Sense of Agency (SoA) is the subject of growing attention. It corresponds to the capacity to claim authorship over an action, associate specific consequences with a specific action, and it has been claimed to be a key point in the development of consciousness. It can be measured using the Sense of Agency Scale (SoAS), originally proposed by Tapal et al. (2017), who distinguished it into two-factor: Sense of Positive Agency (SoPA) and Sense of Negative Agency (SoNA). This study reports on (...) the first adaptation of the SoAS into another language, French. For this French version of the Sense of Agency Scale (F-SoAS), we analyzed responses from a sample of 517 native French-speakers. Our results indicate that the scale has good psychometric properties. Factor analysis confirm the same two-factor model as Tapal et al. (2017). However, some items were removed due to insufficient loadings with factors, leading to a short version of the scale (7-item). Furthermore, we observed gender differences that are consistent with findings in the literature. Specifically, women report higher SoNA scores and lower SoPA scores than men. We conclude by discussing possible uses and future directions for the scale. (shrink)

A sense of agency (SoA) is the experience of subjective awareness regarding the control of one’s actions. Humans have a natural tendency to generate prediction models of the environment and adapt their models according to changes in the environment. The SoA is associated with the degree of the adaptation of the prediction models, e.g., insufficient adaptation causes low predictability and lowers the SoA over the environment. Thus, identifying the mechanisms behind the adaptation process of a prediction model related to the (...) SoA is essential for understanding the generative process of the SoA. In the first half of the current study, we constructed a mathematical model in which the SoA represents a likelihood value for a given observation (sensory feedback) in a prediction model of the environment and in which the prediction model is updated according to the likelihood value. From our mathematical model, we theoretically derived a testable hypothesis that the prediction model is updated according to a Bayesian rule or a stochastic gradient. In the second half of our study, we focused on the experimental examination of this hypothesis. In our experiment, human subjects were repeatedly asked to observe a moving square on a computer screen and press a button after a beep sound. The button press resulted in an abrupt jump of the moving square on the screen. Experiencing the various stochastic time intervals between the action execution button-press) and the consequent event square jumping caused gradual changes in the subjects' degree of their SoA. By comparing the above theoretical hypothesis with the experimental results, we concluded that the update (adaptation) rule of the prediction model based on the SoA is better described by a Bayesian update than by a stochastic gradient descent. (shrink)

Here I compare two accounts of metaphysical indeterminacy (MI): first, the 'meta-level' approach described by Elizabeth Barnes and Ross Cameron in the companion to this paper, on which every state of affairs (SOA) is itself precise/determinate, and MI is a matter of its being indeterminate which determinate SOA obtains; second, my preferred 'object-level' determinable-based approach, on which MI is a matter of its being determinate---or just plain true---that an indeterminate SOA obtains, where an indeterminate SOA is one whose constitutive object (...) has a determinable property, but no unique determinate of that determinable. In S1, I first note an important difference between our accounts, concerning whether MI is taken to induce propositional indeterminacy; in S2, I highlight and defend certain advantages of my account; in S3, I address certain of Barnes and Cameron's objections to my account. (shrink)

Schizophrenia is associated with a series of visual perception impairments, which might impact on the patients’ every day life and be related to clinical symptoms. However, the heterogeneity of the visual disorders make it a challenge to understand both the mechanisms and the consequences of these impairments, i.e., the way patients experience the outer world. Based on earlier psychiatry literature, we argue that issues regarding time might shed a new light on the disorders observed in patients with schizophrenia.We will briefly (...) review the mechanisms involved in the sense of time continuity and clinical evidence that they are impaired in patients with schizophrenia.We will then summarize a recent experimental approach regarding the coding of time-event structure in time, namely the ability to discriminate between simultaneous and asynchronous events. The use of an original method of analysis allowed us to distinguish between explicit and implicit judgments of synchrony.We showed that for SOAs below 20ms neither patients nor controls fuse events in time. On the contrary subjects distinguish events at an implicit level even when judging them as synchronous. In addition, the implicit responses of patients and controls differ qualitatively. It is as if controls always put more weight on the last occurred event, whereas patients have a difficulty to follow events in time at an implicit level. In patients, there is a clear dissociation between results at short and large asynchronies, that suggest selective mechanisms for the implicit coding of time-event structure. These results might explain the disruption of the sense of time continuity in patients.We argue that this line of research might also help us to better understand the mechanisms of the visual impairments in patients and how they see their environment. (shrink)

Managing aggression in mental health hospitals is an important and challenging task for clinical nursing staff. A majority of studies focus on the perspective of clinicians, and research mainly depicts aggression by referring to patient-related factors. This qualitative study investigates how aggression is communicated in forensic mental health nursing records. The aim of the study was to gain insight into the discursive practices used by forensic mental health nursing staff when they record observed aggressive incidents. Textual accounts were extracted from (...) the Staff Observation Aggression Scale-Revised (SOAS-R), and Fairclough’s Critical Discourse Analysis was used to identify short narrative entries depicting patients and staffs in typical ways. The narratives contained descriptions of complex interactions between patient and staff that were linked to specific circumstances surrounding the patient. These antecedents, combined with the aggression incident itself, created stereotyping representations of forensic psychiatric patients as deviant, unpredictable and dangerous. Patient and staff identities were continually (re)produced by an automatic response from the staff that was solely focused on the patient’s behavior. Such response might impede implementation of new strategies for managing aggression. (shrink)

. In this paper, we consider the nature of recent corporate abuses both in the U.S. and in Europe, and how globalization has had an impact on amplifying their consequences. We discuss the rules-based and principles-based remedies that have been proposed in each region, respectively. With a focus on the U.S. Sarbanes-Oxley Act (SOA), we examine the principles forwarded by this act, and how it addresses those principles with specific rules and governance mechanisms. Invoking Integrative Social Contracts Theory (ISCT), we (...) conclude with a reconciliation of the principles and rules-based approaches to corporate governance as suggested by theory. (shrink)

It has long been suggested that emotion, especially threatening emotion, facilitates early visual perception to promote adaptive responses to potential threats in the environment. Here, we tested whether and how fearful emotion affects the basic visual ability of visual acuity. An adapted Posner’s spatial cueing task was employed, with fearful and neutral faces as cues and a Vernier discrimination task as the probe. The time course of the emotional attention effect was examined by varying the stimulus onset asynchrony of the (...) cue and probe. Two independent experiments consistently demonstrated that the brief presentation of a fearful face increased visual acuity at its location. The facilitation of perceptual sensitivity was detected at an SOA around 300 ms when the face cues were presented for both 250 ms and 150 ms. This effect cannot be explained by physical differences between the fearful and neutral faces because no improvement was found when the faces were presented inverted. In the last experiment, the face cues were flashed very briefly, and we did not find any improvement induced by the fearful face. Overall, we provide evidence that emotion interacts with attention to affect basic visual functions. (shrink)

In this paper, we argue that the comparator model is not a satisfactory model of sense of agency (SoA). We present a theoretical argument and experimental studies. We show (1) most studies of SoA neglect a distinction between SoA associated with movements (narrow SoA) and SoA associated with environmental events (broad SoA); (2) the comparator model emerges from experimental studies of sensory consequences narrowly associated with movements; (3) narrow SoA can be explained by a comparator model, but a motor signal (...) model is simpler and explain narrow SoA equally well; and (4) standard experimental paradigms study only broad SoA. Finally, we present results from two experiments, where we have failed to induce illusory narrow SoA in healthy participants. We believe our experimental approaches should have led to illusory SoA, if the comparator model of SoA was correct. The results challenge proponents of the comparator model of narrow SoA. (shrink)

Whether unconscious stimuli can modulate the preparation of a cognitive task is still controversial. Using a backward masking paradigm, we investigated whether the modulation could be observed even if the prime was made unconscious in 100% of the trials. In two behavioral experiments, subjects were instructed to initiate a phonological or semantic task on an upcoming word, following an explicit instruction and an unconscious prime. When the SOA between prime and instruction was sufficiently long , primes congruent with the task (...) set instruction led to speedier responses than incongruent primes. In the other condition , no task set priming was observed. Repetition priming had the opposite tendency, suggesting the observed task set facilitation cannot be ascribed solely to perceptual repetition priming. Our results therefore confirm that unconscious information can modulate cognitive control for currently active task sets, providing sufficient time is available before the conscious decision. (shrink)

In this paper I take up the ambivalence we rightly feel toward leaders by examining the relationship between charismatic authority and moral exemplarity. Drawing on the social theory of Max Weber, and in dialogue with a case study of an anti-militarism movement called the SOA (School of Americas) Watch, I demonstrate that through a “politics of sacrifice” leaders synchronize their own stories with those of communally recognized exemplars and act in ways that evidence a solidarity in the suffering of those (...) exemplars thereby generating their charismatic authority. While performing crucial strategic, motivational, and pedagogical roles, this charisma also introduces problematic temptations to authoritarianism that short-circuit the practical reasoning that exemplars supposedly help to form. In the end this leaves our sense of ambivalence intact. What is needed, I argue, are practices of critique that reopen the distance between leader and follower and thus allow the possibility of practical reason. (shrink)

Sense of agency is a compelling but fragile experience that is augmented or attenuated by internal signals and by external cues. A disruption in SoA may characterise individual symptoms of mental illness such as delusions of control. Indeed, it has been argued that generic SoA disturbances may lie at the heart of delusions and hallucinations that characterise schizophrenia. A clearer understanding of how sensorimotor, perceptual and environmental cues complement, or compete with, each other in engendering SoA may prove valuable in (...) deepening our understanding the agency disruptions that characterise certain focal neurological disorders and mental illnesses. Here we examine the integration of SoA cues in health and illness, describing a simple framework of this integration based on Bayesian principles. We extend this to consider how alterations in cue integration may lead to aberrant experiences of agency. (shrink)

Despite the fact that the role of learning is recognised in empirical and theoretical work on sense of agency , the nature of this learning has, rather surprisingly, received little attention. In the present study we consider the contribution of associative mechanisms to SoA. SoA can be measured quantitatively as a temporal linkage between voluntary actions and their external effects. Using an outcome blocking procedure, it was shown that training action–outcome associations under conditions of increased surprise augmented this temporal linkage. (...) Moreover, these effects of surprise were correlated with schizotypy scores, suggesting that individual differences in higher level experiences are related to associative learning and to its impact on SoA. These results are discussed in terms of models of SoA, and our understanding of disrupted SoA in certain disorders. (shrink)

The aim of this study was to investigate unconscious priming by the use of a spatial mirror-masking paradigm. Words and nonwords with no under-length letters are mirrored at their horizontal axis. The results are figures of geometric-like forms that contain letters in their upper part. In the three experiments reported in this study, a priming procedure used such mirrored words and nonwords as primes. Participants were ignorant of the nature of the construction of the stimuli. Perceptual reports of the participants (...) revealed that they did not realize that words were hidden in the primes. Nevertheless, they showed priming in all three experiments. Priming effects were replicated with prime–target SOAs of between 1 and 3 s. Functional dissociations were found between ignorant and informed participants. Informed groups showed perceptual and semantic priming, while ignorant groups showed only perceptual priming. (shrink)

Exposure to delayed sensory feedback changes perceived simultaneity between action and feedback [temporal recalibration ] and even modulates the sense of agency over the feedback. To date, however, it is not clear whether the modulation of SoA by TR is caused by a change in perceptual sensitivity or decision criterion of self-agency. This experimental research aimed to tease apart these two by applying the signal detection theory to the agency judgment over auditory feedback after voluntary action. Participants heard a short (...) sequence of tone pips with equal inter-onset intervals, and they reproduced it by pressing a computer mouse. The delay of each tone pip after the mouse press was manipulated as 80 or 180 ms. Subsequently, the participants reproduced it, in which the delay was fixed at 80 ms and there was a 50% chance that the computer took over the control of the tone pips from the participants. The participants’ task was to discriminate who controlled the tone pips and to judge synchrony between tone pips and mouse presses. Results showed that the modulation of the SoA by the TR is caused by a shift in the decision criterion but not in the perceptual sensitivity of agency. (shrink)

Depersonalization consists in a deep modification of the way things appear to a subject, leading him to feel estranged from his body, his actions, his thoughts, and his mind, and even from himself. Even though, when it was discovered at the end of the 19th century, this psychiatric condition was widely used to probe certain aspects of bodily awareness, and more specifically the sense of bodily ownership (SBO), it has been strangely neglected in contemporary debates. In this chapter, I argue (...) that because of three specific features, depersonalization raises some important challenges for current theories of the SBO. The first feature — call it “generality” — is that depersonalization does not only affect the sense of bodily ownership but also, typically, the sense of ``mental ownership’’ (SMO), the sense of agency or ``action ownership’’ (SOA), and the subject’s core sense of herself (CSS), that is, her awareness of herself as an I. The second feature is that except for the symptoms of depersonalization, depersonalized patients are hard to distinguish, psychologically, from normal subjects. This makes it hard to find psychological features that might explain their condition. The last feature, call it “fundamentality” is that the psychological features that do seem abnormal among depersonalized patients seem more likely to be explained by depersonalization than to explain it. These three features raise three challenges — the centrality challenge, the dissociation challenge, and the grounding challenge. Taken together, I will argue, these challenges suggest that the SBO depends on a form of phenomenal “mineness” that would mark my mental states as mine and that cannot be accounted for in sensorimotor, cognitive, or even affective terms. A phenomenal mineness that indeed seems to be psychologically primitive, and only accountable in neurophysiological terms. (shrink)

Visual stimuli that are made invisible by a following mask can nonetheless affect motor responses. To localize the origin of these target priming effects we used the psychological refractory period paradigm. Participants classified tones as high or low, and responded to the position of a visual target that was preceded by a prime. The stimulus onset asynchrony between both tasks varied. In Experiment 1 the tone task was followed by the position task and SOA dependent target priming effects were observed. (...) When the visual position task preceded the tone task in Experiment 2, with short SOA the priming effect propagated entirely to the tone task yielding faster responses to tones on visually congruent trials and delayed responses to tones on visually incongruent trials. Together, results suggest that target priming effects arise from processing before and at the level of the central bottleneck such as sensory analysis and response selection. (shrink)

We used several cue–target SOAs and three different degrees of cue predictability , to investigate the role of awareness of cue–target predictability on cueing effects. A group of participants received instructions about the informative value of the cue, while another group did not receive such instructions. Participants were able to extract the predictive value of a spatially peripheral cue and use it to orient attention, whether or not specific instructions about the predictive value of the cue were given, and no (...) matter their ability to correctly report it in a post-test questionnaire. In the non-predictive block, bad estimators who received no instructions showed regular cueing effects, while good estimators exhibited smaller and non-significant facilitatory effects at the short SOA and an absence of significant IOR at longer SOAs. However, for the instructions group, the pattern of results reversed. (shrink)

Ha-Joon Chang, Research Professor of Economics at SOAS University of London, is a vocal advocate of pluralism in economics. He has also campaigned for public understanding of economics and cautioned against an excessive role of economists in policymaking. In this comprehensive interview, Chang talks about his views on economics, pluralism, the role of economists in democracy, as well as his formative years as an economics student. The interview concludes with Chang's advice for young scholars - both economists interested in non-mainstream (...) approaches and non-economists interested in engaging with economists. (shrink)

The legacy of colonial rule has permeated into all aspects of life and contributed to healthcare inequity. In response to the increased interest in social justice, medical educators are thinking of ways to decolonise education and produce doctors who can meet the complex needs of diverse populations. This paper aims to explore decolonising ideas of healing within medical education following recent events including the University College London Medical School’s Decolonising the Medical Curriculum public engagement event, the Wellcome Collection ’s Ayurvedic (...) Man: Encounters with Indian Medicine exhibition and its symposium on Decolonising Health, SOAS University of London’s Applying a Decolonial Lens to Research Structures, Norms and Practices in Higher Education Institutions and University College London Anthropology Department’s Flourishing Diversity Series. We investigate implications of ‘recentring’ displaced indigenous healing systems, medical pluralism and highlight the concept of cultural humility in medical training, which while challenging, may benefit patients. From a global health perspective, climate change debates and associated civil protests around the issues resonate with indigenous ideas of planetary health, which focus on the harmonious interconnection of the planet, the environment and human beings. Finally, we look further at its implications in clinical practice, addressing the background of inequality in healthcare among the BAME populations, intersectionality and an increasing recognition of the role of inter-generational trauma originating from the legacy of slavery. By analysing these theories and conversations that challenge the biomedical view of health, we conclude that encouraging healthcare educators and professionals to adopt a ‘ decolonising attitude ’ can address the complex power imbalances in health and further improve person-centred care. (shrink)

ABSTRACT: René Descartes' Cogito is an example of a paradigmatic thought experiment, herald of both subjectivism and new science in Europe's Modern Age, that seems to have escaped the attention of thought experiment philosophers. On deep analysis, the Cogito appears as universal instantiation. The Cogito has strong rhetorical effects for it narratively generalizes from I to all human kind, and its historical and philosophical success can be explained from its concise enthymematic structure that rings true in many possible senses. We (...) consider it a preeminent example of a thought experiment as it states the power of thinking as its very contents. From Descartes' methodology of doubt we can conclude that, e.g., on a Wittgensteinian interpretation, the Cogito is a logical thought experiment rather than a psychological one. RESUMO: O Cogito de René Descartes é um exemplo de experimento mental paradigmático, precursor tanto do subjetivismo quanto da nova ciência, na Idade Moderna europeia, o qual parece ter escapado à atenção dos filósofos que estudaram o experimento mental. Na análise profunda, o Cogito aparece como uma instanciação universal. O Cogito tem fortes efeitos retóricos por si mesmo, generalizando narrativamente desde o eu para toda a espécie humana, e seu sucesso histórico e filosófico pode ser explicado por sua estrutura entimemática concisa, que soa através de muitos sentidos possíveis. Consideramos que é um exemplo proeminente de um experimento mental, na medida em que afirma o poder de pensar como seus próprios conteúdos. A partir da metodologia da dúvida de Descartes, podemos concluir que, em uma interpretação wittgensteiniana, o Cogito é um experimento mental mais lógico que psicológico. (shrink)

In this paper we present a set of good practices in the design of a security-centric architecture for a Communication Channel that can be used to secure a Loosely-Coupled distributed platform, over unreliable communication mediums. The proposed practices are derived from designing a complete architecture that is modular and designed to support principles of Service Oriented Architecture (SOA) and the common functional requirements of a wide range of applications, including cybersecurity, smart power grids and industrial Internet of Things (IoT). The (...) architecture was developed and implemented as part of the BIECO project, and is based around open standards such as Open Platform Communications United Architecture (OPC-UA). The key feature of the architecture is that it enables secure asynchronous near-real-time communication between a large number of nodes in a multimodal setup, without the need of any Service to know its place within the tool-chain. Based on our experience with building this system and based on the good results obtained, we are presenting a list of lessons learnt, recommendations for better communication channel modules within loosely coupled distributed systems. (shrink)

Many models of word recognition assume that processing proceeds sequentially from analysis of form to analysis of meaning. In the context of morphological processing, this implies that morphemes are processed as units of form prior to any influence of their meanings. Some interpret the apparent absence of differences in recognition latencies to targets (SNEAK) in form and semantically similar (sneaky-SNEAK) and in form similar and semantically dissimilar (sneaker-SNEAK) prime contexts at an SOA of 48 ms as consistent with this claim. (...) To determine the time course over which degree of semantic similarity between morphologically structured primes and their targets influences recognition in the forward masked priming variant of the lexical decision paradigm, we compared facilitation for the same targets after semantically similar and dissimilar primes across a range of SOAs. The effect of shared semantics on recognition latency increased linearly with SOA when long SOAs were intermixed (Exp. 1) and latencies were significantly faster after semantically similar than dissimilar primes at homogeneous SOAs of 48 ms (Exp. 2) and 34 ms (Exp. 3). Results limit the scope of form-then-semantics models of recognition and demonstrate that semantics influences even the very early stages of recognition. Finally, once general behavior across trials has been accounted for, we fail to provide evidence for individual differences in morphological processing that can be linked to measures of reading proficiency. (shrink)

We carry out a study of definability issues in the standard models of Presburger and Skolem arithmetics (henceforth referred to simply as Presburger and Skolem arithmetics, for short, because we only deal with these models, not the theories, thus there is no risk of confusion) supplied with free unary predicates—which are strongly related to definability in the monadic SOA (second-order arithmetic) without × or + , respectively. As a consequence, we obtain a very direct proof for ${\Pi^1_1}$ -completeness of Presburger, (...) and also Skolem, arithmetic with a free unary predicate, generalize it to all ${\Pi^1_n}$ -levels, and give an alternative description of the analytical hierarchy without × or + . Here ‘direct’ means that one explicitly m-reduces the truth of ${\Pi^1_1}$ -formulae in SOA to the truth in the extended structures. Notice that for the case of Presburger arithmetic, the ${\Pi^1_1}$ -completeness was already known, but the proof was indirect and exploited some special ${\Pi^1_1}$ -completeness results on so-called recurrent nondeterministic Turing machines—for these reasons, it was hardly able to shed any light on definability issues or possible generalizations. (shrink)

Ouija board sessions are illustrious examples of how subjective feelings of control – the Sense of Agency - can be manipulated in real life settings. We present findings from a field experiment at a paranormal conference, where Ouija enthusiasts were equipped with eye trackers while using the Ouija board. Our results show that participants have a significantly lower probability at visually predicting letters in a Ouija board session compared to a condition in which they are instructed to deliberately spell out (...) words with the Ouija board planchette. Our results also show that Ouija board believers report lower SoA compared to sceptic participants. These results support previous research which claim that low sense of agency is caused by a combination of retrospective inference and an inhibition of predictive processes. Our results show that users in Ouija board sessions become increasingly better at predicting letters as responses unfold over time, and that meaningful responses from the Ouija board can only be accounted for when considering interactions that goes on at the participant pair level. These results suggest that meaningful responses from the Ouija board may be an emergent property of interacting and predicting minds that increasingly impose structure on initially random events in Ouija sessions. (shrink)

Using a metacontrast masking paradigm, prior studies have shown that a target’s color information and form information, can be processed without awareness and that unconscious color processing occurs at early, wavelength-dependent levels in the cortical information processing hierarchy. Here we used a combination of paracontrast and metacontrast masking techniques to explore unconscious color and form priming effects produced by blue, green, and neutral stimuli. We found that color priming in normal observers is significantly reduced when an additional paracontrast mask precedes (...) the target at optimal masking SOAs. However, no reduction of form-priming effects was obtained at similar optimal paracontrast SOAs. We conclude that unconscious color priming depends on an early, wavelength- or stimulus-dependent response of color neurons located at early cortical levels whereas unconscious form priming occurs at later levels. (shrink)

Em Parmênides 132b-c é afirmado que se as Ideias fossem pensamentos, então as coisas que participam nelas também seriam pensamentos. A afirmação soa estranha dentro da dinâmica,apresentada no corpus platonicum, da “participação” dos entes sensíveis nas Ideias; todavia, não parece simples determinar o motivo desta estranheza. A chave do problema pode ser uma identificação dos tipos de qualidades das Ideias ou Formas nteligíveis que estão implicados na “participação”. Vários especialistas trataram da matéria na segunda metade do século XX (OWEN, 1968; (...) KEYT, 1969 e 1971; VLASTOS, 1972), tendo sempre como ponto de partida a distinção de qualidades das Ideias traçada no texto dos Tópicos de Aristóteles (137b3-13). Nesse sentido, o presente artigo: i) apresenta os conceitos utilizados no tratamento desta matéria pelos exegetas: “atributos ideais”, “atributos próprios”, “Distinção-P”, “Predicação Paulina”, “Predicação Ordinária” e “Autopredicação”; ii) explica a incompatibilidade da distinção aristotélica de qualidades das Ideias (“Distinção-P”) com a ontologia apresentada nos próprios diálogos platônicos (VLASTOS, 1972 e 1973; CHERNISS, 1944); iii) sugere uma nova “Distinção-P”, mostrando sua compatibilidade com essa ontologia; iv) aplica-a ao caso daquela afirmação sobre as Ideias de Parmênides 132b-c, demonstrando a utilidade dessa distinção pela elucidação que ela promove da dinâmica da “participação” nessa passagem. (shrink)

Yavuz [Altıntaş], Miyase. İctihadın Modern Müslüman-Çoğunluklu Ülkelerin Aile Hukuku Reformlarındaki Rolü: Fas Örneği. Doktora Tezi, SOAS Londra Üniversitesi, Hukuk ve Sosyal Bilimler Fakültesi Hukuk Anabilim Dalı, İngiltere, 2018. Bu çalışmanın temel amacı ictihadın modern dönemdeki kavramsallaştırma ve hukuki temellendirmelerini analiz ederek İslam hukukunun modern Müslüman-çoğunluklu ülkelerde uygulanmasındaki rolünü araştırmaktır. Bu araştırmada ictihadın hukuk reformlarında neden ve nasıl kullanıldığı meselesinin yanı sıra uygulama esnasında hangi motivasyonlar, teknikler, formlar ve muhakeme usullerinin benimsendiği incelenmektedir. Aynı zamanda ictihadın birincil kaynaklara, yani Kur ’an ve (...) S ünnet ’e d önülerek mi yoksa klasik İslam hukuk bilimi içerisinde var olan hukuki görüşlerden seçmek suretiyle mi yapıldığı analiz edilmektedir. Son olarak klasik İslam hukuk teorisi kuralları ve prensiplerinin ne derece itibar gördüğü ve bunların günümüzde ictihad vasıtasıyla ger çekleştirilen reformlarda ne derece takip edildiği araştırılmaktadır. Tezin ana odak noktasını modern Müslüman-çoğunluklu ülkelerde İslam hukukunun en yaygın uygulanan yönü olması sebebiyle aile hukuku teşkil etmektedir. 2004 Fas Aile Kanunu reformlarıictihada dayanılarak uygulamaya konduğundan dolayı özellikle incelenmiştir. Tezin ana argümanı ictihadkavramının klasik ana akımdaki anlayıştan tanım, kapsam ve ictihadetme yetkisi açısından farklılık gösterse de modern dönemdeki ictihadkavramsallaştırmaları ve uygulamalarının İslam hukuku içerisinde yer alması gerektiğidir. Nitekim kavramsal bir analiz yapıldığında özellikle tarihi bağlamın sosyo-politik değişikliklerinin zemin hazırladığı çeşitli ictihadanlayışlarının ve uygulamalarının İslam hukuk tarihi içerisinde var olduğu görülmektedir. Modern dönem ictihaduygulamalarına bakıldığında çoğunun genel olarak klasik İslam hukuk teorisinin detaylı kural ve prensiplerini sıkı bir şekilde takip etmediği görülmektedir. Bununla birlikte bu uygulamalar hukuki temellendirmelerden mahrum değildir ve bazıları klasik İslam hukuk bilimi içerisinde kaynağını bulabilmektedir. Dahası bu uygulamalar iptidai de olsa meşru bir teorik çerçeve sunmaktadır. (shrink)

The philosophical problem of the correspondence between what we think, what we say and 'what there is' is a perennial one. At the beginning of the Sophistical Refutations (1, 165a7-9), for example, Aristotle gives a synthetic formulation of it: since 'it is impossible in a discussion to bring in the actual things discussed: we use their names as symbols instead of them; and we suppose that what follows in the names, follows in the things as well' (Aristotle 1984, I, 278). (...) But whereas this diffi culty pertains to language (or thought) in general, it becomes remarkably acute when the linguistic expressions at stake are not simple names, but bearers of truth and falsity, namely, statements or, to use the medieval word for it, propositions. Th is chapter addresses the following question: did medieval authors consider that just as names signify things, propositions, too, are semantically related to special objects-- and if so, what kind of things did they think those special objects are? I shall begin with two short introductory remarks about the notion of state of aff airs (SOA) as well as the identifi cation criteria for the theories describing them before the technical category of SOA was coined (Sections 1 and 2); I shall then give a survey of the fi ve main types of medieval answers given to the question of the nature of SOAs (Section 3); fi nally, I shall briefl y compare the medieval conceptions with (some) later, that is late-nineteenth and early-twentieth century, as well as contemporary theories of SOAs (Section 4). (shrink)

The dynamics of resource allocation to pictures of spiders and other animals in spider-fearful participants was investigated. The task of the participants was to respond rapidly and accurately to various probe stimuli superimposed on pictures of different animals. These were arguably fear relevant (spiders, snakes, and wolves) and fear irrelevant (beetles, turtles, and rabbits). The probes were shown with different stimulus onset asynchronies (SOAs) from picture onset to address the dynamics of resource allocation. A larger allocation of resources to spider (...) pictures than to pictures of all other animals, with no difference between the latter regarding resource allocation was found. For the task that demanded more resources the fear-related physiological responses decreased, suggesting that controlled processing modulates fear responses. (shrink)

Based on concepts of self-organization, we interpret apparent motion as the result of a so-called non-equilibrium phase transition of the perceptual system with the stimulus-onset asynchrony (SOA) acting as a control parameter. Accordingly, we predict a significantly increasing variance of the quality index of apparent motion close to critical SOAs. [Shepard].

We show that a theory of autonomous iterated Ramseyness based on second order arithmetic (SOA) is proof-theoretically equivalent to ${\Pi^1_2}$ -comprehension. The property of Ramsey is defined as follows. Let X be a set of real numbers, i.e. a set of infinite sets of natural numbers. We call a set H of natural numbers homogeneous for X if either all infinite subsets of H are in X or all infinite subsets of H are not in X. X has the property (...) of Ramsey if there exists a set which is homogeneous for X. The property of Ramsey is considered in reverse mathematics to compare the strength of subsystems of SOA. To characterize the system of ${\Pi^1_2}$ -comprehension in terms of Ramseyness we introduce a system of autonomous iterated Ramseyness, called R-calculus. We augment the language of SOA with additional set terms (called R-terms) ${R\vec{x}X\phi(\vec{x},X)}$ for each first order formula ${\phi(\vec{x},X)}$ (where φ may contain further R-terms). The R-calculus is a system which comprises comprehension for all first order formulas (which may contain R-terms or other set parameters) and defining axioms for the R-terms which claim that for each ${\vec{x}}$ , we can remove finitely many elements from the set ${R\vec{x}X\phi(\vec{x},X)}$ such that the remaining set is homogeneous for ${\{{X}{\phi(\vec{x},X)\}}}$ . We show that the R-calculus proves the same ${\Pi^1_1}$ -sentences as the system of ${\Pi^1_2}$ -comprehension. (shrink)

Previous accounting ethics research berates auditors for ethical lapses that contribute to the failure of Andersen (e.g., Duska, R.: 2005, Journal of Business Ethics 57, 17–29; Staubus, G.: 2005, Journal of Business Ethics 57, 5–15; however, some of the blame must also fall on regulatory and professional bodies that exist to mitigate auditors’ ethical lapses. In this paper, we consider the ethical and economic context that existed and facilitated Andersen’s failure. Our analysis is grounded in Akerlof’s (1970, Quarterly Journal of (...) Economics August, 488–500) Theory of the Market for Lemons and we characterize the market for audit reports as a market for lemons. Consistent with Akerlof’s model, we consider the appropriateness of the countervailing mechanisms that existed at the time of Andersen’s demise that appeared to have effectively failed in counteracting Andersen’s ethical shortcomings. Finally, we assess the appropriateness of the remedies proposed by the Sarbanes–Oxley Act of 2002 (SOA) to ensure that similar ethical lapses will not occur in the future. Our analysis indicates that the SOA regulatory reforms should counteract some of the necessary conditions of the Lemons Model, and thereby mitigate the likelihood of audit failures. However, we contend that the effectiveness of the SOA critically depends upon the focus and attention of the␣Public Companies Accounting Oversight Board (PCAOB) towards assessing the ethical climates of public accounting firms. Assessments by the PCAOB of public accounting firm’s ethical climate are needed to sufficiently ensure that public accounting firms effectively promote and maintain audit quality in situations where unconscious bias or economic incentives may erode the public accounting firm’s independence. (shrink)

Must readers intend to process a word to activate various levels of representation, or is such processing simply triggered by the presentation of a word ? This issue was addressed via the use of Besner and Care’s Task Set paradigm. On each trial a cue, which indicated which of two tasks to perform appeared either before the target, or at the same time as the target. If subjects can process the target while preparing a task set, then the effect of (...) a manipulated psycholinguistic factor should be absorbed into the time taken to process the cue. Despite robust main effects of SOA and word frequency there was no interaction between these factors when the task was to read aloud. This result implies that target processing is delayed until the subject knows what task to perform, and therefore that intention plays an important role when reading words aloud. (shrink)

¡Presente! develops a lived theology of nonviolence through an extended case study of the movement to close the School of the Americas (also known as the SOA or WHINSEC). Specifically,it analyzes how the presence of the dead—a presence proclaimed at the annual vigil of the School of the Americas Watch—shapes a distinctive, transnational, nonviolent movement. Kyle B.T. Lambelet argues that such a messianic affirmation need not devolve into violence or sectarianism and, in fact, generates practical reasoning. By developing a messianic (...) political theology in dialogue with the SOA Watch movement, Lambelet's work contributes to Christian ethics as he explores the political implications of the resurrection of the dead. This book contributes to studies of strategic nonviolence and civil resistance by demonstrating how religious and moral dynamics remain an essential part of such struggles. (shrink)

What makes for a good explanation of a person’s actions? Their reasons, or soa natural reply goes. But how do reasons function as part of explanations, that is, within an account of the causes of action? Here philosophers divide concerning the logical relation in which reasons stand to actions. For, tradition holds, reasons evaluatively characterized must be causally inert, inasmuch as the normative features cannot be found in any account of the empirical/descriptive. To countenance reasons as causes thus seems to (...) imply some degree of normative involvement in causal explanation. Mark Risjord opts for full normative involvement while David Henderson insistently denies a role to norms in explanation. Stueber occupies an intermediate position here. I question just whether there exists some "special" problem regarding norms, at least in the form which, I take it, all three of the authors I discuss assume there to be one. Key Words: reasons • causes • norms • rules • explanation. (shrink)

Synchronized movements with external periodic rhythms, such as dancing to a beat, are commonly observed in daily life. Although it has been well established that some vocal learning species (including parrots and humans) spontaneously develop this ability, it has only recently been shown that monkeys are also capable of predictive and tempo-flexible synchronization to periodic stimuli. In our previous study, monkeys were trained to make predictive saccades for alternately presented visual stimuli at fixed stimulus onset asynchronies (SOAs) to obtain a (...) liquid reward. The monkeys generalized predictive synchronization to novel SOAs in the middle of trained range, suggesting a capacity for tempo-flexible synchronization. However, it is possible that when encountering a novel tempo, the monkeys might sample learned saccade sequences from those for the short and long SOAs so that the mean saccade interval matched the untrained SOA. To eliminate this possibility, in the current study we tested monkeys on novel SOAs outside the trained range. Animals were trained to generate synchronized eye movements for 600 and 900-ms SOAs for a few weeks, and then were tested for longer SOAs. The accuracy and precision of predictive saccades for one untrained SOA (1200 ms) were comparable to those for the trained conditions. On the other hand, the variance of predictive saccade latency and the proportion of reactive saccades increased significantly in the longer SOA conditions (1800 and 2400 ms), indicating that temporal prediction of periodic stimuli was difficult in this range, similar to previous results on synchronized tapping in humans. Our results suggest that monkeys might share similar synchronization mechanisms with humans, which can be subject to physiological examination in future studies. (shrink)

This study used priming paradigm with lexical decision task to examine the effects of different levels of semantic relatedness on the identification of Chinese phonetic–semantic compound characters. Unlike previous studies that simply classify Chinese compound characters as semantically transparent or opaque, we categorize the semantic relatedness between semantic radicals and the target characters containing them into five levels: highly related, moderately related, minimally related, unrelated but sharing the semantic radical, and unrelated without sharing the semantic radical. Moreover, three stimulus-onset asynchrony (...) s were used in this study to dissociate the radical- and character-level semantic priming effects. Results revealed a graded priming effect of the semantic radical on character recognition in Chinese readers for all SOAs. More specifically, the facilitative effect of the semantic radical on character processing was most evident for the high condition, followed by the minimal, form-only, and control conditions. This suggests a graded priming effect of the semantic radical on character identification. (shrink)

This paper is based on the Isaac and Tamara Deutscher Memorial-Prize Lecture given at SOAS in London, on 27 November 2009. It claims that Marxism remains built around a critique of political economy but lacks a parallel critique of international relations. IR naturalises the organisation of inter-state relations along lines comparable to the naturalisation of the capitalist economy by economics. The paper argues that the disciplinary organisation of Western academia is part of the class-discipline in society at large. It was (...) triggered by the abstraction of economics from the field of the broader social sciences. IR, in turn, was codified in the slipstream of Woodrow Wilson’s response to the Russian Revolution that followed on from the US-intervention in World-War I. The discipline was built around a founding myth of global liberalism and national self-determination. It served, among other things, to disqualify the claims of the theory of imperialism on disciplinary grounds, and its initial connections with Western hegemony, capital, and the national-security state remain in place today. Distinguishing modes of foreign relations, and specifying the occupation of space, protection, and exchange for tribal and empire/nomad foreign relations, as well as sovereign equality and global governance, on the other hand make it possible to understand the rise and continuing hegemony of the West in its own right, rather than as a superstructure of the transnationalisation of capital. (shrink)

Today, Service-Oriented Architecture (SOA) and Grid and Cloud computing comprise the key technologies in distributed systems. In systems following the SOA approach, functionalities are delivered and consumed as services. Given the variety of resources (i.e. data, computing capabilities, applications, etc) as well as the variation of user-requested Quality of Service (e.g., high performance, fast access, low cost, high media resolution, etc), there is a need for advanced user management, trust establishment and service management mechanisms which adjust, monitor and evaluate service (...) provision according to the users’ requirements and rights. Within this context, security and privacy requirements have become of great importance, as well the need for flexible and efficient identity management. This editorial of the special issue Identity Management in Grid and SOA discusses the importance of identity management within SOA and Grid environments. A number of techniques and existing systems addressing these issues are presented and evaluated. Identity management is considered in various contexts and at different levels, including service composition level, system level and inter-system communication level. (shrink)

This article is part of alarger project exploring the continuity betweentwo philosophical positions – that of Frenchpoststructuralist Gilles Deleuze (1925–1995)and John Dewey – that appear at first sight tobe separated by time, place and culture. Thescope of the present paper is necessarilylimited and focuses on one aspect of theproject, namely: the problematics ofsubjectivity, or subject formation, inDeleuze's philosophy. Deleuze's position isestablished as pragmatic by virtue of itssharing the value allotted by Dewey toexperiential and experimental inquiry inphilosophy. By drawing initial parallels (...) with anumber of selected Dewey's excerpts, this paperaims to open up a space for the imaginarydialogue between two philosophical thoughts soas to consider a possibility for applyingDeleuze's philosophy to educational theory andpractice in the context of current debates andin a manner continuous with the Deweyan legacy.The paper concludes by affirming Deleuze'splace in the contemporary scholarship on Dewey. (shrink)

This article identifies the structural and conceptual aspects of a visual construction often used in advertisements to establish a metaphoric or associative relation, that is, symmetric object alignment (SOA). It offers an account of the formal ingredients of SOA, which fall into two groups: object-constitutive factors (like size, shape, and color) and object-depictment factors (like perspective, orientation, and distance from viewing point). Both factors allow us to treat SOA as a visual rhetorical scheme. We also discuss how SOA relates to (...) conceptual structure, metaphoric or otherwise. Four types of relations are distinguished, based on the way in which perceptual and conceptual characteristics interact. Finally, we discuss the way in which these characteristics relate to the processing of such visual messages. One depictment factor will be focused on in particular: one-to-one versus one-to-many alignments. An attempt is made to connect these 2 patterns to the much-discussed topic in verbal metaphor theory, object comparison versus categorization. (shrink)

The argument that automatic processes are responsible for affective/evaluative priming effects has been primarily based on studies that have manipulated the stimulus onset asynchrony (SOA; i.e., the interval between the onset of the prime and the onset of the target). Moreover, these SOA studies provide an insight in the time course of the activation processes underlying automatic affect/attitude activation. Based on a fine-grained manipulation of the SOA employing either the evaluative decision task (Experiment 1) and the pronunciation task (Experiment 2) (...) we concluded that affective priming, and hence automatic affect activation, is based on fast-acting automatic processes. The results of Experiment 3 provide a valid explanation for an apparent discrepancy between the results of Experiments 1 and 2 and previous findings. Finally, the results of Experiment 3 support the prediction of Jarvis and Petty (1996) that affective priming effects should be stronger for participants who are more chronically engaged in conscious evaluations. (shrink)

Relative blindsight is said to occur when different levels of subjective awareness are obtained at equality of objective performance. Using metacontrast masking, Lau and Passingham reported relative blindsight in normal observers at the shorter of two stimulus-onset asynchronies between target and mask. Experiment 1 replicated the critical asymmetry in subjective awareness at equality of objective performance. We argue that this asymmetry cannot be regarded as evidence for relative blindsight because the observers’ responses were based on different attributes of the stimuli (...) at the two SOAs. With an invariant criterion content , there was no asymmetry in subjective awareness across the two SOAs even though objective performance was the same. Experiment 3 examined the effect of criterion level on estimates of relative blindsight. Collectively, the present results question whether metacontrast masking is a suitable paradigm for establishing relative blindsight. Implications for theories of consciousness are discussed. (shrink)

When humans are required to perform two or more tasks concurrently, their performance declines as the tasks get closer together in time. Here, we investigated the mechanisms of this cognitive performance decline using a dual-task paradigm in a simulated driving environment, and using drift-diffusion modeling, examined if the two tasks are processed in a serial or a parallel manner. Participants performed a lane change task, along with an image discrimination task. We systematically varied the time difference between the onset of (...) the two tasks and measured its effect on the amount of dual-task interference. Results showed that the reaction times of the two tasks in the dual-task condition were higher than those in the single-task condition. SOA influenced the RTs of both tasks when they were presented second and the RTs of the image discrimination task when it was presented first. Results of drift-diffusion modeling indicated that dual-task performance affects both the rate of evidence accumulation and the delays outside the evidence accumulation period. These results suggest that a hybrid model containing features of both parallel and serial processing best accounts for the results. Next, manipulating the predictability of the order of the two tasks, we showed that in unpredictable conditions, the order of the response to the two tasks changes, causing attenuation in the effect of SOA. Together, our findings suggest higher-level executive functions are involved in managing the resources and controlling the processing of the tasks during dual-task performance in naturalistic settings. (shrink)

La problématique des rapports entre l’agriculture et le capitalisme resurgit à intervalles réguliers, et suscite des controverses entre des chercheurs se réclamant, de près ou de loin, de Marx et de ses continuateurs. Des deux côtés de la Manche, la fin des années 1960 et le début des années 1970 constituent un moment important de redécouverte, de discussion et de réinterprétation des travaux marxistes sur la question paysanne et agraire. Pourtant, le débat en France à cette époque tranche nettement avec (...) celui qu’on peut observer au sein du « peasants seminar » de la School of Oriental and African Studies (SOAS) de Londres. Ce regain d’intérêt pour la paysannerie et l’agriculture s’accompagna en Angleterre d’une relecture des thèses classiques de Marx, d’Engels, de Lénine ou encore de Kautsky. Il ne s’agissait pas de « jeter le bébé marxiste avec l’eau du bain », comme ce fut le cas en France, mais bien de prolonger et d’enrichir l’analyse marxiste classique et de l’actualiser dans un contexte marqué par les luttes anticoloniales, la remise en cause du « productivisme », et la remise en question du modèle soviétique. (shrink)

The ability to resist distracting stimuli whilst voluntarily focusing on a task is fundamental to our everyday cognitive functioning. Here, we investigated how this ability develops, and thereafter declines, across the lifespan using a single task/experiment. Young children (5–7 years), older children (10–11 years), young adults (20–27 years), and older adults (62–86 years) were presented with complex visual scenes. Endogenous (voluntary) attention was engaged by having the participants search for a visual target presented on either the left or right side (...) of the display. The onset of the visual scenes was preceded – at stimulus onset asynchronies (SOAs) of 50, 200, or 500 ms – by a task-irrelevant sound (an exogenous crossmodal spatial distractor) delivered either on the same or opposite side as the visual target, or simultaneously on both sides (cued, uncued, or neutral trials, respectively). Age-related differences were revealed, especially in the extreme age-groups, which showed a greater impact of crossmodal spatial distractors. Young children were highly susceptible to exogenous spatial distraction at the shortest SOA (50 ms), whereas older adults were distracted at all SOAs, showing significant exogenous capture effects during the visual search task. By contrast, older children and young adults' search performance was not significantly affected by crossmodal spatial distraction. Overall, these findings present a detailed picture of the developmental trajectory of endogenous resistance to crossmodal spatial distraction from childhood to old age and demonstrate a different efficiency in coping with distraction across the four age-groups studied. (shrink)