A pseudo-natural algorithm for the word problem of a finitely presented group is an algorithm which not only tells us whether or not a word w equals 1 in the group but also gives a derivation of 1 from w when w equals 1. In [13], [14] Madlener and Otto show that, if we measure complexity of a primitive recursive algorithm by its level in the Grzegorczyk hierarchy, there are groups in which a pseudo-natural algorithm is arbitrarily more complicated than (...) an algorithm which simply solves the word problem. In a given group the lowest degree of complexity that can be realised by a pseudo-natural algorithm is essentially the derivational complexity of that group. Thus the result separates the derivational complexity of the word problem of a finitely presented group from its intrinsic complexity. The proof given in [13] involves the construction of a finitely presented group G from a Turing machine T such that the intrinsic complexity of the word problem for G reflects the complexity of the halting problem of T, while the derivational complexity of the word problem for G reflects the runtime complexity of T. The proof of one of the crucial lemmas in [13] is only sketched, and part of the purpose of this paper is to give the full details of this proof. We will also obtain a variant of their proof, using modular machines rather than Turing machines. As for several other results, this simplifies the proofs considerably. MSC: 03D40, 20F10. (shrink)

In 1976, The Hastings Center convened a conference to examine the validity of proposed parallels between Nazi and contemporary biomedical practices in moral argument. Charges that current medical and social practices and policies are analogous to or are the moral equivalent of Nazi programs are again in the air, and in this new feature of the Report, four commentators display and critique the use of this analogy.

Recent neuropaleontological research suggests that the parietal lobe has increased in size as much as the frontal lobes in Homo Sapiens over the past 150,000 years, but has not provided a neuropsychological explanation for the evolution of human socialization or the development of religion. Drawing from several areas of research, (i.e., neurodevelopment, neuropsychology, paleoneurology, cognitive science, archeology, and anthropology), we argue that parietal evolution in Homo sapiens integrated sensations and mental processes into a more integrated subjective “sense of self”. This (...) enhanced self advanced prosocial traits (e.g., increased empathy, greater social bonding, enhanced theory of mind capacities), promoting more effective socialization skills (e.g., parenting, group cooperation). Conversely, when this enhanced sense of self became inhibited, powerful experiences of self-transcendence occurred. We believe these potent selfless experiences became increasingly sought after though ritual means (e.g., music, dance, vision quests, spirit travel), providing the foundations for the development of shamanism and religion. (shrink)

Pt. 1. Aux sources de la croissance -- L'espèce humaine -- L'exode -- Le 13 novembre 2026 -- Naissance de la monnaie -- Le vol de l'histoire -- Du monde clos à l'univers infini -- Pt. 2. L'avenir, l'avenir ! -- La singularité est proche -- Où va le travail humain 2 -- La croissance disparue -- Marx à Hollywood -- De collapsus novum -- Pt. 3. Repenser le progrès -- La (nouvelle) grande transformation -- L'autonomie et la survie -- (...) Mythes et ressentiments -- Le double bind -- Comment peut-on être danois 2 -- L'endogamie sociale -- Au-delà de la croissance. (shrink)

The claim that argumentation has no proper role in either philosophy or education, and especially not in philosophical education, flies in the face of both conventional wisdom and traditional pedagogy. There is, however, something to be said for it because it is really only provocative against a certain philosophical backdrop. Our understanding of the concept "argument" is both reflected by and molded by the specific metaphor that argument-is-war, something with winners and losers, offensive and defensive moments, and an essentially adversarial (...) structure. Such arguments may be suitable for teaching a philosophy, but not for teaching philosophy. Surely, education and philosophy do not need to be conceived as having an adversarial essence-if indeed they are thought to have any essence at all. Accordingly, philosophy and education need more pragmatic goals than even Pierce's idealized notion of truth as the end of inquiry, e.g., the simple furtherance of inquiry. For this, new metaphors for framing and understanding the concept of argumentation are needed, and some suggestions in that direction will be considered. (shrink)

Michael Smith has resisted Harry Frankfurt's claim that moral responsibility does not require the ability to have done otherwise. He does this by claiming that, in Frankfurt cases, the ability to do otherwise is indeed present, but is a disposition that has been `finked' or masked by other factors. We suggest that, while Smith's account appears to work for some classic Frankfurt cases, it does not work for all. In particular, Smith cannot explain cases, such as the Willing Addict, where (...) the Frankfurt devise - e.g. the addiction - is intrinsic to the agent. (shrink)

BackgroundAlthough the number of reporting guidelines has grown rapidly, few have gone through an updating process. The STARD statement (Standards for Reporting Diagnostic Accuracy), published in 2003 to help improve the transparency and completeness of reporting of diagnostic accuracy studies, was recently updated in a systematic way. Here, we describe the steps taken and a justification for the changes made.ResultsA 4-member Project Team coordinated the updating process; a 14-member Steering Committee was regularly solicited by the Project Team when making critical (...) decisions. First, a review of the literature was performed to identify topics and items potentially relevant to the STARD updating process. After this, the 85 members of the STARD Group were invited to participate in two online surveys to identify items that needed to be modified, removed from, or added to the STARD checklist. Based on the results of the literature review process, 33 items were presented to the STARD Group in the online survey: 25 original items and 8 new items; 73 STARD Group members (86 %) completed the first survey, and 79 STARD Group members (93 %) completed the second survey.Then, an in-person consensus meeting was organized among the members of the Project Team and Steering Committee to develop a consensual draft version of STARD 2015. This version was piloted in three rounds among a total of 32 expert and non-expert users. Piloting mostly led to rewording of items. After this, the update was finalized. The updated STARD 2015 list now consists of 30 items. Compared to the previous version of STARD, three original items were each converted into two new items, four original items were incorporated into other items, and seven new items were added.ConclusionsAfter a systematic updating process, STARD 2015 provides an updated list of 30 essential items for reporting diagnostic accuracy studies. (shrink)

Psychological and neuroscientific data suggest that a great deal, perhaps even most, of our reasoning turns out to be rationalizing. The reasons we give for our positions are seldom either the real reasons or the effective causes of why we have those positions. We are not as rational as we like to think. A second, no less disheartening observation is that while we may be very effective when it comes to giving reasons, we are not that good at getting reasons. (...) We are not as reasons-responsive as we like to think. Reasoning and argumentation are, on this view, charades without effect. This paper begins by identifying a range of theoretical responses to the idea that reasoning and argumentation have little casual role in our thoughts and actions, and, consequently, that humans are not the reasons-giving, reasons-responsive agents that we imagine ourselves to be. The responses fall into three categories: challenging the data and their interpretations; making peace with the loss of autonomy that is implied; and seeking ways to expand the causal footprint of reasoning and argumentation, e.g., by developing argumentative virtues. There are indeed possibilities for becoming more rational and more reasons-responsive, so the reports of our demise as the rational animal are greatly exaggerated. (shrink)

Psychological and neuroscientific data suggest that a great deal, perhaps even most, of our reasoning turns out to be rationalizing. The reasons we give for our positions are seldom either the real reasons or the effective causes of why we have those positions. We are not as rational as we like to think. A second, no less disheartening observation is that while we may be very effective when it comes to giving reasons, we are not that good at getting reasons. (...) We are not as reasons-responsive as we like to think. Reasoning and argumentation are, on this view, charades without effect. This paper begins by identifying a range of theoretical responses to the idea that reasoning and argumentation have little casual role in our thoughts and actions, and, consequently, that humans are not the reasons-giving, reasons-responsive agents that we imagine ourselves to be. The responses fall into three categories: challenging the data and their interpretations; making peace with the loss of autonomy that is implied; and seeking ways to expand the causal footprint of reasoning and argumentation, e.g., by developing argumentative virtues. There are indeed possibilities for becoming more rational and more reasons-responsive, so the reports of our demise as the rational animal are greatly exaggerated. (shrink)

Psychological and neuroscientific data suggest that a great deal, perhaps even most, of our reasoning turns out to be rationalizing. The reasons we give for our positions are seldom either the real reasons or the effective causes of why we have those positions. We are not as rational as we like to think. A second, no less disheartening observation is that while we may be very effective when it comes to giving reasons, we are not that good at getting reasons. (...) We are not as reasons-responsive as we like to think. Reasoning and argumentation are, on this view, charades without effect. This paper begins by identifying a range of theoretical responses to the idea that reasoning and argumentation have little casual role in our thoughts and actions, and, consequently, that humans are not the reasons-giving, reasons-responsive agents that we imagine ourselves to be. The responses fall into three categories: challenging the data and their interpretations; making peace with the loss of autonomy that is implied; and seeking ways to expand the causal footprint of reasoning and argumentation, e.g., by developing argumentative virtues. There are indeed possibilities for becoming more rational and more reasons-responsive, so the reports of our demise as the rational animal are greatly exaggerated. (shrink)

This contribution resumes the main conclusions of a common work of philosophical comparatism between the Neoplatonism of Plotinus and Proclus, which is based on the examination of their respective reception of the traditional metaphysical use of anciant myths. This article consists in the examination of two important “definitions” of myth collected in the Enneads of Plotinus and Proclus’ Commentary on the Republic. On the basis of these analyses, it is possible to assert that, for Plotinus as for Proclus, the muthos (...) appears as being a simple particular case of logos, and even that the logos itself is only a particular case of muthos. (shrink)

This contribution resumes the main conclusions of a common work of philosophical comparatism between the Neoplatonism of Plotinus and Proclus, which is based on the examination of their respective reception of the traditional metaphysical use of anciant myths. This article consists in the examination of two important “definitions” of myth collected in the Enneads of Plotinus and Proclus’ Commentary on the Republic. On the basis of these analyses, it is possible to assert that, for Plotinus as for Proclus, the muthos (...) appears as being a simple particular case of logos, and even that the logos itself is only a particular case of muthos. (shrink)

A complex network of reciprocal relations connect arguments and stories. Arguments can occur in stories and stories can be parts of arguments. Further, stories can themselves be arguments. Whether a text or exchange serves as an argument partly depe nds on how we read it, i.e., on the story we tell about it and how well we argue for that story, but the circle is not as vicious as it appears. Or at least, that is the story we present and (...) the argument we tell in this dialogue revisiting the ancient ar gument between the poets and the philosophers. (shrink)

In recent years, two important books by Yoram Cohen and Matthew Rutz have marked significant progress in research on the archives of Late Bronze Age Emar in northwestern Syria. Both of them approach Emar by way of its scribes. Cohen undertakes a systematic review of all named scribes identified in texts associated with Emar, while Rutz narrows his object to the building that yielded by far the largest number of excavated tablets. This work is foundational to future work (...) on the Emar texts even as it calls for cautious consideration. (shrink)

Hobbs (2010) introduced ‘clause-internal coherence’ (CIC) to describe inferences in, e.g., ‘A jogger was hit by a car,’ where the jogging is understood to have led to the car-hitting. Cohen & Kehler (2021) argue that well-known pragmatic tools cannot account for CIC, motivating an enrichment account familiar from discourse coherence research. An outstanding question is how to compositionally derive CIC from coherence relations. This paper takes strides in answering this question. It first provides experimental support for the existence of (...) CIC via offline evidence that attributive (non-)deverbal adjectives can trigger the same causal inferences within clauses that their predicative counterparts can trigger across clauses, albeit more weakly. To explain the experimental results, we use tools in Segmented Discourse Representation Theory (SDRT), which allows us to show that causal inferences can be derived in various ways, depending on whether deverbal adjectives are used attributively or predicatively. If the former, they are presupposition triggers and the coherence relations Elaboration/Continuation compete with Background; if the latter, Explanation/Result compete with Background. These different competitions -- cashed out in terms of interaction between default axioms -- correlate with the difference in the relative salience of the causal inferences. (shrink)

Within the political economy of informational capitalism, commercial surveillance practices are tools for resource extraction. That process requires an enabling legal construct, which this essay identifies and explores. Contemporary practices of personal information processing constitute a new type of public domain—a repository of raw materials that are there for the taking and that are framed as inputs to particular types of productive activity. As a legal construct, the biopolitical public domain shapes practices of appropriation and use of personal information in (...) two complementary and interrelated ways. First, it constitutes personal information as available and potentially valuable: as a pool of materials that may be freely appropriated as inputs to economic production. That framing supports the reorganization of sociotechnical activity in ways directed toward extraction and appropriation. Second, the biopolitical public domain constitutes the personal information harvested within networked information environments as raw. That framing creates the backdrop for culturally situated techniques of knowledge production and for the logic that designates those techniques as sites of legal privilege. (shrink)

This book explores the fundamental concepts that keep companies successful in the era of globalization and the internet, investigating the implementation of best practices and how ethics can be taught to the next generation of business experts.

ABSTRACT:U.S. Organizational Sentencing Guidelines provide firms with incentives to develop formal ethics programs to promote ethical organizational cultures and thereby decrease corporate offenses. Yet critics argue such programs are cosmetic. Here we studied bank employees before and after the introduction of formal ethics training—an important component of formal ethics programs—to examine the effects of training on ethical organizational culture. Two years after a single training session, we find sustained, positive effects on indicators of an ethical organizational culture (observed unethical behavior, (...) intentions to behave ethically, perceptions of organizational efficacy in managing ethics, and the firm’s normative structure). While espoused organizational values also rose in importance post-training, the boost dissipated after the second year which suggests perceptions of values are not driving sustained behavioral improvements. This finding conflicts with past theory which asserts that enduring behavioral improvements arise from the inculcation of organizational values. Implications for future research are discussed. (shrink)

ABSTRACT:U.S. Organizational Sentencing Guidelines provide firms with incentives to develop formal ethics programs to promote ethical organizational cultures and thereby decrease corporate offenses. Yet critics argue such programs are cosmetic. Here we studied bank employees before and after the introduction of formal ethics training—an important component of formal ethics programs—to examine the effects of training on ethical organizational culture. Two years after a single training session, we find sustained, positive effects on indicators of an ethical organizational culture (observed unethical behavior, (...) intentions to behave ethically, perceptions of organizational efficacy in managing ethics, and the firm’s normative structure). While espoused organizational values also rose in importance post-training, the boost dissipated after the second year which suggests perceptions of values are not driving sustained behavioral improvements. This finding conflicts with past theory which asserts that enduring behavioral improvements arise from the inculcation of organizational values. Implications for future research are discussed. (shrink)

In 2004 a survey was conducted in the member states of the European Union designed to gain greater insight into the views on control strategies for foot and mouth disease, classical swine fever, and avian influenza with respect to the epidemiological, economic and social-ethical consequences of each of these animal diseases. This article presents the results of the social-ethical survey. A selection of stakeholders from each member state was asked to prioritize issues for the prevention and control of these diseases. (...) A majority of stakeholders chose preventive measures as the preferred issue. An analysis was done to determine whether there were differences in views expressed by stakeholders from member states with a history of recent epidemics and ones without such a history, and whether there were regional differences. There were no differences between member states with or without a history of recent epidemics. There were indeed regional differences between the priority orders from Northern and Southern Europe on the one hand, and from Eastern Europe on the other. (shrink)

We present two studies that examine the effects of guanxi on multiple social groups from the perspective of Chinese business people. Study 1 (N = 203) tests the difference in perceived effects of six guanxi contextualizations. Study 2 (N = 195) examines the duality of guanxi as either helpful or harmful to social groups, depending on the contextualization. Findings suggest guanxi may result in positive as well as negative outcomes for focal actors and the aggregate.

Plagiarism is increasingly evident in business and academia. Though links between demographic, personality, and situational factors have been found, previous research has not used actual plagiarism behavior as a criterion variable. Previous research on academic dishonesty has consistently used self-report measures to establish prevalence of dishonest behavior. In this study we use actual plagiarism behavior to establish its prevalence, as well as relationships between integrity-related personal selection and workplace deviance measures. This research covers new ground in two respects: (a) That (...) the academic dishonesty literature is subject to revision using criterion variables to avoid self bias and social desirability issues and (b) we establish the relationship between actual academic dishonesty and potential workplace deviance/white-collar crime. (shrink)

In Section 38 of the Theory of Vision Vindicated, George Berkeley claims that he had used the method of analysis throughout the Theory of Vision. What does that mean? I first show that "analysis" denoted a fairly well-defined method in the early modern period: it was regularly described as a method of discovery. Then I show that the discussion of distance perception in the Theory of Vision exemplifies the method of analysis and may be seen as a modification of a (...) non-geometrical account of distance vision in Rene Descartes' Optics. (shrink)

Plagiarism is increasingly evident in business and academia. Though links between demographic, personality, and situational factors have been found, previous research has not used actual plagiarism behavior as a criterion variable. Previous research on academic dishonesty has consistently used self-report measures to establish prevalence of dishonest behavior. In this study we use actual plagiarism behavior to establish its prevalence, as well as relationships between integrity-related personal selection and workplace deviance measures. This research covers new ground in two respects: (a) That (...) the academic dishonesty literature is subject to revision using criterion variables to avoid self bias and social desirability issues and (b) we establish the relationship between actual academic dishonesty and potential workplace deviance/white-collar crime. (shrink)

ABSTRACT:While tone at the top is widely regarded as an important predictor of ethical behavior in organizations, we argue that recent research overlooks the various conflicting ethical tones present in many multi-organizational work settings. Further, we propose that the resolution processes promulgated in many firms and professional associations to reconcile this conflict reinforce the tone at the bottom or a tone at the top of the employee’s organization, and that both of these approaches can conflict with the tone at the (...) top of other important organizations such as professional and regulatory organizations. Here we adapt Integrative Social Contract Theory’s priority rules to propose a multi-tone reconciliation process which prioritizes conflicting ethical tones based upon features of the organization and the effects on society. Using three contextualizations, we demonstrate the effectiveness of the multi-tone reconciliation process over current processes. We conclude with recommendations for future research and implications for practice. (shrink)

Irish philosopher George Bishop Berkeley was one of the greatest philosophers of the early modern period. Along with David Hume and John Locke he is considered one of the fathers of British Empiricism. Berkeley is a clear, concise, and sympathetic introduction to George Berkeley’s philosophy, and a thorough review of his most important texts. Daniel E. Flage explores his works on vision, metaphysics, morality, and economics in an attempt to develop a philosophically plausible interpretation of Berkeley’s oeuvre as whole. (...) Many scholars blur the rejection of material substance with the claim that only minds and things dependent upon minds exist. However Flage shows how, by distinguishing idealism from immaterialism and arguing that Berkeley’s account of what there is is dependent upon what is known, a careful and plausible philosophy emerges. The author sets out the implications of this valuable insight for Berkeley’s moral and economic works, showing how they are a natural outgrowth of his metaphysics, casting new light on the appreciation of these and other lesser-known areas of Berkeley’s thought. Daniel E. Flage’s Berkeley presents the student and general reader with a clear and eminently readable introduction to Berkeley’s works which also challenges standard interpretations of Berkeley’s philosophy. (shrink)

Naïve realism is the view according to which perception is a non-representational relation of conscious awareness to mind-independent objects and properties. According to this approach, the phenomenal character of experience is constituted by just the objects, properties, or facts presented to the senses. In this article, I argue that such a conception of the phenomenology of experience faces a clear counter-example, i.e., the experience of seeing aspects. The discussion suggests that, to accommodating such a kind of experience, it must be (...) acknowledged that perception is, at least in part, representational. (shrink)

Recent corporate social initiatives (CSIs) have garnered criticisms from a wide range of audiences due to perceived inconsistencies. Some critics use the label “woke” when CSIs are perceived as inconsistent with the firm’s purpose. Other critics use the label “woke washing” when CSIs are perceived as inconsistent with the firm’s practices or values. I will argue that this derogatory use of woke is stigmatizing, leads to claims of hypocrisy, and can cause stakeholder backlash. I connect this process to our own (...) field by considering inconsistencies in our organizations and in our teaching that could garner similar criticisms. After describing the stigmatization process, I consider the moral implications of inconsistencies for CSIs and draw parallels to our field. I end by suggesting next steps for our field in response to the stigmatization of CSIs and to guard against the stigmatization of our own work. (shrink)

While e-commerce has grown rapidly in recent years, some of the practices associated with certain aspects of marketing on the Internet, such as pop-ups, cookies, and spam, have raised concerns on the part of Internet users. In this paper I examine the nature of these practices and what I take to be the underlying source of this concern. I argue that the ethical issues surrounding these Internet marketing techniques move us beyond the traditional treatment of the ethics of marketing and (...) advertising found in discussions of business ethics previously. Rather, I show that the questions they raise ultimately turn upon questions of technique and the ways in which technologies can transform the fundamental means by which relationships are established and maintained within a social environment. I then argue that the techniques of e-commerce are indeed transforming the means by which businesses relate to consumers, and that this transformation is affecting the applicability of our previous ways of demarcating the imperatives determining the limits of accessibility between consumers and businesses. Properly addressing the ethical status of the techniques of e-marketing as such necessarily moves us to consider the changes that Internet commerce are having upon the norms that govern individuals in their relations with others. (shrink)

Alisdair MacIntyre argues that the virtues necessary for good work are everywhere and always embodied by particular communities of practice. As a general surgeon, MacIntyre’s work has deeply influenced my own understanding of the practice of good surgery. The task of this essay is to describe how the guild of surgeons functions as a more-or-less coherent tradition of moral enquiry, embodying and transmitting the virtues necessary for the practice of good surgery. Beginning with an example of surgeons engaged in a (...) process of moral discernment, I describe how the practice of surgery depends on the cultivation of a certain kind of practical wisdom (phronesis) that effectively orders the techniques of surgery toward particular notions of human flourishing within the limits of what is possible with the particular body on which the surgeon operates. I then argue that one reason why surgeons train in an apprenticeship model of "residency" is to cultivate not only the technical skill but also the practical wisdom to perform good surgery. I conclude by noting that the surgical profession is enduring necessary, but unprecedented, changes in the way it practices and transmits its art; and without deliberate and sustained attention to the character formation of surgeons, the profession runs the risk of creating excellent technicians who are nonetheless ill-equipped to practice wise and good surgery. (shrink)

Research on the normative aspect of leadership is still a relatively new enterprise within the mainstream of leadership studies. In the past, most academic inquiry into leadership was grounded in a social scientific paradigm that largely ignored the ethical substance of leadership. However, perhaps because of a number of public and infamous cases of failure in business leadership, in recent years there has been renewed interest in the ethical side of leadership in business. This paper argues that ethical issues of (...) leadership actually arise at number of different levels, and that it is important to distinguish between various diverse kinds of ethical issues that arise in the study of leadership. The three levels identified are the level of the individual morality of leaders, the level of the means of their leadership, and the level of the leadership mission itself. We argue that only by fully understanding all of the different levels of ethical analysis pertinent to business leadership, and the distinctive kind of issues that arise at each level, can we fully integrate normative studies of leadership into the field of leadership studies. As such, this paper offers a model that incorporates three different levels of ethical analysis that can be used to study normative issues in leadership studies. Such a model can be used to better understand and integrate ethical issues into research, teaching, and training in leadership. (shrink)

Rankings of countries by perceived corruption have emerged over the past decade as leading indicators of governance and development. Designed to highlight countries that are known to be corrupt, their objective is to encourage transparency and good governance. High rankings on corruption, it is argued, will serve as a strong incentive for reform. The practice of ranking and labeling countries "corrupt," however, may have a perverse effect. Consistent with Social Labeling Theory, we argue that perceptual indices can encourage the loss (...) of needed investment and, thus, contribute to higher rates of corruption within unfavorably ranked countries. In effect, corruption indices may inhibit foreign direct investment, the effect of which is to encourage the status quo in terms of corruption ranking. Using an experimental study design, we test the effects of country corruption rankings on the assessment of country investment desirability and find ranking exposure causes shifts in country investment desirability for 10 of 12 countries studied. These findings suggest that corruption rankings, which are based on perceptions of corruption, may cause country isolation and a reduction in legitimate means of investment. (shrink)

I apply stigma-management strategies to corporate scandals and expand on past research by (a) describing a particular type ofstigma management strategy that involves accepting responsibility while denying it, (b) delineating types of stigma that occur in scandals (demographic versus character), and (c) considering the moral implications of shifting stigmas that arise from scandals. By emphasizing the distinction between character and demographic stigma, I make progress in evaluating the moral implications of shifting different types of stigma.

I apply stigma-management strategies to corporate scandals and expand on past research by (a) describing a particular type ofstigma management strategy that involves accepting responsibility while denying it, (b) delineating types of stigma that occur in scandals (demographic versus character), and (c) considering the moral implications of shifting stigmas that arise from scandals. By emphasizing the distinction between character and demographic stigma, I make progress in evaluating the moral implications of shifting different types of stigma.

INTRODUCTION Anyone who reads David Hume's Treatise of Human Nature cannot but be struck by the diversity of philosophical issues Hume addresses, ...

We explore an application of homological algebra to set theoretic objects by developing a cohomology theory for Hausdorff gaps. This leads to a natural equivalence notion for gaps about which we answer questions by constructing many simultaneous gaps. The first result is proved in ZFC while new combinatorial hypotheses generalizing ♣ are introduced to prove the second result. The cohomology theory is introduced with enough generality to be applicable to other questions in set theory. Additionally, the notion of an incollapsible (...) gap is introduced and the existence of such a gap is shown to be independent of ZFC. (shrink)

It is widely held that the content of perceptual experience is propositional in nature. However, in a well-known article, “Is Perception a Propositional Attitude?” (2009), Crane has argued against this thesis. He therein assumes that experience has intentional content and indirectly argues that experience has non-propositional content by showing that from what he considers to be the main reasons in favour of “the propositional-attitude thesis”, it does not really follow that experience has propositional content. In this paper I shall discuss (...) Crane’s arguments against the propositional-attitude thesis and will try to show, in contrast, that they are unconvincing. My conclusion will be that, despite all that Crane claims, perceptual content could after all be propositional in nature. (shrink)

It is often assumed that engaging in a one‐on‐one dialogue with a tutor is more effective than listening to a lecture or reading a text. Although earlier experiments have not always supported this hypothesis, this may be due in part to allowing the tutors to cover different content than the noninteractive instruction. In 7 experiments, we tested the interaction hypothesis under the constraint that (a) all students covered the same content during instruction, (b) the task domain was qualitative physics, (c) (...) the instruction was in natural language as opposed to mathematical or other formal languages, and (d) the instruction conformed with a widely observed pattern in human tutoring: Graesser, Person, and Magliano's 5‐step frame. In the experiments, we compared 2 kinds of human tutoring (spoken and computer mediated) with 2 kinds of natural‐language‐based computer tutoring (Why2‐Atlas and Why2‐AutoTutor) and 3 control conditions that involved studying texts. The results depended on whether the students' preparation matched the content of the instruction. When novices (students who had not taken college physics) studied content that was written for intermediates (students who had taken college physics), then tutorial dialogue was reliably more beneficial than less interactive instruction, with large effect sizes. When novices studied material written for novices or intermediates studied material written for intermediates, then tutorial dialogue was not reliably more effective than the text‐based control conditions. (shrink)

In lieu of an abstract, here is a brief excerpt of the content:168 HUME ON MEMORY AND CAUSATION In the first part of this paper I shall argue that an examination of Hume's second criterion for distinguishing between ideas of the memory and ideas of the imagination shows that Hume's ideas of the memory are relative ideas corresponding to definite descriptions of the general form, "the complex impression that is the (original) cause of a particular positive idea m and which (...) exactly (or closely) resembles m," where 'm' is a variable ranging over positive ideas (mental images). I shall show that if this is correct, there is a clear basis for distinguishing ideas of the memory both from ideas of the imagination and from beliefs regarding spatially and temporally located objects that are not based upon the memory. But since there is often a significant temporal distance between the impression remembered and the positive component of one's relative idea of the memory, it is incumbent upon me to explain how the remembered impression and the positive idea can be causally related even though they are not temporally contiguous. In the second part of the paper I shall argue that, contrary to his "definitions" of causation in the Treatise,2 Hume took neither spatial nor temporal contiguity to be essential to causation. In Book I, Part I, Section 3 and again in Book I, Part III, Section 5 of his Treatise of Human Nature, Hume provides two criteria for distinguishing between ideas of the memory and ideas of the imagination. I shall refer to these two criteria as "the phenomenal criterion" and "the formal criterion". In this section I shall show that while the phenomenal criterion 169 expresses the means one actually employs in distinguishing an idea of the memory from an idea of the imagination, the formal criterion provides one with insight into the complex structure of an idea of the memory, and therefore allows one to distinguish ideas of the memory from both ideas of the imagination and from other ideas of and beliefs regarding spatially and temporally located objects. In Book I, Part I,- Section 3 of the Treatise, Hume introduces the phenomenal criterion as follows: We find by experience, that when any impression has been present with the mind, it again makes its appearance there as an idea; and this it may do after two different ways: either when in its new appearance it retains a considerable degree of its first vivacity, and is somewhat intermediate betwixt an impression and an idea; or when it entirely loses that vivacity, and is a perfect idea. The faculty, by which we repeat our impressions in the first manner, is called the MEMORY, and the other the IMAGINATION. 'Tis evident at first sight, that the ideas of the memory are much more lively and strong than those of the imagination, and that the former faculty paints its objects in more distinct colours, than any which are employ'd by the latter. When we remember any past event, the idea of it flows in upon the mind in a forcible manner; whereas in the imagination the perception is faint and languid, and cannot without difficulty be preserv'd by the mind steddy and uniform for any considerable time. Here then is a sensible difference betwixt one species of ideas and another. (T 8-9; cf. T 85) It is clear that Hume took this to be a phenomenal criterion, i.e., to specify a sensible characteristic by which one can distinguish an idea of the memory from an idea of the imagination. Not only does he state that he has found "a sensible difference betwixt one species of ideas and another" (T 9), in the parallel 170 passage in Part III, Section 5 he claims to "search for the characteristic [of the idea], which distinguishes the memory from the imagination" (T 85, Hume's emphasis). The characteristic that allows one to "distinguish them in their operation" (T 85) is the difference in the force and vivacity of the ideas involved. Ideas of the memory are "much more lively and strong than those of the imagination," "the former faculty paints its objects in more distinct colours", and ideas of the memory... (shrink)