Grammatical Evolution (GE) has a long history in evolutionary computation. Central to the behaviour of GE is the use of a linear representation and grammar to map individuals from search spaces into problem spaces. This genotype to phenotype mapping is often argued as a distinguishing property of GE relative to other techniques, such as context-free grammar genetic programming (CFG-GP). Since its initial description, GE research has attempted to incorporate information from the grammar into crossover, mutation, and individual initialisation, blurring the (...) distinction between genotype and phenotype and creating GE variants closer to CFG-GP. This is argued to provide GE with the "best of both worlds", allowing degrees of grammatical bias to be introduced into operators to best suit the given problem. This paper examines the behaviour of three grammar-based search methods on several problems from previous GE research. It is shown that, unlike CFG-GP, the performance of "pure" GE on the examined problems closely resembles that of random search. The results suggest that further work is required to determine the cases where the "best of both worlds" of GE are required over a straight CFG-GP approach. (shrink)

In their substantive introduction, the editors first revisit two classical sites of controversy which have offered frameworks for theorizing the interplay between materiality and sociality: reification and fetishism. Obviously, these critical vocabularies emerge as crucial sites of perplexity as soon as the ontological boundary between subjects and objects is rendered equally problematic and fluid as the epistemological boundary between the imaginary and the real. A thumbnail sketch of the history of the two discursive traditions (from Marxism up to Actor Network (...) Theory) provides an elaborate systematic framework for introducing the individual articles. The first axis of debate is generated by conceptual residues of the traditional tug-of-war between idealism and materialism which continues to infiltrate recent redescriptions of the web of sociality/materiality. The concern here is how much autonomy and agency can be granted to material objects in view of their social inscription and symbolic construction, and how far conceptual experiments with the ontological symmetry between humans and nonhumans may take us and/or should be permitted to go. The second axis of debate concerns the fate of critical theory and of ethico-political sensibility in the face of heightened uncertainties about the distinction between what is real, what is constructed, and what is imaginary, and between what may count as a person and what as a thing. (shrink)

This article recovers the importance of film, and its relations to other media, in communicating the philosophies and methods of ‘natural childbirth’ in the post-war period. It focuses on an educational film made in South Africa around 1950 by controversial British physician Grantly Dick-Read, who had achieved international fame with bestselling books arguing that relaxation and education, not drugs, were the keys to freeing women from pain in childbirth. But he soon came to regard the ‘vivid’ medium of film (...) as a more effective means of disseminating the ‘truth of [his] mission’ to audiences who might never have read his books. I reconstruct the history of a film that played a vital role in teaching Dick-Read's method to both the medical profession and the first generation of Western women to express their dissatisfaction with highly drugged, hospitalized maternity care. The article explains why advocates of natural childbirth such as Dick-Read became convinced of the value of film as a tool for recruiting supporters and discrediting rivals. Along the way, it offers insight into the British medical film industry and the challenges associated with producing, distributing and screening a depiction of birth considered unusually graphic for the time. (shrink)

In lieu of an abstract, here is a brief excerpt of the content:Setting the Scientific Bar for the Genetics of BehaviorEric Turkheimer, PhD (bio) and Sarah Rodock Greer, BA (bio)We are grateful for the opportunity to respond to such a varied and challenging set of commentaries. They range from highly supportive to quite disputatious; we will repay the supportive ones ironically, by discussing them only briefly. That will allow us to expand a bit on the more difficult comments, and of (...) course the thoughtful reply from Dr. Dick.Knox, Allen, and DownesKnox, Allen, and Downes imagine a world in which effective polygenic scores for alcohol use exist and conclude that even then there would be no way to use them ethically. We agree, for the most part, but there are several distinctions to consider. The first is among physical, medical, psychiatric, and normal-range behavioral phenotypes. Effective polygenic scores exist for height, and to a somewhat lesser extent for medical conditions like coronary heart disease. Whether or not it is a good idea to deploy them in embryo selection or clinical medicine, that is already happening.We do not think an R2 of 0.35 polygenic scores for complex behavioral phenotypes will ever exist, for all the reasons we outlined in the original paper. If we allow ourselves to imagine it happening, however, there are two explanatory pathways to follow. The first is the raw R2, and let’s stipulate that with more enormous samples or exome sequencing or whatever, respectable values are eventually achieved. The second involves the causal validity underlying black-box prediction. Scientists are taking the first step down that path (although not in Spit for Science [S4S], see the reply below to Lee and Morris) by investigating direct and indirect effects between and within families and examining the portability of polygenic scores (PGS) across environments and ancestries. The most convincing causal evidence would involve the kind of mechanistic causal biology about which enthusiasts like to speculate, but there is little sign of that.We will grant another possibility. Suppose there was a PGS for alcohol at an R2 of 0.35 that worked between families and within them, in [End Page 455] North America, South Asia, Central America, and West Africa. Animal models confirmed that it is related to specific metabolic pathways involved in alcohol. It was related but not identical to other successful PGS that predict cannabis use and other addictions. Ancient DNA studies find that it is high in human remains that were preserved next to the casks of wine that they apparently loved. Pharmacologists use it to develop effective medications for withdrawal. This hypothetical PGS, mechanistically opaque though it might remain, would exist in what Cronbach and Meehl (1955) called a nomological network. It would have construct validity, similar to a good self-report questionnaire. Like PGS for coronary heart disease, people would want to have access to construct valid PGS, and there would probably be no way to prevent people from obtaining them. We repeat that we do not expect this to happen, and as we discuss in the response to Dick below, hypothetical discussions of future scientific outcomes usually turn out to be unscientific wishcasting. It is like insisting that cities need to develop traffic control systems for flying cars.SadlerSadler is probably correct that the exigencies of grant funding explain much of what we have observed in S4S. It is certainly a more charitable explanation than the alternatives. It is interesting to consider that one of several revolutions that have occurred in the years since S4S was conceived is in the realm of scientific design and reporting. Preregistration of research hypotheses might have prevented many of the more dubious outcomes of S4S. Yet those ideas have never been applied to grant proposals, as far as we know. Grant reviews reward grandiose promises. No one has ever received funding for announcing that they hope to make incremental progress at the margins of a difficult and perhaps intractable problem. There is no mechanism to check on whether the big promises in proposals were ever fulfilled. What does get checked is whether and where investigators have published, often without regard to what the... (shrink)

This article addresses the question whether and how literary documents can be used to further our understanding of a number of key issues on the agenda of the philosophy of biology such as “complexity” and “reductionism”. Kant already granted a certain respectability to aesthetical experiences of nature in his third Critique. Subsequently, the philosophical movement known as phenomenology often used literary sources and literary techniques to criticize and question mainstream laboratory science. The article discusses a number of literary documents, from (...) Moby-Dick to Jurassic Park, that explicitly stage a confrontation between scientific and non-scientific ways of experiencing and understanding the natural world. Special attention is given to the work of Michael Crichton. Its relevance for the philosophy of biology is pointed out. (shrink)

Fitness is a central concept in evolutionary theory. Just as it is central to biological evolution, so, it seems, it should be central to cultural evolutionary theory. But importing the biological fitness concept to CET is no straightforward task—there are many features unique to cultural evolution that make this difficult. This has led some theorists to argue that there are fundamental problems with cultural fitness that render it hopelessly confused. In this essay, we defend the coherency of cultural fitness against (...) those who call it into doubt. (shrink)

One contentious debate in the philosophy of biology is that between the statisticalists and causalists. The former understand core evolutionary concepts like fitness and selection to be mere statistical summaries of underlying causal processes. In this view, evolutionary changes cannot be causally explained by selection or fitness. The causalist side, on the other hand, holds that populations can change in response to selection—one can cite fitness differences or driftability in causal explanations of evolutionary change. But, on the causalist side, it (...) is often not clear how, precisely, one should understand these causes. Thus, much more could be said about what sort of causes fitness and driftability are. In this paper, I borrow Dretske's distinction between structuring and triggering causes and I suggest that fitness and driftability are structuring causes of evolution. (shrink)

Little attention has been paid to the importance of social media in the corporate social responsibility (CSR) literature. This deficit is redressed in the present paper through utilizing the notion of ‘citizenship arenas’ to identify three dynamics in social media-augmented corporate–society relations. First, we note that social media-augmented ‘corporate arenas of citizenship’ are constructed by individual corporations in an effort to address CSR issues of specific importance thereto, and are populated by individual citizens as well as (functional/formally organized) stakeholders. Second, (...) we highlight that, within social media-augmented ‘public arenas of citizenship’, individual citizens are empowered, relative to corporations and their (functional/formally organized) stakeholders, when it comes to creating, debating, and publicizing, CSR-relevant issues. Third, we posit that information and communication technology corporations possess specific, and potentially very important, capacities, when it comes to creating, or helping construct, public arenas of citizenship from within which individual citizens can influence their broader political–economic environment. Following this, we discuss how social media can contribute to ‘dysfunctions’ as well as ‘progressions’ in corporate–society relations, and conclude with a number of suggestions for future research. (shrink)

Evolutionary biology since Darwin has seen a dramatic entrenchment and elaboration of the role of chance in evolution. It is nearly impossible to discuss contemporary evolutionary theory in any depth at all without making reference to at least some concept of “chance” or “randomness.” Many processes are described as chancy, outcomes are characterized as random, and many evolutionary phenomena are thought to be best described by stochastic or probabilistic models. Chance is taken by various authors to be central to the (...) understanding of fitness, genetic drift, macroevolution, mutation, foraging theory, and environmental variation, to take but a few examples. And for each of these notions, there are yet more stories to tell. Each weaves itself into the various branches of evolutionary theory in myriad different ways, with a wide variety of effects on the history and current state of life on Earth. Each is grounded in a particular trajectory in the history of philosophy and the history of biology, and has inspired a variety of responses throughout science and culture. This book endeavors to offer a cross-section of biological, historical, philosophical, and theological approaches to understanding chance in evolutionary theory. (shrink)

Are all God’s activities identical to God? If not, which are identical to God and which not? Although it is seldom noticed, the texts of Aquinas (at least on the surface) suggest conflicting answers to these questions, giving rise to a diversity of opinion among interpreters of Aquinas. In this paper, we draw attention to this conflict and offer what we believe to be the strongest textual and speculative support for and against each of the main answers to these questions.

Incentives are typically conceived as a form of trade, and so voluntariness appears to be the only ethical concern. As a consequence, incentives are often considered ethically superior to regulations because they are voluntary rather than coercive. But incentives can also be viewed as one way to get others to do what they otherwise would not; that is, as a form of power. When incentives are viewed in this light, many ethical questions arise in addition to voluntariness: What are the (...) responsibilities of the powerful in using incentives? Can incentives be manipulative or exploitative, even if people are free to refuse them? Like all other forms of power, incentives can be abused. This paper develops criteria for distinguishing their legitimate from their illegitimate uses, viz. legitimacy of purpose, voluntariness, and effect on character. The criteria are then applied to three cases: plea bargaining, recruiting medical research subjects, and motivating children to learn. Thinking of incentives in terms of.. (shrink)

In a recent paper, Nicholas Stang argues that artworks are not valuable for their own sake in virtue of their artistic value, artworks have artistic value in virtue of the final value of the experiences they afford, and the only appropriate objects of appreciation are worktypes. All of these arguments rest on claims about the artistic value of copies of artworks that provide a radical challenge to the views that many philosophers have about copies. Here I argue that Stang's arguments (...) are unsuccessful. The argument for is mistaken about what one is committed to if one thinks artworks are valuable for their own sake in virtue of their artistic value. The defense of fails to explain what it is supposed to explain. The argument for overgeneralizes from one kind of case. Finally, the basic claim Stang makes about the artistic value of copies is false. I defend an alternative view. I conclude by discussing the implications of my arguments for experientialism ). Reflection on the cases Stang considers, far from leading us to embrace experientialism, in fact reveals problems that experientialists need to confront. (shrink)

We study the modal properties of intuitionistic modal logics that belong to the provability logic or the preservativity logic of Heyting Arithmetic. We describe the □-fragment of some preservativity logics and we present fixed point theorems for the logics iL and iPL, and show that they imply the Beth property. These results imply that the fixed point theorem and the Beth property hold for both the provability and preservativity logic of Heyting Arithmetic. We present a frame correspondence result for the (...) preservativity principle Wp that is related to an extension of Löb's principle. (shrink)

ZusammenfassungAusgangspunkt dieses Beitrags ist die Frage, wie die vier ethischen Prinzipien äztlichen Handelns – Respekt vor der Autonomie, Wohlergehen des Patienten, Schadensvermeidung und Gleichbehandlung – in der Berufspraxis realisiert werden können. Am Arzt-Patienten-Verhältnis wird die ethische Grundlegung jedes medizinischen Handelns erläutert, die auch das Lernen aus negativen Behandlungsverläufen umfasst. Um die Möglichkeiten für solche Lernprozesse untersuchen zu können, wird vorab eine Unterscheidung zwischen Fehler und Misserfolg vorgenommen. Als Handlungsansatz zur Aufarbeitung zahnärztlicher Misserfolge wird anhand einer empirischen Studie die Methodik des (...) Triadengesprächs vorgestellt. In diesen Gesprächen wurden 21 Misserfolge aus der Praxis reflektiert und rekonstruiert. Es wird aufgezeigt, ob und wie mit der Methode ein verändertes Verständnis des zahnärztlichen Misserfolgs ermöglicht wurde. Schließlich wird das Verfahren aus der Sicht aller an der Studie beteiligten Zahnärzte evaluiert. Die Ergebnisse der Studie zeigen, dass das Triadengespräch als Möglichkeit des expansiven Lernens eine exponierte Stellung erlangen kann. Das daraus resultierende Erfahrungskapital zahnmedizinischer Praktiker hat sodann Einfluss auf das Professionswissen und lässt gleichzeitig eine offene Kultur zum Lernen aus Misserfolgen entstehen. Abschließend werden die ethischen Implikationen des Umgangs mit Misserfolgen im Kontrast zum Umgang mit Fehlern erörtert. (shrink)

This open access book is a systematic update of the philosophical and scientific foundations of the biopsychosocial model of health, disease and healthcare. First proposed by George Engel 40 years ago, the Biopsychosocial Model is much cited in healthcare settings worldwide, but has been increasingly criticised for being vague, lacking in content, and in need of reworking in the light of recent developments. The book confronts the rapid changes to psychological science, neuroscience, healthcare, and philosophy that have occurred since the (...) model was first proposed and addresses key issues such as the model’s scientific basis, clinical utility, and philosophical coherence. The authors conceptualise biology and the psychosocial as in the same ontological space, interlinked by systems of communication-based regulatory control which constitute a new kind of causation. These are distinguished from physical and chemical laws, most clearly because they can break down, thus providing the basis for difference between health and disease. This work offers an urgent update to the model’s scientific and philosophical foundations, providing a new and coherent account of causal interactions between the biological, the psychological and social. (shrink)

We prove that all extensions of Heyting Arithmetic with a logic that has the finite frame property possess the de Jongh property.

Role congruity theory affirms that female managers face more difficulties at work because of the incongruity between female gender and leadership role expectations. Furthermore, due to this incongruity, it is harder for female managers to perceive themselves as authentic leaders. However, followers’ attributions of prototypicality could attenuate this role incongruity and have implications on a managers’ organizational identification. Hence, we expect male managers to be more authentic and to identify more with their organizations, when compared to female managers who are (...) low in prototypicality. We hypothesized that authentic leadership dimensions mediate the relation between managers’ biological gender and their OID. However, this indirect effect is conditional of these managers' team prototypicality. For testing these hypotheses, we conducted an online experiment with 149 participants from different work sectors using a 2 × 2 between-subject design. As predicted, men scored higher on authentic leadership, and three dimensions partially mediated the effect of participants’ biological gender on OID. In the low team prototypicality condition female managers scored lower in authentic leadership and identified less with the organization, whereas in the high team prototypicality condition, no gender differences were found. (shrink)

One of the earliest issues in cognitive ethology concerned the meaning of animal signals. In the 1970s and 1980s this debate was most active with respect to the question of whether animal alarm calls convey information about the emotional states of animals or whether they “refer” directly to predators in the environment (Seyfarth, Cheney, & Marler 1980; see Radick 2007 for a historical account), but other areas, such as vocalizations about food and social contact, were also widely discussed. In the (...) 1990s, ethologists largely came to a consensus that such calls were “functionally referential” (Evans & Marler 1995) even if they did not satisfy all the semantic requirements imposed by philosophers of language. More recently, though, it has been argued that ethologists should eschew the concept of reference and return to a focus on the affective aspects of animal communication (Rendall & Owren 2002). We propose to take a new look at this debate in the light of recent developments in the philosophy of language under the heading of “Neo-Expressivism” (Bar-On 2004). This view provides two different senses.. (shrink)

The validity and utility of the proximate-ultimate distinction in biology have recently been under debate. Opponents of the distinction argue that it rules out individual-level organismic processes from evolutionary explanations, thereby leading to an unfounded separation between organismic causation and evolutionary causation. Proponents of the proximate-ultimate distinction, on the other hand, argue that it serves an important epistemological role in forming different kinds of explanation-seeking questions in biology. In this paper we offer an interpretation the proximate-ultimate distinction not only as (...) a means of forming explanation-seeking questions, but also as a distinction that can help highlight the way in which individual-level organismic processes can be evolutionary causes. We do this by interpreting the distinction between proximate and ultimate causes as a distinction between structuring and triggering causes. (shrink)

Solovay's 1976 completeness result for modal provability logic employs the recursion theorem in its proof. It is shown that the uses of the recursion theorem can in this proof replaced by the diagonalization lemma for arithmetic and that, in effect, the proof neatly fits the framework of another, enriched, system of modal logic so that any arithmetical system for which this logic is sound is strong enough to carry out the proof, in particular $\text{I}\Delta _{0}+\text{EXP}$ . The method is adapted (...) to obtain a similar completeness result for the Rosser logic. (shrink)

As in other fields, scholarly publication in sociology is not only the key to career success but also the route by which feminist analyses and perspectives become known to others in the discipline. A growing literature has analyzed women's and men's rates of publication, but the gender politics of the prepublication production of research and gender differences in reputation building after publication remain underexplored. This report reviews the current state of knowledge about sociological publishing at three phases: prepublication, the publication-seeking (...) phase, and postpublication. It concludes with critical questions to be addressed in developing a comprehensive model of gender effects on sociological publishing. (shrink)

The problem of Uniqueness and Explicit Definability of Fixed Points for Interpretability Logic is considered. It turns out that Uniqueness is an immediate corollary of a theorem of Smoryński.

A definition is given for formulae $A_1,\ldots,A_n$ in some theory $T$ which is formalized in a propositional calculus $S$ to be (in)dependent with respect to $S$. It is shown that, for intuitionistic propositional logic $\mathbf{IPC}$, dependency (with respect to $\mathbf{IPC}$ itself) is decidable. This is an almost immediate consequence of Pitts' uniform interpolation theorem for $\mathbf{IPC}$. A reasonably simple infinite sequence of $\mathbf{IPC}$-formulae $F_n(p, q)$ is given such that $\mathbf{IPC}$-formulae $A$ and $B$ are dependent if and only if at least (...) on the $F_n(A, B)$ is provable. (shrink)

This essay considers James Baldwin's The Fire Next Time as a philosophical contemplation on love. Drawing on sources such as the Bible, Jacques Derrida, and a host of Baldwin critics, this essay understands the Christian love of The Fire Next Time as asymmetrical. The asymmetry of love derives from its understanding of love as the responsibility to Self and Other that demands no reciprocation. Asymmetrical love makes itself vulnerable before the Other and, most importantly, it is a love that risks (...) itself absolutely by offering love to those who will do violence to the subject who gives love. (shrink)

We propose a notion of a sub-model for each agent at each state in the Heifetz et al. model of interactive unawareness. Presuming that each agent is fully cognizant of his sub-model causes no difficulty and fully describes his knowledge and his beliefs about the knowledge and awareness of others. We use sub-models to motivate the HMS conditions on possibility correspondences.

Background Since the enactment of the euthanasia law in the Netherlands, there has been a lively public debate on assisted dying that may influence the way patients talk about euthanasia and physician-assisted suicide with their physicians and the way physicians experience the practice of EAS. Aim To show what developments physicians see in practice and how they perceive the influence of the public debate on the practice of EAS. Methods We conducted a secondary analysis of in-depth interviews with 28 Dutch (...) physicians who had experience with a complex case of EAS. Respondents were recruited both by the network of physicians working for SCEN as well as via a national questionnaire, wherein participating physicians could indicate their willingness to be interviewed. Results Three themes came up in analysing the interviews. First, the interviewed physicians experienced a change in what patients would expect from them: from a role as an involved caregiver to being the mere performer of EAS. Second, interviewees said that requests for EAS based on non-medical reasons came up more frequently and wondered if EAS was the right solution for these requests. Last, respondents had the impression that the standards of EAS are shifting and that the boundaries of the EAS regulation were stretched. Conclusions The perceived developments could make physicians less willing to consider a request for EAS. Our results also raise questions about the role of physicians and of EAS in society. (shrink)

Next SectionBackground Scientific papers are retracted for many reasons including fraud (data fabrication or falsification) or error (plagiarism, scientific mistake, ethical problems). Growing attention to fraud in the lay press suggests that the incidence of fraud is increasing. Methods The reasons for retracting 742 English language research papers retracted from the PubMed database between 2000 and 2010 were evaluated. Reasons for retraction were initially dichotomised as fraud or error and then analysed to determine specific reasons for retraction. Results Error was (...) more common than fraud (73.5% of papers were retracted for error (or an undisclosed reason) vs 26.6% retracted for fraud). Eight reasons for retraction were identified; the most common reason was scientific mistake in 234 papers (31.5%), but 134 papers (18.1%) were retracted for ambiguous reasons. Fabrication (including data plagiarism) was more common than text plagiarism. Total papers retracted per year have increased sharply over the decade (r=0.96; p<0.001), as have retractions specifically for fraud (r=0.89; p<0.001). Journals now reach farther back in time to retract, both for fraud (r=0.87; p<0.001) and for scientific mistakes (r=0.95; p<0.001). Journals often fail to alert the naïve reader; 31.8% of retracted papers were not noted as retracted in any way. Conclusions Levels of misconduct appear to be higher than in the past. This may reflect either a real increase in the incidence of fraud or a greater effort on the part of journals to police the literature. However, research bias is rarely cited as a reason for retraction. (shrink)

BackgroundThe emergence of artificial intelligence (AI) in medicine has prompted the development of numerous ethical guidelines, while the involvement of patients in the creation of these documents lags behind. As part of the European PROFID project we explore patient perspectives on the ethical implications of AI in care for patients at increased risk of sudden cardiac death (SCD).AimExplore perspectives of patients on the ethical use of AI, particularly in clinical decision-making regarding the implantation of an implantable cardioverter-defibrillator (ICD).MethodsSemi-structured, future scenario-based (...) interviews were conducted among patients who had either an ICD and/or a heart condition with increased risk of SCD in Germany (n = 9) and the Netherlands (n = 15). We used the principles of the European Commission’s Ethics Guidelines for Trustworthy AI to structure the interviews.ResultsSix themes arose from the interviews: the ability of AI to rectify human doctors’ limitations; the objectivity of data; whether AI can serve as second opinion; AI explainability and patient trust; the importance of the ‘human touch’; and the personalization of care. Overall, our results reveal a strong desire among patients for more personalized and patient-centered care in the context of ICD implantation. Participants in our study express significant concerns about the further loss of the ‘human touch’ in healthcare when AI is introduced in clinical settings. They believe that this aspect of care is currently inadequately recognized in clinical practice. Participants attribute to doctors the responsibility of evaluating AI recommendations for clinical relevance and aligning them with patients’ individual contexts and values, in consultation with the patient.ConclusionThe ‘human touch’ patients exclusively ascribe to human medical practitioners extends beyond sympathy and kindness, and has clinical relevance in medical decision-making. Because this cannot be replaced by AI, we suggest that normative research into the ‘right to a human doctor’ is needed. Furthermore, policies on patient-centered AI integration in clinical practice should encompass the ethics of everyday practice rather than only principle-based ethics. We suggest that an empirical ethics approach grounded in ethnographic research is exceptionally well-suited to pave the way forward. (shrink)

To the standard propositional modal system of provability logic constants are added to account for the arithmetical fixed points introduced by Bernardi-Montagna in [5]. With that interpretation in mind, a system LR of modal propositional logic is axiomatized, a modal completeness theorem is established for LR and, after that, a uniform arithmetical completeness theorem with respect to PA is obtained for LR.

Due to the COVID-19 pandemic, cities and states adopted social distancing, social isolation, or quarantine measurements to slow the transmission of the disease. Negative mental health outcomes including depression and anxiety have been associated with social distancing or social isolation. The purpose of the present study was to examine changes in psychological health and physical activity over an 8 week period under social distancing policies during the COVID-19 pandemic.Methods: Ninety individuals participated in this study. Qualifying participants answered questions using an (...) online survey regarding their loneliness, depressive symptoms, anxiety symptoms, mood state, and physical activity over four time points each lasting two weeks.Results: Symptoms of depression and state anxiety were increased in the population when compared to nationwide statistics from before the COVID-19 pandemic. Time point 2, ~1 month into social isolation, showed the most significant effects on mental health. During this time point, 100% of the participants showed symptoms of depression. There were no significant changes in physical activity over the 8 weeks. Loneliness, depressive symptoms, fatigue, and mood state were negatively associated with participation in physical activity. Vigor and state anxiety were associated with participation in physical activity.Conclusion: Social isolation and social distancing practices have had a negative effect on depression, anxiety, and mood over time. It appeared that depressive symptoms and total mood disturbance was elevated during time point two. Depressive symptoms were much higher than average compared to previous epidemiological data. Physical activity amount did not change over time but was associated with poor mental health. (shrink)

The traditional doctrine of God's universal causality holds that God directly causes all entities distinct from himself, including all creaturely actions. But can our actions be free in the strong, libertarian sense if they are directly caused by God? W. Matthews Grant argues that free creaturely acts have dual sources, God and the free creaturely agent, and are ultimately up to both in a way that leaves all the standard conditions for libertarian freedom satisfied. Offering a comprehensive alternative to (...) existing approaches for combining theism and libertarian freedom, he proposes new solutions for reconciling libertarian freedom with robust accounts of God's providence, grace, and predestination. He also addresses the problem of moral evil without the commonly employed Free Will Defense. Written for analytic philosophers and theologians, Grant's approach can be characterized as “neo-scholastic” as well as “analytic,” since many of the positions defended are inspired by, consonant with, and develop resources drawn from the scholastic tradition, especially Aquinas. (shrink)

This paper contains a completeness proof for the system ILW, a rather bewildering axiom system belonging to the family of interpretability logics. We have treasured this little proof for a considerable time, keeping it just for ourselves. Johan’s ftieth birthday appears to be the right occasion to get it out of our wine cellar.

First published in 1999. Routledge is an imprint of Taylor & Francis, an informa company.

Background Papers retracted for fraud (data fabrication or data falsification) may represent a deliberate effort to deceive, a motivation fundamentally different from papers retracted for error. It is hypothesised that fraudulent authors target journals with a high impact factor (IF), have other fraudulent publications, diffuse responsibility across many co-authors, delay retracting fraudulent papers and publish from countries with a weak research infrastructure. Methods All 788 English language research papers retracted from the PubMed database between 2000 and 2010 were evaluated. Data (...) pertinent to each retracted paper were abstracted from the paper and the reasons for retraction were derived from the retraction notice and dichotomised as fraud or error. Data for each retracted article were entered in an Excel spreadsheet for analysis. Results Journal IF was higher for fraudulent papers (p<0.001). Roughly 53% of fraudulent papers were written by a first author who had written other retracted papers (‘repeat offender’), whereas only 18% of erroneous papers were written by a repeat offender (χ=88.40; p<0.0001). Fraudulent papers had more authors (p<0.001) and were retracted more slowly than erroneous papers (p<0.005). Surprisingly, there was significantly more fraud than error among retracted papers from the USA (χ2=8.71; p<0.05) compared with the rest of the world. Conclusions This study reports evidence consistent with the ‘deliberate fraud’ hypothesis. The results suggest that papers retracted because of data fabrication or falsification represent a calculated effort to deceive. It is inferred that such behaviour is neither naïve, feckless nor inadvertent. (shrink)