticipations of naturalized epistemology, Russell develops his descriptive project within a more traditional, critical epistemic perspective. 38 NED S. GARVIN important. But there is another kind of theory of knowledge which goes deeper and has, I think, much greater importance" (IMT;., p. 14). Russell observes that behavioural psychologists omit that they are fallible observers, and this fallibility introduces doubt into their results. Further, naive... (shrink)

Facial information is a powerful channel for human-to-human communication. Characteristically, faces can be defined as biological objects that are four-dimensional (4D) patterns, whereby they have concurrently a spatial structure as well as temporal dynamics. The spatial characteristics of facial objects possess three dimensions (3D), namely breadth, height and importantly, depth. The temporal properties of facial objects are defined by how a 3D facial structure evolves dynamically over time; where time is referred to as the fourth dimension (4D). Our entire perspective (...) of another’s face, whether it be social, affective or cognitive perceptions, is therefore built on a combination of 3D and 4D visual cues. Counterintuitively, over the past few decades of experimental research in psychology, facial stimuli have largely been presented to participants as a spatial pattern that has been flattened into two dimensions (2D), while remaining largely static. The following review aims to advance and update facial researchers, on the recent revolution in computer-generated, realistic 4D facial models produced from real-life human subjects. We delve in-depth to summarize recent studies which have utilized facial stimuli that possess 3D structural cues (geometry and depth) and 4D temporal cues (3D structure + dynamic viewpoint and movement). In sum, we have found that higher-order perceptions such as identity, gender, ethnicity, emotion and personality, are critically influenced by the 4D characteristics embedded within natural human faces. In future, it is recommended that facial stimuli incorporate the 4D space-time perspective with the proposed time-resolved methods. (shrink)

Endogenous and exogenous processes of attention have been inferred with different types of precues used in allocation of attention to a target location. In the present research, a comparison was made between the typical peripheral single-element precue (SEP), a central precue, and a multiple-element precue (MEP) in order to further understanding of the processes involved in allocation of attention. Two precues were used on each trial in these experiments. An abrupt-onset precue appeared with an SEP, an MEP, or a central (...) precue and was followed 50 or 300 ms later by a screen containing a target and two distractor characters. The abrupt-onset precue and the other precue each could be valid or invalid in indicating the location of the target, as in the study by Juola, Koshino, and Warner (1995). Response times to the targets showed that validity effects of the abrupt-onset precue and the MEP or central precue were additive, whereas those of the abrupt-onset precue and the SEP were interactive. These data suggest that, like a central precue, an MEP is an endogenous precue that guides conscious control of attention and has its attentional effects at a different processing level from an SEP, which is an exogenous precue and may compete for attentional resources with an abrupt-onset precue. (shrink)

A partir da implantação da República, surgiu um movimento de intelectuais que procurou congregar e dinamizar num esforço comum os pensadores de várias áreas do conhecimento, através da revista A Águia, tendo em vista uma nova ordem moral e cívica dentro do ideal democrático. Procurámos dar a conhecer as linhas principais que consubstanciaram o espaço aberto pela revista, as influências recebidas e os debates que a animaram.

Recently, an increasing number of researchers in different parts of the world have been studying childhood from a point of view that highlights children who are considered “peripheral” – far from the ideal model associated with Western countries. We began with the intention of getting to know African children in Angola, informed by the belief that the preservation of languages is important in maintaining social knowledge and traditions. This text describes a preliminary study carried out in a culturally rich location (...) with strong traditions, but which is also marked by processes of cultural denial and devaluation. According to Ndombele and Timbane (2020), most Angolan children learn Portuguese at age seven, when they start school, especially in rural areas. This fact hinders the literacy learning process, and presents the risk of the disappearance of some native languages. Many schools teach children only in Portuguese. When visiting a school in Ganda, a rural area of Benguela, we found a group of children who, primarily through the games they played, keep the Umbundu language alive, and with that the identity and culture of their ancestors. Building on this, these children and their teachers created a syllable association game based on the music sung as they played. The game had two modalities - in the Umbundu language and in the Portuguese language – and functioned as a bilingual pedagogical tool. In the initial moment of offering the game for testing with the children, it was discovered that by singing the song of the game and discussing the possible solutions by themselves, they were able to make correct associations of the syllables in Umbundu, which they then translated into Portuguese. Thus, a resource was created together with the teachers, which, in addition to valuing the native language of the population, allowed the use of children's knowledge to create a didactic resource. In addition, it was possible to encounter the concept of childhood in the current world, deconstructing the idea of a single and ideal model, especially in light of those children who bring habits from home that do not always harmonize with the school routine, and often clash with Euro/Western model, which is based on age separation of classes as a requirement to guarantee learning, and tend to devalue other exchanges that help children learn. (shrink)

The nature of the relationship between the two types of meiotic recombination outcomes, exchange (crossing‐over) and simple gene conversion, has been debated for years. I here propose that these two types of events are not necessarily causally related and hypothesize that the primary role of events detected as simple gene conversion is in the recognition of homology during synapsis.

Following the COVID-19 pandemic, many countries worldwide have put lockdowns in place to prevent the virus from spreading. Evidence shows that lockdown measures can affect mental health; it is, therefore, important to identify the psychological characteristics making individuals more vulnerable. The present study aimed, first, to identify, through a cluster analysis, the psychological attributes that characterize individuals with similar psychological responses to the COVID-19 home confinement; second, to investigate whether different psychological characteristics, such as personality traits, alexithymia, and resilience, specifically (...) influence anxiety, stress, and depression, depending on the scope of the confinement. We analyzed data from 393 participants who completed an online survey on their experiences during two different phases of the Italian lockdown, characterized by more or less strict measures of confinement. Two clusters were identified which included participants reporting a better (+ER) and worse (−ER) emotional response to the lockdown, respectively. Individuals in the −ER group showed lower emotional stability, resilience, and higher alexithymia. Moreover, even if lifting part of the restrictions decreased psychological distress among all participants, a reduction in perceived stress was observed only among individuals with high resilience. Finally, personality traits, alexithymia, and resilience differently affected depression, anxiety, and stress. Our results suggest that different psychological interventions should be planned depending on the context: mental health professionals should focus on enhancing the individuals’ coping strategies to alleviate stress in emergencies, while long-term intervention aiming at alleviating anxiety and depressive symptoms should focus on alexithymic tendencies and personality constructs. (shrink)

Este artigo aborda a sociabilidade dos espaços de lazer popular carioca, na virada do séc. XIX para o séc. XX, identificando as representações que influenciaram a história e memória social de cidade. Evidencia-se aquilo que envolve a comensalidade – a refeição, o alimento, o lugar de comer/beber – como elementos de vinculação e cultura através de trocas simbólicas. Lembrados por Hobsbawm (1984) de que os costumes são uma tradição inventada - e reinventada, observa-se as referências e estilos das variações destes (...) espaços de lazer popular - das boticas modernas aos botequins contemporâneos. Abordaremos as referências da invenção do restaurante francês que influenciaram tais espaços e o imaginário cultural carioca. (shrink)

The situation of asylum seekers confined under deportation orders can expose caregivers to major clinical and organisational ethics issues. To help caregivers and healthcare organisations find ethical guidance, I reviewed the challenges of access to care and analysed the health and socio-political data to understand the ethical and logistical issues they face in these situations. My research shows that the situation of these patients raises issues of law, equity and distributive justice, and that there is a wide gap in knowledge (...) about these situations and the resources available. This exploratory study shows that independent doctors, independent community resources and hospitals are the resources best placed to meet the care needs of refused asylum seekers, and that there is an urgent need to raise awareness and train caregivers in these issues. (shrink)