The system GLS, which is a modal sequent calculus system for the provability logic GL, was introduced by G. Sambin and S. Valentini in Journal of Philosophical Logic, 11, 311–342,, and in 12, 471–476,, the second author presented a syntactic cut-elimination proof for GLS. In this paper, we will use regress trees in order to present a simpler and more intuitive syntactic cut derivability proof for GLS1, which is a variant of GLS without the cut rule.

Structural Injustice has become a hugely important concept in the field of political theory with the work of Iris Marion Young central to debates on what it is, what motivates it and how it should be addressed. In this article, I focus on a particular thread in Young’s account of structural injustice which I argue is all too often overlooked - the untraceability of structural injustice. This is not only a constant theme in Young’s account of structural injustice, it is, (...) in fact, a defining feature. By ‘untraceable’, Young means that structural injustice is distinct from other sorts of injustices for which there is a traceable agent at fault – these sorts of faut-based injustices fall under what Young calls the ‘liability model of injustice’. For the purposes of exploring the concept of structural injustice, I follow the logic of the claim that structural injustice is untraceable to see where it takes us in conversation with Young’s critics. I conclude that Young’s account is not only defensible with some clarification and development but vital politically. That said, I also find Young’s account of political responsibility for structural injustice wanting and accordingly I propose a way of understanding what I see as a dynamic transition from structural to fault-based injustices which I argue Young’s more ‘static’ account fails to accommodate. This is important, I suggest, for thinking about the ways in which responsibility for different forms of injustice operate and change. _Contemporary Political Theory_ (2023). https://doi.org/10.1057/s41296-023-00634-4. (shrink)

Cognitive control of physical activity and sedentary behavior is receiving increased attention in the neuroscientific and behavioral medicine literature as a means of better understanding and improving the self-regulation of physical activity. Enhancing individuals’ cognitive control capacities may provide a resilient means to increase physical activity and reduce sedentary behavior. First, this paper reviews emerging evidence of the antecedence of cognitive control abilities in successful self-regulation of physical activity, and in precipitating self-regulation failure that predisposes to sedentary behavior. We then (...) highlight the brain networks that may underpin the cognitive control and self-regulation of physical activity, including the default mode network, prefrontal cortical networks and brain regions and pathways associated with reward. We then discuss research on cognitive training interventions that document improved cognitive control and that suggest promise of influencing physical activity regulation. Key cognitive training components likely to be the most effective at improving self-regulation are also highlighted. The review concludes with suggestions for future research. (shrink)

Our programmatic article on Homo heuristicus (Gigerenzer & Brighton, 2009) included a methodological section specifying three minimum criteria for testing heuristics: competitive tests, individual-level tests, and tests of adaptive selection of heuristics. Using Richter and Späth’s (2006) study on the recognition heuristic, we illustrated how violations of these criteria can lead to unsupported conclusions. In their comment, Hilbig and Richter conduct a reanalysis, but again without competitive testing. They neither test nor specify the compensatory model of inference they argue (...) for. Instead, they test whether participants use the recognition heuristic in an unrealistic 100% (or 96%) of cases, report that only some people exhibit this level of consistency, and conclude that most people would follow a compensatory strategy. We know of no model of judgment that predicts 96% correctly. The curious methodological practice of adopting an unrealistic measure of success to argue against a competing model, and to interpret such a finding as a triumph for a preferred but unspecified model, can only hinder progress. Marewski, Gaissmaier, Schooler, Goldstein, and Gigerenzer (2010), in contrast, specified five compensatory models, compared them with the recognition heuristic, and found that the recognition heuristic predicted inferences most accurately. (shrink)

In Wretched Aristotle: Using the Past to Rescue the Future, Jude P. Dougherty offers an intriguing reexamination of this crisis in contemporary times. Situating his argument in the context of ongoing debate concerning the nature of the public philosophy that underpins ideas of freedom, Dougherty identifies the essential features of Western culture through a series of interrelated essays. Each essay reinforces the idea that modernity cannot be understood apart from its break with classical antiquity.

Recently, significant research effort has focused on using Twitter to investigate mental health at the population-level. While there has been influential work in developing ethical guidelines for Internet discussion forum-based research in public health, there is currently limited work focused on addressing ethical problems in Twitter-based public health research, and less still that considers these issues from users’ own perspectives. In this work, we aim to investigate public attitudes towards utilizing public domain Twitter data for population-level mental health monitoring using (...) a qualitative methodology. The study explores user perspectives in a series of five, 2-h focus group interviews. Following a semi-structured protocol, 26 Twitter users with and without a diagnosed history of depression discussed general Twitter use, along with privacy expectations, and ethical issues in using social media for health monitoring, with a particular focus on mental health monitoring. Transcripts were then transcribed, redacted, and coded using a constant comparative approach. While participants expressed a wide range of opinions, there was an overall trend towards a relatively positive view of using public domain Twitter data as a resource for population level mental health monitoring, provided that results are appropriately aggregated. Results are divided into five sections: a profile of respondents’ Twitter use patterns and use variability; users’ privacy expectations, including expectations regarding data reach and permanence; attitudes towards social media based population-level health monitoring in general, and attitudes towards mental health monitoring in particular; attitudes towards individual versus population-level health monitoring; and users’ own recommendations for the appropriate regulation of population-level mental health monitoring. Focus group data reveal a wide range of attitudes towards the use of public-domain social media “big data” in population health research, from enthusiasm, through acceptance, to opposition. Study results highlight new perspectives in the discussion of ethical use of public data, particularly with respect to consent, privacy, and oversight. (shrink)

One way of dealing with the proliferation of conjectures that accompany the diverse study of the evolution of language is to develop precise and testable models which reveal otherwise latent implications. We suggest how verbal theories of the role of individual development in language evolution can benefit from formal modeling, and vice versa.

This paper defends a normative basis for entrepreneurial ventures, and draws the conclusion that any enterprise, insofar as it is reasonable, has in final analysis to be a (free) gift to promote good. Building on Herbert Simon's idea of "satisficing" and developing it in line with axiological insights of the new classical natural law theory, this paper makes the argument that a choice to proceed reasonably in any entrepreneurial venture will be guided by rationality that is bounded. Bounded rationality entails (...) that the various end-values or goals of the venture will be incommensurable, and this implies that (1) the enterprise need not be locked in on promoting merely one value, such as profits, and (2) a choice to aim at one or more goals will be a personal (free) gift, which is ethically valuable. This paper has appeared in Spanish translation as El don personal en las empresas sanas: racionalidad limitada, valores incommensurables y agencia economica in Revista Empresa y Humanismo, Vol. XI no. 1 (2008), pp. 67-88, published by the Institute for Business and Humanism, University of Navarra, Spain. Permission granted to reproduce/publish the original English version here and elsewhere. (shrink)

Dougherty investigates the classical roots of Western culture and its religious sources in an effort to define its underlying intellectual and spiritual ...

While theories of rationality and decision making typically adopt either a single-powertool perspective or a bag-of-tricks mentality, the research program of ecological rationality bridges these with a theoretically-driven account of when different heuristic decision mechanisms will work well. Here we described two ways to study how heuristics match their ecological setting: The bottom-up approach starts with psychologically plausible building blocks that are combined to create simple heuristics that fit specific environments. The top-down approach starts from the statistical problem facing the (...) organism and a set of principles, such as the bias– variance tradeoff, that can explain when and why heuristics work in uncertain environments, and then shows how effective heuristics can be built by biasing and simplifying more complex models. We conclude with challenges these approaches face in developing a psychologically realistic perspective on human rationality. (shrink)

This paper addresses the past, present and future aspects of African leadership and organizational ethics that have, are and will be key for any organization to sustain its systems and structures. Organizational ethics revolves around written and/or unwritten guidelines, ethical values, principles, rules and standards, that are drawn from the harmonious coexistence with the biosphere and it is how these elements are applied that dictates the style of leadership and the ethical thinking of the leaders. Africa has a wide range (...) of complexities which are compounded by, inter alia, tribal divisiveness, selfish leadership, wealth inequality, and massive unemployment. Africans tend to draw their leadership and ethical practices and reflections from the events in the environment with which they have interacted for many years. However, in order to fully address and understand the African perspective in leadership and organizational ethics, a broad comprehension of the African diverse and complex landscape is needed through unravelling of the three dimensional existence of the people. African ethics, developed over time, unifies organizations and leadership since it is part of life and is practised, sub-consciously or unconsciously, by the people as they transform from one practice to the other, and during intergenerational transitions. Globalization, liberalization, technological changes and advancement, and market changes are rapidly transforming the environment in which organizations operate. In such a situation, an effective and true leader cannot be rigid but should be flexible, with the ability to use different leadership styles whenever the situation calls for it. Only those leaders with a three-dimensional perspective live inspiring lives, live with a cause and adopt organizational ethics and leadership styles that will stand the test of time. Despite Africa being the cradle of humankind, leadership and organizational ethics is still in its infancy and wanting, even with the new generation of young leaders. The future outlook of African organizational ethics and leadership is to be found in the intersection of changes in technology, life style, demographics and geopolitics with new trends emerging in global polity and economy. (shrink)

When recalling events that one personally experienced, sometimes one sees oneself in the remembered scene: from an external, detached 'observer perspective'. In such cases one remembers from-the-outside. Remembering from-the-outside is a common yet curious case of personal memory. This book disentangles the puzzles posed by such memories.

Catholic University Of America, Philosophical Series, No 197, Abstract No. 47.

This paper is a review of the book: John J. Mearsheimer, The Great Delusion: Liberal Dreams and International Realities (New Haven, Conn.: Yale University Press, 2018). Mearsheimer observes that in the aftermath of the Cold War, the U.S. adopted a profoundly liberal foreign policy dedicated to turning as many countries as possible into liberal democracies. Mearsheimer concludes that the liberal hegemony of the past twenty-five years does not work: it has left a legacy of futile wars, failed diplomacy, and diminished (...) prestige for the United States. (shrink)

How holographic patterns of information underlie our physical reality.

Social relationships are constructed by and through the relational communication that people exchange. Relational messages are implicit nonverbal and verbal messages that signal how people regard one another and define their interpersonal relationships—equal or unequal, affectionate or hostile, inclusive or exclusive, similar or dissimilar, and so forth. Such signals can be measured automatically by the latest machine learning software tools and combined into meaningful factors that represent the socioemotional expressions that constitute relational messages between people. Relational messages operate continuously on (...) a parallel track with verbal communication, implicitly telling interactants the current state of their relationship and how to interpret the verbal messages being exchanged. We report an investigation that explored how group members signal these implicit messages through multimodal behaviors measured by sensor data and linked to the socioemotional cognitions interpreted as relational messages. By use of a modified Brunswikian lens model, we predicted perceived relational messages of dominance, affection, involvement, composure, similarity and trust from automatically measured kinesic, vocalic and linguistic indicators. The relational messages in turn predicted the veracity of group members. The Brunswikian Lens Model offers a way to connect objective behaviors exhibited by social actors to the emotions and cognitions being perceived by other interactants and linking those perceptions to social outcomes. This method can be used to ascertain what behaviors and/or perceptions are associated with judgments of an actor’s veracity. Computerized measurements of behaviors and perceptions can replace manual measurements, significantly expediting analysis and drilling down to micro-level measurement in a previously unavailable manner. (shrink)

Collaborative Virtual Environments (CVEs) are unique spaces that defy materialist interpretations of space and place. In drawing upon Edward Soja’s work of spatiality, CVEs can be considered as thirdspace, a space that has as much relevance as that typified by our physical, or ‘real,’ existence. Virtual space undermines the rigid polemic of the ‘real’ and ‘imaginary’ by revealing lived experience as a combination of both real and imagined experience. The virtual illuminates experience as a relativist combination of perception and interpretation (...) that inhabits both the corporeal and the virtual realms. Using the example of Second Life’s Lost Gardens of Apollo this article will illuminate the fluidity of real and imagined place through an environment of rich visual experience. Inaddition, such spaces will be discussed as places of potential social and political reconfiguration by challenging the traditional socio-cultural and historical aspects of space. (shrink)

Publication date: 15 October 2018 Source: Author: Jude Nwafor Eze, Coleen Vogel, Philip Audu Ibrahim Flood is known to cause devastating livelihood impacts, suffering and economic damages. To reduce the impact of floods, it is very important to identify and understand the socio-economic factors that determine people’s ability to cope with stress or change. Consequently, the study assesses the social vulnerability of the households to floods in Niger State, in order to provide the empirical evidence necessary for flood adaptation (...) policies and strategies in the state. The data for the research were obtained from the household survey and Dartmouth Flood Observatory. The data obtained were analysed using descriptive and statistical analysis. The results show that flood events in the study area were caused by heavy rainfall, compounded by the opening of the Shiroro dam gate to release the excess flood in the reservoir. Moreover, results of Student “t” test and One-Way Analysis of Variance on socio-economic characteristics show that households’ major economic activities, educational status, household size, income distribution, and membership of cooperative society were significant at p 10, do not belong to cooperative society and earn less that N21000 per month have higher mean frequency, thus, the predominant households were, therefore, farmers, illiterate, have large family size, poor, and have no access to loan. Thus, the socio-economic characteristics of the households in the study area contribute to their vulnerability to floods by reducing their coping capacity. Based on the results of the assessment, it is recommended that measures are taken to mainstream flood adaptation into the development process. (shrink)

Interpretations -- Interpreting the Middle Ages -- Interpreting modernity -- Interpreting Islam -- The prophetic voice of Von Hayek -- Benedict XVI -- The future Benedict XVI at Subiaco -- The jurisprudence of Benedict XVI -- Benedict on the nature of scientific enquiry -- Benedict on cultural identity -- Benedict XVI: an intellectual profile -- The philosophical enterprise -- One hundred years of philosophy -- The Catholic philosopher and the Catholic university in North America -- Aristotle in North America -- (...) Escaping the Cartesian trap: retrieving realism with Dreyfus, Taylor, and Yves Simon -- The present and the future -- The impact of Vatican II -- Socialist man -- The natural basis of the theological virtue of hope. (shrink)