This study explores how distributing the controls of a video game among multiple players affects the sociality and engagement experienced in game play. A video game was developed in which the distribution of game controls among the players could be varied, thereby affecting the abilities of the individual players to control the game. An experiment was set up in which eight groups of three players were asked to play the video game while the distribution of the game controls was increased (...) in three steps. After each playing session, the players’ experiences of sociality and engagement were assessed using questionnaires. The results showed that distributing game control among the players increased the level of experienced sociality and reduced the level of experienced control. The game in which the controls were partly distributed led to the highest levels of experienced engagement, because the game allowed social play while still giving the players a sense of autonomy. The implications for interaction design are discussed. (shrink)

Pain management has improved in the past few decades. Opioid analgesics have become the mainstay in the treatment of cancer pain whilst inter-disciplinary pain management programmes are the generally accepted approach to chronic pain of non-malignant origin. Recently some pain specialists have advocated the use of opioids in the long-term management of non-cancer pain. This has raised some fundamental questions about the purpose of pain management. Is it best to opt for maximum pain relief and comfort, or should one emphasise (...) function and activity as higher priorities? Will the use of opioids create more autonomy for pain sufferers or will this add handicaps to lives which are already limited? Until more clinical outcome data are available we advocate caution in the use of opioid analgesia. Such caution can, and does, raise questions about the rights of the patient and the rights of the prescriber in a context where the facts do not point to a clear course of action. (shrink)

This article reflects a conversation between Jan G. van der Watt and Stephan Joubert. The article serves as the introduction to the Special Collection: ‘From timely exegesis to contemporary ecclesiology: Relevant hermeneutics and provocative embodiment of faith in a Corona-defined world – Festschrift for Stephan Joubert, sub-edited by Willem Oliver ’. Following a brief bio-statement as introduction, the following issues are discussed: the collection for the Jerusalem church; relevance of theology for society; social-scientific exegesis; the ancient concept of (...) grace; Bible translation in South Africa; public theology on the electronic platform; biblical examples of leadership and electronic media in religious activities and education.Contribution: This Festschrift represents current trends in biblical scholarship and ecclesial leadership. It contributes to the public discourse in church and society, especially the role of the electronic media in current Fourth Industrial Revolution. (shrink)

Social entrepreneurs need resources to develop their organizations and catalyze social impact. Existing research focuses on how social entrepreneurs access and use resources, yet it neglects how they search for resource holders. This issue is particularly salient in social entrepreneurs’ decisions about whom to approach for interpersonal feedback as a valuable resource. The current literature offers lists of individuals whom social entrepreneurs approach for feedback and implies these individuals can be easily accessed. Thus, it offers little insight into how social (...) entrepreneurs select whom to approach for feedback and why, or why they struggle to access feedback. We conducted an in-depth inductive study based on 82 interviews with 36 nascent social entrepreneurs to investigate how they search for and select individuals to approach for feedback within and outside their social networks through an iterative appraisal process. Our findings start to open the black box of searching for resource holders in the resource mobilization process and offer insights on power and stigma in social entrepreneurship. (shrink)

Social enterprises that operate in business-to-business contexts, often out of emerging economies, typically face high expectations from business clients, mainstream competition, and the challenge of operating across distances. In these contexts, social enterprises need to carefully choose which market segments to serve and how to organize their social mission accordingly. Based on the case of impact sourcing—hiring and training of disadvantaged staff for global business services—we seek to better understand this interplay. In general, we find that social enterprises in this (...) context focus on serving either domestic clients with an implicit social mission and an integrated social enterprise model or international clients with a more explicit social mission and a decoupled model. We discuss why both main configurations represent viable social enterprise models in the outsourcing industry, and why, in particular, the professional background of founders plays a key role in these strategic choices. Our findings contribute to a more nuanced and context-sensitive understanding of social enterprise model adoption in emerging economies. (shrink)

The Russia–Ukraine war has challenged our understanding of corporate social responsibility (CSR). Whereas CSR is traditionally associated with business self-regulation that benefits business and society, the conflict has revealed new forms of what we call “partisan CSR.” Based on comprehensive data from Fortune Global 500 firms, this study discovers that in particular Western, but also some non-Western, corporations have engaged in partisan CSR activities, ranging from (1) strengthening Ukraine’s economy, to (2) enhancing security and protection for Ukrainian citizens, (3) providing (...) military support, (4) weakening Russia’s economy, and (5) supporting Ukraine in symbolic ways. By comparison, several mostly non-Western firms, e.g. from Asian countries, have chosen to be “neutral”, while, in some cases, exploiting economic opportunities arising from the conflict. This study also discusses major drivers of these CSR responses, including political climate, resource availability and economic dependency, isomorphism, and regulatory requirements. Our findings suggest a shift from political CSR to partisan CSR, which we expect to become more important with growing geopolitical divides and territorial conflicts. (shrink)

Bonjour (1985: 101 and 1999: 124) and other coherence theorists of justification before him (e.g. Ewing, 1934: 246) have complained that we do not have a satisfactory analysis of the notion of coherence. The problem with existing accounts of coherence is that they try to bring precision to our intuitive notion of coherence independently of the particular role that it is meant to play within the coherence theory of justification (e.g Lewis, 1946: 338). This is a mistake: it does not (...) make any sense to ask what precisely makes for a more coherent information set independently of the particular role that coherence is supposed to play within the context in question. What is this context and what is this role? The coherence theory of justification rides on a particular common sense intuition: when we gather information from less than fully reliable sources, then the more coherent the story that materializes is, the more confident we may be, ceteris paribus. Within the context of information gathering from certain types of sources, coherence is a property of stories which plays a confidence boosting role. But what features should the information sources have, so that the coherence of the information set is indeed a determinant of our degree of confidence in question? And what goes into the ceteris paribus clause? In other words, what other factors affect our confidence in the information set in question? (shrink)

BackgroundNarrative reviews are the commonest type of articles in the medical literature. However, unlike systematic reviews and randomized controlled trials (RCT) articles, for which formal instruments exist to evaluate quality, there is currently no instrument available to assess the quality of narrative reviews. In response to this gap, we developed SANRA, the Scale for the Assessment of Narrative Review Articles.MethodsA team of three experienced journal editors modified or deleted items in an earlier SANRA version based on face validity, item-total correlations, (...) and reliability scores from previous tests. We deleted an item which addressed a manuscript’s writing and accessibility due to poor inter-rater reliability. The six items which form the revised scale are rated from 0 (low standard) to 2 (high standard) and cover the following topics: explanation of (1) the importance and (2) the aims of the review, (3) literature search and (4) referencing and presentation of (5) evidence level and (6) relevant endpoint data. For all items, we developed anchor definitions and examples to guide users in filling out the form. The revised scale was tested by the same editors (blinded to each other’s ratings) in a group of 30 consecutive non-systematic review manuscripts submitted to a general medical journal.ResultsRaters confirmed that completing the scale is feasible in everyday editorial work. The mean sum score across all 30 manuscripts was 6.0 out of 12 possible points (SD 2.6, range 1–12). Corrected item-total correlations ranged from 0.33 (item 3) to 0.58 (item 6), and Cronbach’s alpha was 0.68 (internal consistency). The intra-class correlation coefficient (average measure) was 0.77 [95% CI 0.57, 0.88] (inter-rater reliability). Raters often disagreed on items 1 and 4.ConclusionsSANRA’s feasibility, inter-rater reliability, homogeneity of items, and internal consistency are sufficient for a scale of six items. Further field testing, particularly of validity, is desirable. We recommend rater training based on the “explanations and instructions” document provided with SANRA. In editorial decision-making, SANRA may complement journal-specific evaluation of manuscripts—pertaining to, e.g., audience, originality or difficulty—and may contribute to improving the standard of non-systematic reviews. (shrink)

A consistent finding in research on conditional reasoning is that individuals are more likely to endorse the valid modus ponens (MP) inference than the equally valid modus tollens (MT) inference. This pattern holds for both abstract task and probabilistic task. The existing explanation for this phenomenon within a Bayesian framework (e.g., Oaksford & Chater, 2008) accounts for this asymmetry by assuming separate probability distributions for both MP and MT. We propose a novel explanation within a computational-level Bayesian account of reasoning (...) according to which “argumentation is learning”. We show that the asymmetry must appear for certain prior probability distributions, under the assumption that the conditional inference provides the agent with new information that is integrated into the existing knowledge by minimizing the Kullback-Leibler divergence between the posterior and prior probability distribution. We also show under which conditions we would expect the opposite pattern, an MT-MP asymmetry. (shrink)

Under the influence of a narrowly understood scientific legal positivism, jurisprudence has neglected interdisciplinary research for a long time. However, today there are strong practical and scholarly reasons for an interdisciplinary analysis of law triggered, e.g., by bioethics, life sciences, economics and ecology. And yet the very subject matter of law shimmering between normativity and descriptivity seems to resist all attempts to be taken in by common enterprises across disciplines: How then is the necessary interdisciplinary research in jurisprudence possible without (...) abandoning its core, legal dogmatics? This question was discussed at a special working group during the IVR-World Congress in Cracow. The papers have been polished and updated for publication. The volume falls into two parts: One is directed at the basic conceptual and institutional questions of interdisciplinary research in jurisprudence; the other one concentrates on one fruitful and highly important field of interdisciplinary research, constitutionalism. The volume brings together a truly international and in itself interdisciplinary group of experts in the field, from Finland to Brazil and from Spain to Greece. (shrink)

Deliberation is a standard procedure to make decisions in not too large groups. It has the advantage that the group members can learn from each other and that, at the end, often a consensus emerges that everybody endorses. But a deliberation procedure also has a number of disadvantages. E.g., what consensus is reached usually depends on the order in which the different group members speak. More specifically, the group member who speaks first often has an unproportionally high impact on the (...) final decision: She anchors the deliberation process. While the anchoring effect undoubtably appears in real deliberating groups, we ask whether it also appears in groups whose members are truth-seeking and rational in the sense that they take the information provided by their fellow group members properly into account by updating their beliefs according to plausible rules. To answer this question and to make some progress towards explaining the anchoring effect, a formal model is constructed and analyzed. Using this model, we study the anchoring effect in homogenous groups, for which we provide analytical results, and in inhomogeneous groups, for which we provide simulation results. (shrink)

Affiliation is both an antecedent and a consequence of emotional mimicry (i.e. imitating a counterpart’s emotional expression). Thus, interacting with a disliked partner can decrease emotional mimicry, which in turn can further decrease liking. This perpetuating circle has not been investigated in the context of mental health stigma yet. The present study tested the influence of the label “schizophrenia” on liking, interpersonal closeness, and emotional mimicry. In an online experiment (n = 201), participants recruited from the general population saw several (...) videos of actors displaying emotional expressions. Actors were described with one of four labels: “schizophrenia”, “healthy”, “diabetes”, and a negative adjective (e.g. “hot-tempered”). Emotional mimicry was measured using OpenFace 2.2. Liking and interpersonal closeness were assessed with questionnaires. Overall, compared to other labels, participants reported less liking and interpersonal closeness to the actor with the schizophrenia label. However, no effect on emotional mimicry was found. The decreased liking of the schizophrenia actors was explained by a lack of knowledge about schizophrenia and the explicit stigma of schizophrenia. Our study contributes to the literature by highlighting the need to reduce the stigma of schizophrenia. (shrink)

In this paper, we present a generic format for adaptive vague logics. Logics based on this format are able to (1) identify sentences as vague or non-vague in light of a given set of premises, and to (2) dynamically adjust the possible set of inferences in accordance with these identifications, i.e. sentences that are identified as vague allow only for the application of vague inference rules and sentences that are identified as non-vague also allow for the application of some extra (...) set of classical logic rules. The generic format consists of a set of minimal criteria that must be satisfied by the vague logic in casu in order to be usable as a basis for an adaptive vague logic. The criteria focus on the way in which the logic deals with a special ⊡-operator. Depending on the kind of logic for vagueness that is used as a basis for the adaptive vague logic, this operator can be interpreted as completely true, definitely true, clearly true, etc. It is proven that a wide range of famous logics for vagueness satisfies these criteria when extended with a specific ⊡-operator, e.g. fuzzy basic logic and its well known extensions, cf. [7], super- and subvaluationist logics, cf. [6], [9], and clarity logic, cf. [13]. Also a fuzzy logic is presented that can be used for an adaptive vague logic that can deal with higher-order vagueness. To illustrate the theory, some toy-examples of adaptive vague proofs are provided. (shrink)

Abstract The view that mirror self-recognition (MSR) is a definitive demonstration of self-awareness is far from universally accepted, and those who do support the view need a more robust argument than the mere assumption that self-recognition implies a self-concept (e.g. Gallup in Socioecology and Psychology of Primates, Mouton, Hague, 1975 ; Gallup and Suarez in Psychological Perspectives on the Self, vol 3, Erlbaum, Hillsdale, 1986 ). In this paper I offer a new argument in favour of the view that MSR (...) shows self-awareness by examining the nature of the mirror image itself. I argue, using the results of ‘symbol-mindedness’ experiments by Deloache (Trends Cogn Sci 8(2):66–70, 2004) , that where self-recognition exists, the mirror image must be functioning as a symbol from the perspective of the subject and the subject must therefore be ‘symbol-minded’ and hence concept possessing. Further to this, according to the Concept Possession Hypothesis of Self-Consciousness (Savanah in Conscious Cogn 2011 ), concept possession alone is sufficient to demonstrate the existence of self-awareness. Thus MSR as a demonstration of symbol-mindedness implies the existence of self-awareness. I begin by defending the ‘mark test’ protocol as a robust methodology for determining self-recognition. Then follows a critical examination of the extreme views both for and against the interpretation of MSR as an indication of self-awareness: although the non-mentalistic interpretation of MSR is unconvincing, the argument presented by Gallup is also inadequate. I then present the symbol-mindedness argument to fill in the gaps in the Gallup approach. Content Type Journal Article Pages 1-17 DOI 10.1007/s10539-012-9318-2 Authors Stephane Savanah, ARC Centre of Excellence in Cognition and its Disorders (CCD), Macquarie University, Sydney, NSW 2109, Australia Journal Biology and Philosophy Online ISSN 1572-8404 Print ISSN 0169-3867. (shrink)

L’article cherche à fournir une défense de la théorie discursive de la morale de Habermas contre une critique importante formulée récemment par J. G. Finlayson, lequel soutient que Habermas rejetterait ce qu’il appelle le « cognitivisme métaéthique » et qu’un tel rejet le confronterait au problème de Frege-Geach. L’article démontre en détail que cette critique est non fondée. Il montre de plus que la seule forme de cognitivisme rejetée par Habermas est le descriptivisme moral en ce que cette approche serait (...) contre-intuitive eu égard à l’usage normal de nos expressions morales. L’article cherche finalement à répondre à certaines objections majeures que les philosophes descriptivistes pourraient soulever à l’endroit de la théorie habermassienne de la morale, en particulier contre sa thèse de l’analogie entre vérité propositionnelle et justesse normative.The paper aims at providing a defence of Habermas’s discourse theory of morality against a significant criticism recently levelled by J. G. Finlayson, who maintains that Habermas would reject what he calls “metaethical cognitivism” and that such a rejection would cause him to face what has been known as the Frege-Geach problem. The paper demonstrates in detail that this claim is unfounded. It further shows that the only form of cognitivism rejected by Habermas is moral descriptivism, since this approach would be counter-intuitive as regards the normal use of our moral expressions. The paper finally seeks to respond to major objections descriptivist philosophers might raise against Habermas’s theory of morality, in particular against his analogy thesis between propositional truth and normative rightness. (shrink)

Cet article vise à présenter le pluralisme de William James par contraste avec celui de Bertrand Russell. En effet, malgré les rapprochements qu’ont pu faire Jean Wahl et Gilles Deleuze, les pluralismes de Russell et de James sont profondément différents et par certains aspects incompatibles. Le pluralisme de Russell est d’origine logique et constitue un argument en faveur du réalisme en théorie de la connaissance. Le pluralisme de James est d’origine métaphysique et ne trouve sa signification et sa valeur que (...) dans les conséquences pratiques auxquelles il aboutit en morale. Le critère du premier est la reconnaissance d’une multiplicité d’éléments irréductibles les uns aux autres. Le critère du second est la reconnaissance de la liberté et de la nouveauté dans le monde. Le premier peut bien trouver son origine dans l’empirisme atomiste de Hume, mais le second est plutôt le prolongement des philosophies de Kant et de Renouvier. Le rapprochement malheureux entre les deux est dû selon nous a une équivoque sur la question des relations extérieures, qui empêche de comprendre correctement la pensée de James. (shrink)

A central question for psychologists, economists, and philosophers is how human lives should be valued. Whereas egalitarian considerations give rise to models emphasizing that every life should be valued equally, empirical research has demonstrated that valuations of lives depend on a variety of factors that often do not conform to specific normative expectations. Such factors include emotional reactions to the victims and cognitive considerations leading to biased perceptions of lives at risk (e.g., attention, mental imagery, pseudo-inefficacy, and scope neglect). They (...) can lead to a valuation function with decreasing marginal value and sometimes even decreasing absolute value as the number of victims increases. As a result, people spend more money to save an individual while at the same time being insensitive and apathetic to large losses of life, despite endorsing egalitarian norms. In this conceptual paper, we propose a descriptive model highlighting the role of different motivations and the conditions under which cognitions and emotions result in deviations from egalitarian normative valuations of human lives. (shrink)

English summary: A commentary on Spinoza's final work, Tractatus Politicus has until recently remained a desideratum. In contrast to his metaphysics and his philosophy of religion, Spinoza's theories on politics, the state and law have received little attention in the German-speaking countries. It's only recently that Spinoza's political philosophy again become widely discussed in Germany. Having established the role of political philosophy and working always within the context of Spinoza's complete work, this volume comments firstly on Spinoza's theory on the (...) natural genesis of law and the state, including the foundations of political philosophy, the relationship between natural and national law and the theory of sovereignty and international relations. Continuing on this basis it moves on to his concept for the optimization of the system of political and legal institutions in all three forms of government. Finally, there is an analysis of the current relevance of Spinoza's thought and its impact on current debate. The work includes contributions by Tilman Altwicker, Wolfgang Bartuschat, Tobias Herbst, Gunnar Hindrichs, Rainer Keil, Stephan Kirste, Martin Leiner, Oliver W. Lembcke, Tilman Reitz and Manfred Walther. German description: Ein Kommentar zu Spinozas letztem Werk Tractatus politicus war bislang ein Desiderat. Spinozas Theorie der Politik, des Staates und des Rechts ist anders als seine Metaphysik und seine Religionsphilosophie im deutschsprachigen Bereich lange wenig beachtet worden. Erst in jungerer Zeit ist die Beschaftigung mit Spinozas politischer Philosophie auch in Deutschland wieder intensiver geworden. Nach einer Bestimmung des Ortes der Politischen Philosophie und stets im Kontext von Spinozas Gesamtwerk kommentiert der Band zunachst Spinozas Theorie der naturlichen Genese von Recht und Staat, so die Grundlagen der politischen Philosophie, das Verhaltnis von naturlichem und staatlichem Recht, die Theorie der Souveranitat und der internationalen Beziehungen. Auf dieser Grundlage folgt dann seine Konzeption einer Optimierung des Systems politisch-rechtlicher Institutionen fur alle drei Regierungsformen. Abschliessend werden die Aktualitat des Denkens Spinozas und sein Einfluss auf gegenwartige Debatten analysiert. Mit Beitragen von: Tilman Altwicker, Wolfgang Bartuschat, Tobias Herbst, G unnar Hindrichs, Rainer Keil, Stephan Kirste, Martin Leiner, Oliver W. Lembcke, Tilman Reitz, Manfred Walther. (shrink)

In September 1998 the Bundesrztekammer, i.e., the German Medical Association, published new principles concerning terminal medical care. Even before publication, a draft of these principles was very controversial, and prompted intense public debate in the mass media. Despite some of the critics' suspicions that the principles prepared the way for liberalization of active euthanasia, euthanasia is unequivocally rejected in the principles. Physician-assisted suicide is considered to violate professional medical rules. In leaving aside some of the notions customarily used in the (...) euthanasia debate, e.g., passive euthanasia, the principles emphasize the obligation of physicians to offer and the right of patients to receive palliative care. The principles explicitly list modalities of basic treatment that are indispensable in all cases, such as the obligation to satisfy hunger and thirst. This statement is meant to resolve the dispute on nutrition and hydration at the end of life, as it shifts the focus of care from maintaining physiological parameters to satisfying subjective needs. For patients in a persistent vegetative state, artificial feeding is held to be obligatory. Yet, the principles make reference to recent German jurisdiction which permit the stopping of artificial feeding if it is in accordance with the patient's presumed will. Additionally, the wording concerning this issue is found to remain unclear. Patients' autonomy is strengthened by explicitly welcoming advance directives as a means to ascertain patients' wills. The principles mark some changes compared to earlier documents. They deserve careful analysis and should be considered in the international debate on issues concerning the end of life. (shrink)

It has been shown that, when observing an action, infants can rely on either outcome selection information (i.e., actions that express a choice between potential outcomes) or means selection information (i.e., actions that are causally efficient toward the outcome) in their goal attribution. However, no research has investigated the relationship between these two types of information when they are present simultaneously. In an experiment that addressed this question directly, we found that when outcome selection information could disambiguate the goal of (...) the action (e.g., the action is directed toward one of two potential targets), but means selection information could not (i.e., the action is not efficiently adjusted to the situational constraints), 7- and 9-month-old infants did not attribute a goal to an observed action. This finding suggests that means selection information takes primacy over outcome selection information. The early presence of this bias sheds light on the nature of the notion of goal in action understanding. (shrink)

Determining the knowledge that guides human judgments is fundamental to understanding how people reason, make decisions, and form predictions. We use an experimental procedure called ‘‘iterated learning,’’ in which the responses that people give on one trial are used to generate the data they see on the next, to pinpoint the knowledge that informs people's predictions about everyday events (e.g., predicting the total box office gross of a movie from its current take). In particular, we use this method to discriminate (...) between two models of human judgments: a simple Bayesian model (Griffiths & Tenenbaum, 2006) and a recently proposed alternative model that assumes people store only a few instances of each type of event in memory (MinK; Mozer, Pashler, & Homaei, 2008). Although testing these models using standard experimental procedures is difficult due to differences in the number of free parameters and the need to make assumptions about the knowledge of individual learners, we show that the two models make very different predictions about the outcome of iterated learning. The results of an experiment using this methodology provide a rich picture of how much people know about the distributions of everyday quantities, and they are inconsistent with the predictions of the MinK model. The results suggest that accurate predictions about everyday events reflect relatively sophisticated knowledge on the part of individuals. (shrink)

In this paper, we present a generic format for adaptive vague logics. Logics based on this format are able to (1) identify sentences as vague or non-vague in light of a given set of premises, and to (2) dynamically adjust the possible set of inferences in accordance with these identifications, i.e. sentences that are identified as vague allow only for the application of vague inference rules and sentences that are identified as non-vague also allow for the application of some extra (...) set of classical logic rules. The generic format consists of a set of minimal criteria that must be satisfied by the vague logic in casu in order to be usable as a basis for an adaptive vague logic. The criteria focus on the way in which the logic deals with a special ⊡-operator. Depending on the kind of logic for vagueness that is used as a basis for the adaptive vague logic, this operator can be interpreted as completely true, definitely true, clearly true , etc. It is proven that a wide range of famous logics for vagueness satisfies these criteria when extended with a specific ⊡-operator, e.g. fuzzy basic logic and its well known extensions, cf. [7], super- and subvaluationist logics, cf. [6], [9], and clarity logic, cf. [13]. Also a fuzzy logic is presented that can be used for an adaptive vague logic that can deal with higher-order vagueness. To illustrate the theory, some toy-examples of adaptive vague proofs are provided. (shrink)

In this paper, we present a generic format for adaptive vague logics. Logics based on this format are able to (1) identify sentences as vague or non-vague in light of a given set of premises, and to (2) dynamically adjust the possible set of inferences in accordance with these identifications, i.e. sentences that are identified as vague allow only for the application of vague inference rules and sentences that are identified as non-vague also allow for the application of some extra (...) set of classical logic rules. The generic format consists of a set of minimal criteria that must be satisfied by the vague logic in casu in order to be usable as a basis for an adaptive vague logic. The criteria focus on the way in which the logic deals with a special ⊡-operator. Depending on the kind of logic for vagueness that is used as a basis for the adaptive vague logic, this operator can be interpreted as completely true, definitely true, clearly true, etc. It is proven that a wide range of famous logics for vagueness satisfies these criteria when extended with a specific ⊡-operator, e.g. fuzzy basic logic and its well known extensions, cf. [7], super- and subvaluationist logics, cf. [6], [9], and clarity logic, cf. [13]. Also a fuzzy logic is presented that can be used for an adaptive vague logic that can deal with higher-order vagueness. To illustrate the theory, some toy-examples of adaptive vague proofs are provided. (shrink)

Philosophy, perhaps more than any other academic discipline, likes to reflect upon itself. Thus, it is no surprise that philosophers regularly ask questions such as: What is the scope of philosophy, what are its important questions, and what are the proper methods to address them? Asking these questions also means to take stock and to enquire where the discipline is going. This is an especially worthwhile activity in contemporary philosophy of science as this field has been changing rapidly since its (...) institutional consolidation in the 1950s. For present purposes we may very roughly, but still usefully, describe this change as having three phases. In the first phase, which lasted until the mid 1960s, philosophy of science was dominated by Logical Empiricism and formal approaches to philosophically analyzing science. The second phase began in the late 1960s and lasted until the second half of the 1980s. It brought the naturalistic turn, a critique of the Logical Empiricist’s picture of science as too far away from the actual practice of science, a focus on the history and the social structure of science, a shift from theories as the primary target of philosophical analysis to models and experimental practices, and many detailed case studies. While the Logical Empiricists gave us a grand general picture of science, the naturalists’ working assumption has been that aiming at such a picture underappreciates the complexity and diversity of real science. Moreover, the naturalists moved normative questions into the background. In the third phase, which began in the late 1980s, the dichotomy between normative and descriptive approaches in philosophy of science still persists, but the picture has become even more complex. So we can only list a number of novel trends: Metaphysical questions, which were famously dismissed by the Logical Empiricists, are gaining a considerable interest. Philosophies of the special sciences are booming, and more and more subdisciplines are emerging. Formal epistemologists are applying a variety of mathematical methods to address normative questions in general philosophy of science. Social aspects of science are systematically studied and mathematically modeled. Another interesting development is the rise of experimental approaches to problems from philosophy of science (e.g., causation) and its combination with formal approaches. This (incomplete) list shows that contemporary philosophers of science address a large variety of topics. They also use many different methods, quite similar to scientists who often use a combination of methods, or import a method from another field to solve their problems. This is, to our mind, a fruitful way of conducting “scientific philosophy”: a proper combination of conceptual analysis, historical or contemporary case studies, formal modeling, and experimental work that will lead to many new and exciting insights. (shrink)

Overweight and obesity among children and adolescents are global problems of our time. Due to their authority and role modeling, parents play an essential part in the efficacy of prevention and intervention programs. This study assessed the barriers that parents of overweight/obese children face in preventive and interventional health care utilization. Sixteen parents were qualitatively interviewed. A content analysis was performed, and barriers to change were allocated to their stage of change according to the transtheoretical model. Among the main barriers (...) is the underestimation of health risks caused by overweight/obesity in association with diminished problem awareness. Parents seem not necessarily in need of theoretical knowledge for prevention and interventions. They do however need support in evaluating the weight status of their child and the knowledge of whom to turn to for help as well as specific and hands-on possibilities for change. The results extend past studies by adding specific barriers to change that parents commonly experience. Possibilities to address these barriers, e.g., through trainings at the pediatric practice or adoption of conversation techniques, are discussed. Future studies might identify subgroups experiencing specific barriers and thus be able to address these in an individualized way. (shrink)

Current views of the control of complex, purposeful movements acknowledge that organizational processes must reconcile multiple concerns. The central priority is of course accomplishing the actor's goal. But in specifying the manner in which this occurs, the action plan must accommodate such factors as the interaction of mechanical forces associated with the motion of a multilinked system (classical mechanics) and, in many cases, intrinsic bias toward preferred movement patterns, characterized by so‐called “coordination dynamics.” The most familiar example of the latter (...) is the symmetry constraint, where spatial trajectories and/or temporal landmarks (e.g., reversal points) of concurrentlymoving body segments (limbs, digits, etc.) exhibit mutual attraction. The natural coordination tendencies that emerge through these constraints can facilitate or hinder motor control, depending on the degree of congruency with the desired movement pattern. Motor control theorists have long recognized the role of classical mechanics in theories of movement organization, but an appreciation of the importance of intrinsic interlimb bias has been gained only recently.Although detailed descriptions of temporal coordination dynamics have been provided, systematic attempts to identify additional salient dimensions of interlimb constraint have been lacking. We develop and implement here a novel method for examining this problem by exploiting two robust principles of psychomotor behavior, the symmetry constraint and the Two‐Thirds Power Law. Empirical evidence is provided that the relative spatial patterns of concurrently moving limbs are naturally constrained in much the same manner as previously identified temporal constraints and, further, that apparent velocity interference is an indirect, secondary consequence of primary spatial assimilation. The theoretical implications of spatial interference are elaborated with respect to movement organization and motor learning. The need to carefully consider the appropriate dimensions with which to characterize coordination dynamics is also discussed. (shrink)

Bei der Suche nach dem Geist handelt es sich seit Jahrhunderten um ein zentrales Unterfangen in der Philosophie, das u.a. durch die folgenden Fragen charakterisiert ist: Was sind Merkmale des Geistes? Welche Arten geistiger Zustände lassen sich unterscheiden? Ist eine naturwissenschaftliche oder physikalische Erklärung des Geistes möglich? Lässt sich das Geistige auf das Physikalische reduzieren? Ist das Physikalische kausal abgeschlossen? Was heißt es eigentlich, dass etwas physikalisch ist? Wie kann der Geist Handlungen bewirken? Können wir denn so handeln, wie wir (...) wollen? Ist unser Wille frei? Welche Rolle spielen neurowissenschaftliche Ergebnisse für die Entwicklung einer guten Theorie des Geistes? Und welche Rolle spielen philosophische Gedankenexperimente? Was macht überhaupt eine gute Theorie des Geistes aus? Dieser Band, der auch an Einsteiger gerichtet ist, versammelt Beiträge zur Suche nach dem Geist von Andreas Hüttemann, Holger Lyre, Jan G. Michel, Gernot Münster, Martine Nida-Rümelin, Achim Stephan und Henrik Walter. (shrink)

Game theory is usually considered applied mathematics, but a few game‐theoretic results, such as Borel determinacy, were developed by mathematicians for mathematics in a broad sense. These results usually state determinacy, i.e., the existence of a winning strategy in games that involve two players and two outcomes saying who wins. In a multi‐outcome setting, the notion of winning strategy is irrelevant yet usually replaced faithfully with the notion of (pure) Nash equilibrium. This article shows that every determinacy result over an (...) arbitrary game structure, e.g., a tree, is transferable into existence of multi‐outcome (pure) Nash equilibrium over the same game structure. The equilibrium‐transfer theorem requires cardinal or order‐theoretic conditions on the strategy sets and the preferences, respectively, whereas counter‐examples show that every requirement is relevant, albeit possibly improvable. When the outcomes are finitely many, the proof provides an algorithm computing a Nash equilibrium without significant complexity loss compared to the two‐outcome case. As examples of application, this article generalises Borel determinacy, positional determinacy of parity games, and finite‐memory determinacy of Muller games. (shrink)

The interdisciplinary field of astrobiology constitutes a joint arena where provocative discoveries are coalescing concerning, e.g. the prevalence of exoplanets, the diversity and hardiness of life, and its chances for emergence. Biologists, astrophysicists, (bio)-chemists, geoscientists and space scientists share this exciting mission of revealing the origin and commonality of life in the Universe. With its overview articles and its definitions the Encyclopedia of Astrobiology not only provides a common language and understanding for the members of the different disciplines but also (...) serves for educating a new generation of young astrobiologists who are no longer separated by the jargon of individual scientific disciplines. -/- This new edition offers ~170 new entries. More than half of the existing entries were updated, expanded or supplemented with figures supporting the understanding of the text. Especially in the fields of astrochemistry and terrestrial extremophiles but also in exoplanets and space sciences in general there is a huge body of new results that have been taken into account in this new edition. (shrink)

Student sex work is a current phenomenon all over the world, increasingly reported by the media in recent years. However, student sex work remains under-researched in Germany and is lacking direct first-hand reports from the people involved. Further, sex work remains stigmatized, and therefore, students practicing it could be at risk of social isolation and emotional or physical danger. Therefore, this study examines students working in the sex industry focusing on their personal experiences and attitudes toward them. An online questionnaire (...) was completed by 4386 students from Berlin universities. Students who identified themselves as sex workers were questioned with respect to their motivations to enter the sex industry, characteristics of their job, feelings after the intercourse, and perceived risks. Student non-sex workers were questioned regarding knowledge of and attitudes toward student sex workers. Most student sex workers reported that they entered the sex industry due to financial reasons. The majority reported offering services involving direct sexual intercourse. Disclosing their job to friends, family, or others was associated with less problems with social isolation and in romantic relationships. With a total of 22.9%, student non-sex workers reported never having heard about students working in the sex industry. The most frequent emotions mentioned by them with regard to student sex workers were compassion and dismay. There was no difference in happiness between student sex workers and non-sex working students. Through this research, it becomes evident that there are similarities between the student’s motivations to enter the sex industry, their feelings, and the problems they have to face. Moreover, prejudices still prevail about the life of student sex workers. Increasing understanding of student sex work might help those sex workers to live a less stigmatized life and thereby to make use of support from others. The universities as institutions could form the basis for this, e.g., by openly supporting student sex workers. This could help to encourage the rights of student sex workers and to gain perspective with respect to the sex industry. (shrink)

Social standards have become important tools in corporate governance. They are often presented as voluntary initiatives in CSR and are generally based on the principle of multi-stakeholder collaboration as a means to gain legitimacy. Yet, based on a case study of a company in the textile industry, the paper shows that not all CSR standards are equally valued and that the adoption of particular CSR standards can be the result of external constraints on managerial discretion, e.g. emerging from business partners (...) and activist groups. (shrink)

An infinite binary sequence X is Kolmogorov–Loveland random if there is no computable non-monotonic betting strategy that succeeds on X in the sense of having an unbounded gain in the limit while betting successively on bits of X. A sequence X is KL-stochastic if there is no computable non-monotonic selection rule that selects from X an infinite, biased sequence.One of the major open problems in the field of effective randomness is whether Martin-Löf randomness is the same as KL-randomness. Our first (...) main result states that KL-random sequences are close to Martin-Löf random sequences in so far as every KL-random sequence has arbitrarily dense subsequences that are Martin-Löf random. A key lemma in the proof of this result is that for every effective split of a KL-random sequence at least one of the halves is Martin-Löf random. However, this splitting property does not characterize KL-randomness; we construct a sequence that is not even computably random such that every effective split yields two subsequences that are 2-random. Furthermore, we show for any KL-random sequence A that is computable in the halting problem that, first, for any effective split of A both halves are Martin-Löf random and, second, for any computable, nondecreasing, and unbounded function g and almost all n, the prefix of A of length n has prefix-free Kolmogorov complexity at least n−g. Again, the latter property does not characterize KL-randomness, even when restricted to left-r.e. sequences; we construct a left-r.e. sequence that has this property but is not KL-stochastic and, in fact, is not even Mises–Wald–Church stochastic.Turning our attention to KL-stochasticity, we construct a non-empty class of KL-stochastic sequences that are not weakly 1-random; by the usual basis theorems we obtain such sequences that in addition are left-r.e., are low, or are of hyperimmune-free degree.Our second main result asserts that every KL-stochastic sequence has effective dimension 1, or equivalently, a sequence cannot be KL-stochastic if it has infinitely many prefixes that can be compressed by a factor of α<1. This improves on a result by Muchnik, who has shown that were they to exist, such compressible prefixes could not be found effectively. (shrink)

We examine the concept of almost everywhere domination from the viewpoint of mass problems. Let AED and MLR be the sets of reals which are almost everywhere dominating and Martin-Löf random, respectively. Let b1, b2, and b3 be the degrees of unsolvability of the mass problems associated with AED, MLR × AED, and MLR ∩ AED, respectively. Let [MATHEMATICAL SCRIPT CAPITAL P]w be the lattice of degrees of unsolvability of mass problems associated with nonempty Π01 subsets of 2ω. Let 1 (...) and 0 be the top and bottom elements of [MATHEMATICAL SCRIPT CAPITAL P]w. We show that inf, inf, and inf belong to [MATHEMATICAL SCRIPT CAPITAL P]w and 0 < inf < inf < inf < 1. Under the natural embedding of the recursively enumerable Turing degrees into [MATHEMATICAL SCRIPT CAPITAL P]w, we show that inf and inf but not inf are comparable with some recursively enumerable Turing degrees other than 0 and 0′. In order to make this paper more self-contained, we exposit the proofs of some recent theorems due to Hirschfeldt, Miller, Nies, and Stephan. (shrink)

Does y obtain under the counterfactual supposition that x? The answer to this question is famously thought to depend on whether y obtains in the most similar world in which x obtains. What this notion of ‘similarity’ consists in is controversial, but in recent years, graphical causal models have proved incredibly useful in getting a handle on considerations of similarity between worlds. One limitation of the resulting conception of similarity is that it says nothing about what would obtain were the (...) causal structure to be different from what it actually is, or from what we believe it to be. In this paper, we explore the possibility of using graphical causal models to resolve counterfactual queries about causal structure by introducing a notion of similarity between causal graphs. Since there are multiple principled senses in which a graph G* can be more similar to a graph G than a graph G**, we introduce multiple similarity metrics, as well as multiple ways to prioritize the various metrics when settling counterfactual queries about causal structure. (shrink)

Originally published in 1921, updated in 1932 and re-issued in 1966 with an introduction by Stephan Körner, this book remains a classic introduction to the study of ethics. It clearly explains both the Aristotelian and the Kantian approach to ethical problems, by combining the advantages of a historical and systematic introduction. Much of the book is devoted to Aristotle and Kant, whose moral theories are important and who are influential forces in contemporary moral philosophy.

A recursive enumerator for a function h is an algorithm f which enumerates for an input x finitely many elements including h(x), f is a k(n)-enumerator if for every input x of length n, h(x) is among the first k(n) elements enumerated by f. If there is a k(n)-enumerator for h then h is called k(n)-enumerable. We also consider enumerators which are only A-recursive for some oracle A. We determine exactly how hard it is to enumerate the Kolmogorov function, which (...) assigns to each string x its Kolmogorov complexity: • For every underlying universal machine U, there is a constant a such that C is k(n)-enumerable only if k(n) ≥ n/a for almost all n. • For any given constant k, the Kolmogorov function is k-enumerable relative to an oracle A if and only if A is at least as hard as the halting problem. • There exists an r.e., Turing-incomplete set A such for every non-decreasing and unbounded recursive function k, the Kolmogorov function is k(n)-enumerable relative to A. The last result is obtained by using a relativizable construction for a nonrecursive set A relative to which the prefix-free Kolmogorov complexity differs only by a constant from the unrelativized prefix-free Kolmogorov complexity. Although every 2-enumerator for C is Turing hard for K, we show that reductions must depend on the specific choice of the 2-enumerator and there is no bound on the quantity of their queries. We show our negative results even for strong 2-enumerators as an oracle where the querying machine for any x gets directly an explicit list of all hypotheses of the enumerator for this input. The limitations are very general and we show them for any recursively bounded function g: • For every Turing reduction M and every non-recursive set B, there is a strong 2-enumerator f for g such that M does not Turing reduce B to f. • For every non-recursive set B, there is a strong 2-enumerator f for g such that B is not wtt-reducible to f. Furthermore, we deal with the resource-bounded case and give characterizations for the class ${\rm S}_{2}^{{\rm P}}$ introduced by Canetti and independently Russell and Sundaram and the classes PSPACE, EXP. • ${\rm S}_{2}^{{\rm P}}$ is the class of all sets A for which there is a polynomially bounded function g such that there is a polynomial time tt-reduction which reduces A to every strong 2-enumerator for g. • PSPACE is the class of all sets A for which there is a polynomially bounded function g such that there is a polynomial time Turing reduction which reduces A to every strong 2-enumerator for g. Interestingly, g can be taken to be the Kolmogorov function for the conditional space bounded Kolmogorov complexity. • EXP is the class of all sets A for which there is a polynomially bounded function g and a machine M which witnesses A ∈ PSPACEf for all strong 2-enumerators f for g. Finally, we show that any strong O(log n)-enumerator for the conditional space bounded Kolmogorov function must be PSPACE-hard if P = NP. (shrink)

A new etiological model is proposed for schizophrenia that combines variability‐enhancing nonspecific factors acting during development with more specific risk factors. This model is better suited than the current etiological models of schizophrenia, based on the risk factors paradigm, for predicting and/or explaining several important findings about schizophrenia: high co‐morbidity rates, low specificity of many risk factors, and persistence in the population of the associated genetic polymorphisms. Compared with similar models, e.g., de‐canalization, common psychopathology factor, sexual‐selection, or differential sensitivity to (...) the environment, this proposal is more general and integrative. Recently developed research methods have proven the existence of genetic and environmental factors that enhance developmental variability. Applying such methods to newly collected or already available data can allow for testing the hypotheses upon which this model is built. If validated, this model may change the understanding of the etiology of schizophrenia, the research models, and preventionbrk paradigms. (shrink)

In this paper, we address the question of what current computers are from the point of view of human-computer interaction. In the early days of computing, the Turing machine (TM) has been the cornerstone of the understanding of computers. The TM defines what can be computed and how computation can be carried out. However, in the last decades, computers have evolved and increasingly become interactive systems, reacting in real-time to external events in an ongoing loop. We argue that the TM (...) does not provide a mechanistic explanation for interactive computing. The reason is that the fundamental phenomena relevant to interactive computing are out of the scope of classical computability theory. Part of the explanatory power of the TM relies on what we propose to call an execution model. An execution model belongs to a level of abstraction where it is possible to describe both the functional architecture and the execution in mechanistic terms. An updated execution model is warranted to provide the minimal mechanistic description for interactive computation as a counterpart of what the TM could explain regarding Church-Turing computation. It would support an explanation of the ubiquitous computing devices we know - those interacting with humans, e.g., through digital interfaces. We show that such a model is not available within interactive models of computation and that relevant abstractions and concerns are available in computer engineering but need to be identified and gathered. To fill this void, we propose to reflect on the level of abstraction required to support the mechanistic description of an interactive execution and propose some preliminary requirements. (shrink)

These papers originated as lectures, three each by Stephan Kröner, [[sic]] Martinus Versfeld, A. J. Ayer, Stephen Pepper, and O. K. Bouswma, [[sic]] in a year-long series at the University of Notre Dame. Kröner [[sic]] and Pepper see philosophy in terms of conceptual structures, Kröner [[sic]] as the production of "categorial frameworks" and Pepper as the systematization of an intuition he calls a "root metaphor." Versfeld says philosophy is Socratic dialectic, that is, the light-hearted testing of hypotheses. For Ayer, (...) philosophy is analysis aimed at reconstructing the unsatisfactory presuppositions of common sense. Bouswma [[sic]] offers three demonstrations of how philosophical problems are dissolved by showing them to be instances of the misuse of words. Interested readers may wish to look at papers on this topic by Rorty, MacQuarrie, Harris, and Johann, read at Notre Dame in the spring of 1967 and published in the Proceedings of the American Catholic Philosophical Association.--L. G. (shrink)

While the literature in business ethics abounds with philosophical analyses, perspectives from religious thinkers are curiously underrepresented. What religious analysis has occured has often been moralistic in tone, more fit to the pulpit than the classroom or the boardroom. In the three essays that follow, presented originally at a panel at the Annual Meeting of the American Academy of Religion in 1989, ethicists from the Protestant, Roman Catholic, and Jewish traditions analyze a case study familiar to many who teach and (...) research in business ethics — the Consolidated Foods Case. Each author shows how a particular religious tradition might react to the case. The authors show how insights from their traditions would affect corporation's moral deliberations about policy. Specific policy recommendations are offered to CEO John Bryan. (shrink)