This paper investigates how environmental structure, given the innate properties of a population, affects the degree to which this population can adapt to the environment. The model we explore involves simple agents in a 2-d world which can sense a local food distribution and, as specified by their genomes, move to a new location and ingest the food there. Adaptation in this model consists of improving the genomic sensorimotor mapping so as to maximally exploit the environmental resources. We vary environmental (...) structure to see its specific effect on adaptive success. In our investigation, two properties of environmental structure, conditioned by the sensorimotor capacities of the agents, have emerged as significant factors in determining adaptive success: (1) the information content of the environment which quantifies the diversity of conditions sensed, and (2) the expected utility for optimal action. These correspond to the syntactic and pragmatic aspects of environmental information, respectively. We find that the ratio of expected utility to information content predicts adaptive success measured by population gain and information content alone predicts the fraction of ideal utility achieved. These quantitative methods and specific conclusions should aid in understanding the effects of environmental structure on evolutionary adaptation in a wide range of evolving systems, both artificial and natural. (shrink)

One important problem in cognitive science is to understand the development of cognitive processes in children and to devise computer models to explore the mechanisms that underlie these changes. Our research addresses these general goals. In particular, we are concerned with developmental changes in cognitive strategies in typical children and in children with mild mental retardation.

Exploring online criticisms of the ‘take the knee’ protest during ‘Euro 2020’, this article examines how alt- and far-right conspiracies were both constructed and communicated via the social media platform, Twitter. By providing a novel exploration of alt-right conspiracies during an international football tournament, a qualitative thematic analysis of 1,388 original tweets relating to Euro 2020 was undertaken. The findings reveal how, in criticisms levelled at both ‘wokeism’ and the Black Lives Matter movement, antiwhite criticisms of the ‘take the knee’ (...) protest were embroiled in alt-right conspiracies that exposed an assumed Cultural Marxist, ‘woke agenda’ in the tournament’s organization and mainstream media coverage. In conclusion, it is argued that conspiratorial discourses, associated with the alt-right, provided a framework through which the protest could be understood. This emphasises how the significance of conspiracy functions to promote the wider dissemination of alt-right ideology across popular cultural contexts, such as sport. (shrink)

Many are calling for concrete mechanisms of oversight for health research involving artificial intelligence (AI). In response, institutional review boards (IRBs) are being turned to as a familiar model of governance. Here, we examine the IRB model as a form of ethics oversight for health research that uses AI. We consider the model's origins, analyze the challenges IRBs are facing in the contexts of both industry and academia, and offer concrete recommendations for how these committees might be adapted in order (...) to provide an effective mechanism of oversight for health‐related AI research. (shrink)

This collection explores the phenomenon of the messianic in contemporary philosophy, religion and culture. From the later Derrida’s work on Marx and Benjamin to Agamben and Badiou’s recent texts on St Paul, it is becoming possible to detect a marked ‘messianic turn’ in contemporary continental thought. However, despite the plethora of work in the field there has not been any sustained attempt to think through the larger philosophical, theological and cultural implications of this phenomenon. What, then, characterises our contemporary messianic (...) moment? Where does it come from? And why speak of the messianic now? In _The Messianic Now: Philosophy, Religion, Culture_, a group of internationally-known figures and rising stars within the fields of continental philosophy, religious studies and cultural studies come together to consider what the messianic might mean at the beginning of the 21 st century. This book was published as a special issue of the Journal of _Cultural Research._. (shrink)

Philosophers have long theorized about what makes people's lives go well, and why, and the extent to which morality and self-interest can be reconciled. However, we have spent little time on meta-prudential questions, questions about prudential discourse—thought and talk about what is good and bad for us; what contributes to well-being; and what we have prudential reason, or prudentially ought, to do. This situation is surprising given that prudence is, prima facie, a normative form of discourse and cries out for (...) further investigation of what it is like and whether it has problematic commitments. It also marks a stark contrast from moral discourse, about which there has been extensive theorizing, in meta-ethics. -/- Dear Prudence: The Nature and Normativity of Prudential Discourse has three broad aims. Firstly, Guy Fletcher explores the nature of prudential discourse. Secondly, he argues that prudential discourse is normative and authoritative, like moral discourse. Thirdly, Fletcher aims to show that prudential discourse is worthy of further, explicit, attention both due to its intrinsic interest but also for the light it sheds on the meta-normative more broadly. (shrink)

In lieu of an abstract, here is a brief excerpt of the content:Clinical Bioethics at NIH:History and A New VisionJohn C. Fletcher (bio)On July 3, 1995, Dr. John I. Gallin, Director of the Magnuson Clinical Center of the National Institutes of Health (NIH), convened a one-day "Conference on the Future of Clinical Bioethics at the National Institutes of Health Intramural Program." Conferees included NIH officials and a panel of consultants from bioethics programs around the nation.1 The subject was the (...) future of NIH's intramural bioethics program and specifically a vision of a new multi-component program, presented by Dr. Gallin, the first speaker. Dr. Harold Varmus, Director of NIH, was there to assure his support for Dr. Gallin's vision. This author, honored to be second speaker, was invited to sketch a brief history of bioethics at NIH. The present article reviews some of this history and then reports on Dr. Gallin's proposal, points of consensus among speakers and conferees, and the search for a Chief of the Clinical Bioethics Program.History of Bioethics at NIHIt is often said that NIH is a well-kept secret as the nation's leading biomedical research facility. Also, few people know that NIH has a long history in bioethics. Some key events in that history are shown in Figure 1, beginning with two that occurred prior to the birth of bioethics. NIH made an early policy response to protect human subjects of research and to find acceptable limits for scientific freedom. The Clinical Center (CC), a 550-bed research hospital, opened in 1953. A subcommittee of the Medical Board, the Clinical Research Committee (CRC), was formed for prior group review of all studies with normal volunteers. The traditional practice was for researchers themselves to decide when studies would begin, which subjects to recruit, and whether informed consent would be sought. The CRC intervention bit into this tradition. In addition, patient studies that posed significant risks or departed widely from medical practice were reviewed by referral from the Clinical Directors of the various Institutes. Was this CRC an early institutional review [End Page 355] board (IRB)? As a guest researcher, I was permitted to observe the CRCs meetings between 1966 and 1969. It functioned much like an IRB but had no community or non-scientist members. Other IRB-like review groups undoubtedly existed prior to the CRC. Robert Levine (personal communication, September 7, 1995) recalls that Beth Israel Hospital in Boston had one in 1938. Historical research is clearly needed on the earliest forms of research review.Table 1. Bioethics at NIHEventYearClinical Research Committee1953Surgeon-General's PPO #1291966NIGMS funds Hastings Genetics Group1973OPRR's Mission1974NLM's grant to KennedyInstitute for Bibliography of Bioethics1974Recombinant DNA Advisory Committee1974STEP Series Bioethics Speakers1975Pre-IRBs at the CC1975-76Assistant for Bioethics to Director, CC1977RAC-Human Gene Therapy Subcommittee1983Lipsett Proposal (ICD)1983Liaison Group, CC1983Bioethics Program, CC1985Durable Power of Attorney for Researchwith Incapacitated Subjects1985-86NLM funds National Reference Centerfor Bioethics Literature1985National Institute for Nursing Research1986Bioethics Post-Doctoral Fellows Program1989ELSI Program1989Bioethicists on CC-IRBs1989CC-Ethics Committee1990Office of Human Subjects Research1992 [End Page 356]Between 1963 and 1967, the media exposed instances of ethically troubling research, and Beecher (1966) and Pappworth (1967) published sharp criticisms of the weak state of research ethics. In 1966, Surgeon-General William Stewart and NIH Director James Shannon issued a policy requiring local group review of all research involving human subjects before making an application for NIH peer review (Surgeon General 1966). The policy was the first in any nation to mandate ethics committees for clinical research. However, it did not apply to the NIH intramural program until Congress passed the National Research Act in 1974 (Public Law 93-348; 202, 88 Stat. 342, 1974). This lag permitted NIH intramural investigators the luxury of feeling above the norms imposed on ordinary mortals and guaranteed more resistance to the inevitable change to come. Resistance to change marked the intramural program from the mid-1960s to the mid-1970s... (shrink)

This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work.This work is in the public domain in (...) the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work.As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant. (shrink)

In lieu of an abstract, here is a brief excerpt of the content:Reviewed by:An Ethical Life: A Practical Guide to Ethical Reasoning by Richard KyteChristine FletcherAn Ethical Life: A Practical Guide to Ethical Reasoning Richard Kyte WINONA, NM: ANSELM ACADEMIC, 2012. 254 PP. $25.95Richard Kyte's introductory guide to ethics is designed to meet three concerns about current ethics textbooks: they tend to decrease students' confidence in their ability to think, they inculcate a distrust of deliberative processes, and they create an (...) appearance of moral relativism. Kyte succeeds in creating a text that overcomes these deficiencies. He uses common language and examples while remaining rigorous and fully explaining the common ethical theories.He opens with a chapter debunking thirteen misconceptions about ethics, such as "Ethics Is 'Nothing but Words,'" "Ethics Is Just a Matter of Opinion," and "Ethics Is Separate from Religion." This chapter should set the tone for a class that doesn't allow sloppy thinking or the reduction of ethics to feelings. The chapter concludes by defining ethics as common sense, meaning "the ability to find shared meaning in the words we use together to make sense of our lives" (51).The second chapter examines four ways of ethical thinking: truth, thinking in terms of the facts of the situation; consequences, thinking in terms of the results of an action; fairness, thinking in terms of equality and consistency; and character, thinking in terms of people's motivations, character traits, or both. He then uses practical problems to illustrate how, by using these four ways of ethical thinking, a conversation working toward an agreed-on action can take place. Ethics is no longer a shouting match but a way of appreciating different points of view and coming to a reasoned conclusion.The following chapters explore these four ways of ethical thinking. Chapter 3, "Truth," on its own would be an excellent text for any course that has "critical thinking" as a learning outcome. He covers moral responsibility, bias, self-deception, and power with succinct but powerful illustrations from life. He then moves on to discernment, which includes a discussion of good reading, evaluating sources of information, and evaluating arguments, including examples of the most common fallacies. His examples are from diverse sources such as Mark Twain's Life on the Mississippi, E. M. Forster's A Passage to India, the Bible, Francis Bacon, and situations in ordinary life. This gives richness to the text and presents these concepts in an accessible and interesting way.The next three chapters, "Consequences," "Fairness," and "Character," cover the main features of utilitarianism, deontological ethics, and virtue ethics [End Page 191] in good detail, with summaries about major figures associated with these theories: Jeremy Bentham, John Stuart Mill, Epictetus, Immanuel Kant, Aristotle, and St. Thomas Aquinas. These give the students biographical information as well as the significance of each thinker's work, explaining the key features, strengths, and weaknesses of their theories. The chapter on character has a very helpful discussion of the cardinal and theological virtues. Each chapter has suggestions for further reading.The appendix covers how to use this four-way method in group decision-making and in writing case studies or issues analyses, helpfully including an example of each. This book is written by a gifted teacher who draws students into his subject, shows them its relevance, and helps them develop the confidence and skills they need to take their part in the ethical conversations that will occur throughout their lives. It is an excellent text on its own or as a supplement to a standard textbook in professional ethics.Christine FletcherBenedictine UniversityCopyright © 2017 Society of Christian Ethics... (shrink)

Apollodorus' Bibliotheca is often used, though little studied. Like any author, however, Apollodorus has his own aims. As scholars have noticed, he does not include any discussion of Rome and rarely mentions Italy, an absence they link to tendencies of the Second Sophistic, during which period he was writing. I refine this view by exploring the nature of Apollodorus' project as a whole, showing that he creates a system of genealogies that connects Greece with other places and peoples of the (...) ancient world, specifically the Near East. The nature of the Bibliotheca allows us to see these myths as a closed system, in which these genealogical connections depend upon the perceived importance of these peoples; e.g. the Persians have more connections with the Greeks than the Molossians do. It is from this system that Apollodorus excludes Rome, thereby denying the Romans any genealogical connections with the Greeks and thus marking them as being of little importance. The consciousness of Apollodorus' decisions is clear from the many opportunities he had to include Rome and the fact that his sources contained myths about Rome or Italy. The Bibliotheca is a tendentious account of Greek myth with its own goals, and our knowledge of Apollodorus' aims must condition any use of this text. (shrink)

Evidence for instances of astrophysical 'fine tuning' (or 'coincidences') is thought by some to lend support to the design argument (i.e. the argument that our universe has been designed by some deity). We assess some of the relevant empirical and conceptual issues. We argue that astrophysical fine tuning calls for some explanation, but this explanation need not appeal to the design argument. A clear and strict separation of the issue of anthropic fine tuning on one hand and any form of (...) Eddingtonian numerology and teleology on the other, may help clarify arguably the most significant issue in the philosophy of cosmology. (shrink)

An innocent form of emergence—what I call "weak emergence"—is now a commonplace in a thriving interdisciplinary nexus of scientific activity—sometimes called the "sciences of complexity"—that include connectionist modelling, non-linear dynamics (popularly known as "chaos" theory), and artificial life.1 After defining it, illustrating it in two contexts, and reviewing the available evidence, I conclude that the scientific and philosophical prospects for weak emergence are bright.

In the wake of the Supreme Court Decision, Dobbs v. Jackson Women’s Health Organization, Minkoff, Vullikanti, and Marshall (2024) argue that the unraveling of the constitutional right to abortion t...

Weak emergence has been offered as an explication of the ubiquitous notion of emergence used in complexity science (Bedau 1997). After outlining the problem of emergence and comparing weak emergence with the two other main objectivist approaches to emergence, this paper explains a version of weak emergence and illustrates it with cellular automata. Then it explains the sort of downward causation and explanatory autonomy involved in weak emergence.

: Can passing antidiscrimination laws ever be a bad idea? Yes, if broad policy reform is abandoned in favor of genetic-specific legislation. But in spite of its serious flaws, both in concept and in practice, genetic-specific legislation is sometimes worth passing anyway—sometimes a bad idea is reasonable.

Hoerl & McCormack's theory defines temporal behavior from an awareness of time, but lacks one critical element: the impact of “psychological presence” in the “moment now.” Central to experience of temporal non-stationarity: “Nowness” links future with past in the context of time flow. Does this differ between species? Evidence suggests not: Different temporal experiences between species requires greater critical evaluation.

Child soldiers are generally perceived as faultless, passive victims. This ignores that the roles of child soldiers vary, from innocent abductee to wilful perpetrator. This book argues that child soldiers should be judged on their actions and that treating them like a homogenous group prevents them from taking responsibility for their acts.

Abstract:Moral imagination is a reasoning process thought to counter the organizational factors that corrupt ethical judgment. We describe the psychology of moral imagination as composed of the four decision processes identified by Rest (1986), i.e., moral sensitivity, moral judgment, moral intention, and moral behavior. We examine each process in depth, distilling extant psychological research and indicating organizational implications. The conclusion offers suggestions for future research.The majority of men are subjective toward themselves and objective toward all others—terribly objective sometimes—but the real (...) task is in fact to be objective toward one’s self and subjective toward all others. (shrink)

This book includes ten essays that trace the notion of unconcealment as it develops from Heidegger's early writings to his later work, shaping his philosophy of truth, language and history. 'Unconcealment' is the idea that what entities are depends on the conditions that allow them to manifest themselves. This concept, central to Heidegger's work, also applies to worlds in a dual sense: first, a condition of entities manifesting themselves is the existence of a world; and second, worlds themselves are disclosed. (...) The unconcealment or disclosure of a world is the most important historical event, and Heidegger believes there have been a number of quite distinct worlds that have emerged and disappeared in history. Heidegger's thought as a whole can profitably be seen as working out the implications of the original understanding of unconcealment. (shrink)

Public health is a dynamic field. Outbreaks of new diseases, as well as changing patterns of population growth, economic development, and lifestyle trends all may threaten public health and thus demand a public health response. As the practice of public health evolves, there is an ongoing need to reassess its scientific, ethical, legal, and social underpinnings. Such a reappraisal must consider the disagreement among public health officials, public health scholars, elected officials, and the public about the proper role of public (...) health and the distinctions, for example, between public health and clinical care, and public health and health promotion.In this article I will attempt to characterize the main points of contention as well as offer my own views regarding the proper scope of public health. Greater clarity and consensus on the meaning of public health are likely to lead to more efficient and effective public health interventions as well as increased public and political support for public health activities. (shrink)

Huston Smith has argued that the universal source of wholeness, which he refers to as the primordial tradition, is essential to a meaningful life. Indeed embracing this tradition is, said Smith, an act of rejoining the human race. Our current forms of organized religion offer us ritualized expressions of this tradition, yet often fail to provide us with transpersonal growth; it is this transpersonal growth that reconnects us with the source of religion. This essay differentiates mainstream religion from a way (...) that we can begin to construct a physical theory of the primordial tradition–a necessary first step toward reclaiming the source of religion. (shrink)

Teaching graduate students how to do research can be a challenge for many instructors because "research education" is not an established field of research like other areas of teaching such as mathematics education, nursing education, science education, and statistics education. There are no scholarly journals devoted solely to teaching research methods; these sources are instead scattered across disciplines and journals (e.g., Nurse Researcher, Volume 13, Number 2, 2005; Sociology, Volume 15, Issue 4, 1981; and Scandinavian Journal of Educational Research, Volume (...) 49, Issue 1, 2005). Furthermore, even though research methods courses are a staple in most graduate training programs, instructors were rarely taught how to teach research methods as part of their own graduate programs. Left to their own devices, instructors of research courses must rely on a network of peers, scattered research literature, and much trial-and-error as they develop and improve upon their own research methods courses. (shrink)

Conventional wisdom and many published histories of “Green Chemistry” describe its start as being a result of governmental and/or regulatory actions at the US Environmental Protection Agency during the early 1990’s. But there were many Real World industrial examples of environmentally friendly commercial processes in the oil and commodity chemicals industries for decades prior to the 1990s. Some early examples of commercial “Green Chemistry” are briefly described in this article. The Boots/Hoechst Celanese Ibuprofen process was one of the earliest multiple-award-winning (...) examples of industrial “Green Chemistry” in the fine chemical/pharmaceutical industry. The author, who conceived the BHC Ibuprofen synthetic strategy in 1984, reveals and documents that the BHC Ibuprofen process was not primarily a result of governmental or regulatory mandates, or environmentalist or political motivations. The BHC ibuprofen process, and probably many other early industrial “green” inventions, evolved from, and their development and commercialization motivated and guided by, a long prior industrial culture of both scientific and technical evolution. The invention and commercialization of these early industrial commercialized processes, and the BHC Ibuprofen process were also guided by both competitive and economic market needs, personal human motivations, and a low waste culture of “Quality” and “Continuous Improvement” that the commodity chemical industry internally promoted in the 1980’s. The author comments on some perceptions of the status of Green Chemistry now, and directions it should consider going in the future. The author recommends that young Green Chemists and/or Green Engineers reconsider “Quality” approaches in order to genuinely lead Society toward a Greener future. (shrink)

Public health is a dynamic field. Outbreaks of new diseases, as well as changing patterns of population growth, economic development, and lifestyle trends all may threaten public health and thus demand a public health response. As the practice of public health evolves, there is an ongoing need to reassess its scientific, ethical, legal, and social underpinnings. Such a reappraisal must consider the disagreement among public health officials, public health scholars, elected officials, and the public about the proper role of public (...) health and the distinctions, for example, between public health and clinical care, and public health and health promotion.In this article I will attempt to characterize the main points of contention as well as offer my own views regarding the proper scope of public health. Greater clarity and consensus on the meaning of public health are likely to lead to more efficient and effective public health interventions as well as increased public and political support for public health activities. (shrink)

The National Center for Biomedical Ontology is now in its seventh year. The goals of this National Center for Biomedical Computing are to: create and maintain a repository of biomedical ontologies and terminologies; build tools and web services to enable the use of ontologies and terminologies in clinical and translational research; educate their trainees and the scientific community broadly about biomedical ontology and ontology-based technology and best practices; and collaborate with a variety of groups who develop and use ontologies and (...) terminologies in biomedicine. The centerpiece of the National Center for Biomedical Ontology is a web-based resource known as BioPortal. BioPortal makes available for research in computationally useful forms more than 270 of the world's biomedical ontologies and terminologies, and supports a wide range of web services that enable investigators to use the ontologies to annotate and retrieve data, to generate value sets and special-purpose lexicons, and to perform advanced analytics on a wide range of biomedical data. (shrink)

Artificial life uses computer models to study the essential nature of the characteristic processes of complex adaptive systems proceses such as self-organization, adaptation, and evolution. Work in the field is guided by the working hypothesis that simple computer models can capture the essential nature of these processes. This hypothesis is illustrated by recent results with a simple population of computational agents whose sensorimotor functionality undergo open-ended adaptive evolution. These might illuminate three aspects of complex adaptive systems in general: punctuated equilibrium (...) dynamics of diversity, a transition separating genetic order and disorder, and a law of adaptive evolutionary activity. (shrink)

Dasein and being-in-the-world -- The world -- The structure of being-in-the-world, pt. 1: Disposedness and moods -- The structure of being-in-the-world, pt. 2: Understanding and interpretation -- Everydayness and the 'one' -- Death and authenticity -- Truth and art -- Language -- Technology -- Our mortal dwelling with things.

This book explores the making of health care rationing decisions through the analysis of three alternative decision makers: patients paying out of pocket; officials setting limits on treatments and coverage; and physicians at the bedside. Hall develops this analysis along three dimensions: political economics, ethics, and law. The economic dimension addresses the practical feasibility of each method. The ethical dimension discusses the moral aspects of these methods, while the legal dimension traces the most recent developments in jurisprudence and health law.

For more than a quarter of a century, Hubert L. Dreyfus has been the leading voice in American philosophy for the continuing relevance of phenomenology, particularly as developed by Edmund Husserl, Martin Heidegger, and Maurice Merleau-Ponty. Dreyfus has influenced a generation of students and a wide range of colleagues, and these volumes are an excellent representation of the extent and depth of that influence.In keeping with Dreyfus's openness to others' ideas, many of the essays in this volume take the form (...) of arguments with various of his positions. The essays focus on the dialogue with the continental philosophical tradition, in particular the work of Heidegger, that has played a foundational role in Dreyfus's thinking. The sections are Philosophy and Authenticity; Modernity, Self, and the World; and Heideggerian Encounters. The book concludes with Dreyfus's responses to the essays.Contributors : William D. Blattner, Taylor Carman, David R. Cerbone, Dagfinn Føllesdal, Charles Guignon, Michel Haar, Beatrice Han, Alastair Hannay, John Haugeland, Randall Havas, Jeff Malpas, Mark Okrent, Richard Rorty, Julian Young, Michael E. Zimmerman. (shrink)

The importance of preserving trust in physicians and in medical institutions has received widespread attention in recent years. Primarily, this is due to the threats to trust posed by managed care, but there is a general and growing recognition that trust deserves more attention than it traditionally has received in all aspects of medical ethics, law, and public policy. Trust has both intrinsic and instrumental value. Trust is intrinsically important because it is a core characteristic that affects the emotional and (...) interpersonal aspects of the physician/patient relationship. As an instrumental value, trust is widely believed to be essential for effective therapeutic encounters. It has been hypothesized or shown to affect a host of important behaviors and attitudes relating to care, including seeking care, disclosing private information, complying with treatment, and being satisfied with care. Moreover, trust may be a mediator of measurable clinical outcomes and a key factor in the mind–body interactions that underlie placebo/nocebo effects and the effectiveness of alternative medicine. It is no surprise, then, that preserving, justifying, and enhancing trust is the fundamental goal of much of medical ethics, and is a prominent objective in healthcare law and public policy. Discussions of trust and related concepts were commonplace in professionally based medical ethics prior to the 1970s. a 1 2. (shrink)

Prompted by the development of the Theory of Challenge and Threat States in Athletes (Jones et al, 2009), recent years has witnessed a considerable increase in research examining challenge and threat in sport. This manuscript provides a critical review of the literature examining challenge and threat in sport, tracing its historical development and some of the current empirical ambiguities. In an attempt to reconcile some of these ambiguities, and utilising neurobiological evidence associated with approach- and avoidance-motivation (cf. Elliot & Covington, (...) 2001), this paper draws upon the Evaluative Space Model (ESM: Cacioppo et al., 1997) and considers the implications for understanding challenge and threat in sport. For example, rather than see challenge and threat as opposite ends of a single bipolar continuum, the ESM implies that individuals could be (1) challenged, (2) threatened, (3) challenged and threatened, or (4) neither challenged or threatened by a particular stimulus. From this perspective it could be argued that the appraisal of some sport situations as both challenging and threatening could be advantageous, whereas the current literature seems to imply that the appraisal of stress as a threat is maladaptive for performance. In drawing upon the ESM, we outline the Evaluative Space Approach to Challenge and Threat and provide several testable hypotheses for advancing understanding of challenge and threat (in sport). We also outline a number of cardiovascular and experiential measures that can be used to examine these hypotheses. In sum, this paper provides a significant theoretical, empirical and practical contribution to our understanding of challenge and threat (in sport). (shrink)

Dieser Aufsatz analysiert Leibniz' Begriff der Expression. Er ist eine Vorstudie zu einer umfassenden Untersuchung der Lehre, daß jede einfache Substanz das ganze Weltall ausdrückt. Leibnizens Beispiele und Definitionen von Expression werden besprochen, und dann wird die Analyse des Begriffs in zwei Stufen entwickelt.