Aim: Participation in classroom physical activity breaks may improve children’s cognition, but few studies have involved adolescents. The primary aim of this study was to examine the effects of classroom-based resistance training with and without cognitive training on adolescents’ cognitive function.Methods: Participants were 97 secondary school students. Four-year 10 classes from one school were included in this four-arm cluster randomized controlled trial. Classes were randomly assigned to the following groups: sedentary control with no cognitive training, sedentary with cognitive training, resistance (...) training without cognitive training, and resistance training with cognitive training. Sessions varied in levels of both cognitive demand and resistance training and were administered three times per week for 4 weeks. Inhibition, cognitive flexibility, episodic memory, on-task behavior, and muscular fitness were assessed at baseline and post-test. Linear mixed models were used to examine changes within and between groups.Results: In comparison with the control group, episodic memory improved significantly in the resistance training without cognitive training group. There were no group-by-time effects for inhibition or cognitive flexibility. Classroom activity breaks both with and without cognitive demand improved participants’ on-task behavior in comparison with the control and sedentary group. The resistance training programs did not lead to improvements in muscular fitness.Conclusion: Participation in body weight resistance training without cognitive training led to selective improvements in episodic memory. No training effects were found for inhibition or cognitive flexibility. A longer study period may be necessary to induce improvements in muscular fitness and associated changes in inhibition and cognitive flexibility.Clinical Trial Registration:https://www.anzctr.org.au/ACTRN12621001341819.aspx, Australian New Zealand Clinical Trials Registry—ACTRN12621001341819. (shrink)

Introductory, by B. H. Streeter.--Love and omnipotence, by C. F. D'Arcy.--The survival of the fittest, by Lily Dougall.--Power, by Lily Dougall.--The defeat of pain, by B. H. Streeter.

This book proposes a new paradigm for the interpretation of Plato's early and middle dialogues. Rejecting the usual assumption of a distinct 'Socratic' period in the development of Plato's thought, this view regards the earlier works as deliberate preparation for the exposition of Plato's mature philosophy. Differences between the dialogues do not represent different stages in Plato's own thinking but rather different aspects and moments in the presentation of a new and unfamiliar view of reality. Once the fictional character of (...) the Socratic genre is recognised, there is no reason to regard Plato's early dialogues as representing the philosophy of the historical Socrates. The result is a unified interpretation of all of the dialogues down to the Republic and the Phaedrus. (shrink)

The propensity interpretation of fitness (PIF) is commonly taken to be subject to a set of simple counterexamples. We argue that three of the most important of these are not counterexamples to the PIF itself, but only to the traditional mathematical model of this propensity: fitness as expected number of offspring. They fail to demonstrate that a new mathematical model of the PIF could not succeed where this older model fails. We then propose a new formalization of the PIF that (...) avoids these (and other) counterexamples. By producing a counterexample-free model of the PIF, we call into question one of the primary motivations for adopting the statisticalist interpretation of fitness. In addition, this new model has the benefit of being more closely allied with contemporary mathematical biology than the traditional model of the PIF. (shrink)

Through criticism and analysis of ancient traditions, Kahn reconstructs the pattern of Anaximander’s thought using historical methods akin to the reconstructive techniques of comparative linguists.

This volume presents a series of essays published by Charles Kahn over a period of forty years, in which he seeks to explicate the ancient Greek concept of ...

Despite his position as one of the first philosophers to write in the “post- Darwinian” world, the critique of Darwin by Friedrich Nietzsche is often ignored for a host of unsatisfactory reasons. I argue that Nietzsche’s critique of Darwin is important to the study of both Nietzsche’s and Darwin’s impact on philosophy. Further, I show that the central claims of Nietzsche’s critique have been broadly misunderstood. I then present a new reading of Nietzsche’s core criticism of Darwin. An important part (...) of Nietzsche’s response can best be understood as an aesthetic critique of Darwin, reacting to what he saw as Darwin having drained life of an essential component of objective aesthetic value. For Nietzsche, Darwin’s theory is false because it is too intellectual, because it searches for rules, regulations, and uniformity in a realm where none of these are to be found – and, moreover, where they should not be found. Such a reading goes furthest toward making Nietzsche’s criticism substantive and relevant. Finally, I attempt to relate this novel explanation of Nietzsche’s critique to topics in contemporary philosophy of biology, particularly work on the evolutionary explanation of culture. (shrink)

The ninth and tenth chapters of the Origin mark a profound, if perhaps difficult to detect, shift in the book’s argumentative structure. In the previous few chapters and in the ninth, Darwin has been exploring a variety of objections to natural selection, some more obvious (where are all the fossils of transitional forms?) and some showing careful attention to challenging consequences of evolution (could selection really produce instincts?). Starting in the tenth, however, Darwin turns to showing us what kinds of (...) new and unexpected results evolutionary theory might be able to offer us, again in domains both predictable (extinction) and unexpected (biogeography, embryology). It is notable that it is the fossil record that serves as this pivot point, being both a source of potentially powerful objections to evolutionary theory and home to some of its most compelling new explanations. In this chapter, I present both sets of arguments and consider what role Darwin gave to fossil evidence, in the process attempting to discover why it might have played this unique role in two different parts of Darwin’s “long argument” for evolution by natural selection. Geology’s special place, I argue, derives at least in part from its particular importance in Darwin’s social and intellectual context. (shrink)

Landauer's principle, often regarded as the basic principle of the thermodynamics of information processing, holds that any logically irreversible manipulation of information, such as the erasure of a bit or the merging of two computation paths, must be accompanied by a corresponding entropy increase in non-information-bearing degrees of freedom of the information-processing apparatus or its environment. Conversely, it is generally accepted that any logically reversible transformation of information can in principle be accomplished by an appropriate physical mechanism operating in a (...) thermodynamically reversible fashion. These notions have sometimes been criticized either as being false, or as being trivial and obvious, and therefore unhelpful for purposes such as explaining why Maxwell's Demon cannot violate the second law of thermodynamics. Here I attempt to refute some of the arguments against Landauer's principle, while arguing that although in a sense it is indeed a straightforward consequence or restatement of the Second Law, it still has considerable pedagogic and explanatory power, especially in the context of other influential ideas in nineteenth and twentieth century physics. Similar arguments have been given by Jeffrey Bub. (shrink)

Im 12. Jahrhundert ging in Byzanz eine bemerkenswerte Blute des Aristotelismus von einem philosophischen Zirkel aus, den die vom politischen Leben ausgeschlossene Kaisertochter Anna Komnene unterhielt. Eustratios von Nikaia und Michael von Ephesos arbeiteten zusammen an einem Kommentar zur Nikomachischen Ethik im Auftrage Annas. Eustratios kommentierte die Bucher I und VI, Michael von Ephesos die Bucher V, IX und X. Ausserdem liegen von Michael mehrere Kommentare zur Naturphilosophie des Aristoteles vor, wahrend wir von Eustratios den hier wiedergegebenen Kommentar zu Buch (...) II der Analytica posteriora besitzen. Die lateinische Ubersetzung des Posteriora-Kommentars (zusammen mit einer kurzen anonymen Erklarung des Werkes) durch den Mediziner Andrea Grazioli leitete eine neue Epoche in der Deutung der aristotelischen Wissenschaftstheorie ein. (shrink)

This book proposes a new paradigm for the interpretation of Plato's early and middle dialogues. Rejecting the usual assumption of a distinct 'Socratic' period in the development of Plato's thought, this view regards the earlier works as deliberate preparation for the exposition of Plato's mature philosophy. Differences between the dialogues do not represent different stages in Plato's own thinking but rather different aspects and moments in the presentation of a new and unfamiliar view of reality. Once the fictional character of (...) the Socratic genre is recognised, there is no reason to regard Plato's early dialogues as representing the philosophy of the historical Socrates. The result is a unified interpretation of all of the dialogues down to the Republic and the Phaedrus. (shrink)

Philosophy of science is expanding via the introduction of new digital data and tools for their analysis. The data comprise digitized published books and journal articles, as well as heretofore unpublished material such as images, archival text, notebooks, meeting notes, and programs. The growth in available data is matched by the extensive development of automated analysis tools. The variety of data sources and tools can be overwhelming. In this article, we survey the state of digital work in the philosophy of (...) science, showing what kinds of questions can be answered and how one can go about answering them. (shrink)

According to our data, 38.5 % of S&P 1500 firms have at least one professor on their boards. Given the lack of research examining the roles and effects of academic faculty as members of boards of directors on corporate outcomes, this study investigates whether firms with professor–directors are more likely to exhibit higher corporate social responsibility performance ratings. Results indicate that firms with professor–directors do exhibit higher CSR performance ratings than those without. However, the influence of professor–directors on firm CSR (...) performance ratings depends on their academic background—the positive association between the presence of professor–directors and firm CSR performance ratings is significant only when their academic background is specialized. Finally, this positive association weakens when professor–directors hold an administrative position at their universities. (shrink)

Recent arguments concerning the nature of causation in evolutionary theory, now often known as the debate between the 'causalist' and 'statisticalist' positions, have involved answers to a variety of independent questions – definitions of key evolutionary concepts like natural selection, fitness, and genetic drift; causation in multi-level systems; or the nature of evolutionary explanations, among others. This Element offers a way to disentangle one set of these questions surrounding the causal structure of natural selection. Doing so allows us to clearly (...) reconstruct the approach that some of these major competing interpretations of evolutionary theory have to this causal structure, highlighting particular features of philosophical interest within each. Further, those features concern problems not exclusive to the philosophy of biology. Connections between them and, in two case studies, contemporary metaphysics and philosophy of physics demonstrate the potential value of broader collaboration in the understanding of evolution. (shrink)

With the end of the cold war, issues of environment and economic development are assuming greater international salience. By the 1970s, environmental degradation was becoming pervasive, with growing global effects. Increasingly, global and emergent globalized problems are forcing environmental interdependence on the world. Transboundary threats cannot be addressed unilaterally by any single country or group of countries. The global environmental agenda is reviving the North-South debate and rejuvenating the Third World coalition in international fora. The encouragement of environmentally sustainable forms (...) of industrialization in the South requires expanded and improved international cooperation. However, the North’s greater resources and greater responsibility in causing global environmental degradation require its continuing involvement in the search for solutions, including ones applicable to newly industrializing countries. In June 1992, the largest intergovernmental conference ever held was convened in Rio de Janeiro to address these issues: the United Nations Conference on Environment and Development (UNCED, or the Earth Summit). It produced a consensus action plan of about 700 pages: Agenda 21. Agenda 21 presents massive challenges for international cooperation as well as for national and private actors and scientific and technical institutions. It reflects a complex configuration of demands for institutional arrangements that support environmentally sustainable technical and socioeconomic change. One of the most consistent of the Agenda 21 themes, and one of the most intractable issues, concerns “access to technology.” This can be as straightforward as diagnosing and improving the efficiency of a production process in a small manufacturing firm, or as complex as engineering a technological revolution in which production and consumption take place with virtually no material or energy loss to the environment. The selection of entry points for action is a critical strategic problem as well as an important operational issue. In this paper I identify and describe new initiatives intended to improve the environmental performance of industry in the South, and find that they largely aim to promote incremental industrial innovation through international technology transfer and diffusion. This strategy raises many questions about how to promote effective technology transfer and diffusion. (shrink)

The Rise of Chance in Evolutionary Theory: A Pompous Parade of Arithmetic explores a pivotal conceptual moment in the history of evolutionary theory: the development of its extensive reliance on a wide array of concepts of chance. It tells the history of a methodological and conceptual development that reshaped our approach to natural selection over a century, ranging from Darwin’s earliest notebooks in the 1830s to the early years of the Modern Synthesis in the 1930s. Far from being a “pompous (...) parade of arithmetic,” as one early critic argued, evolution transformed during this period to make these conceptual and technical tools indispensable. This book charts the role of chance in evolutionary theory from its beginnings to the earliest days of modern evolutionary theory, making it an ideal resource for evolutionary biologists, historians, philosophers, and researchers in science studies or biological statistics. (shrink)

Plato's late dialogues have often been neglected because they lack the literary charm of his earlier masterpieces. Charles Kahn proposes a unified view of these diverse and difficult works, from the Parmenides and Theaetetus to the Sophist and Timaeus, showing how they gradually develop the framework for Plato's late metaphysics and cosmology. The Parmenides, with its attack on the theory of Forms and its baffling series of antinomies, has generally been treated apart from the rest of Plato's late work. (...) Kahn shows that this perplexing dialogue is the curtain-raiser on Plato's last metaphysical enterprise: the step-by-step construction of a wider theory of Being that provides the background for the creation story of the Timaeus. This rich study, the natural successor to Kahn's earlier Plato and the Socratic Dialogue, will interest a wide range of readers in ancient philosophy and science. (shrink)

The idea of ‘reversion’ or ‘atavism’ has a peculiar history. For many authors in the latenineteenth and early-twentieth centuries – including Darwin, Galton, Pearson, Weismann, and Spencer, among others – reversion was one of the central phenomena which a theory of heredity ought to explain. By only a few decades later, however, Fisher and others could look back upon reversion as a historical curiosity, a non-problem, or even an impediment to clear theorizing. I explore various reasons that reversion might have (...) appeared to be a central problem for this first group of figures, focusing on their commitment to a variety of conceptual features of evolutionary theory; discuss why reversion might have then ceased to be an interesting phenomenon; and, finally, close with some more general thoughts about the death of scientific problems. (shrink)

Two fundamental business ethics issues that repeatedly surface in the academic literature relate to business's role in the development of public policy [Suarez, S. L.: 2000, Does Business Learn? (The University of Michigan Press, Ann Arbor, MI); Roberts, R. W. and D. D. Bobek: 2004, Accounting, Organizations and Society 29(5-6), 565-590] and its role in responsibly managing the natural environment [Newton, L.: 2005, Business Ethics and the Natural Environment (Blackwell Publishing, Oxford)]. When studied together, researchers often examine if, and how, (...) corporations influence environmental policy decisions. Drawing from literatures on corporate political activity, corporate social and environmental performance, and corporate environmental disclosure, we develop and empirically examine two research questions concerning the relations between corporate political expenditures, environmental performance, and environmental disclosure. The questions are: (1) Do corporations that are poorer environmental performers spend more on political activities than their better-performing counterparts? (2) Is there an association between corporations' spending on political activities and the extent of their financial report environmental disclosures? We investigated these questions through analyses of data we gathered on a sample consisting of 119 U.S. environmentally sensitive firms for the 2001-2002 election cycle. After controlling for firm size and specific industry effects, our tests reveal a significant, inverse relationship between firm environmental performance and political spending. This is consistent with the notion that U.S. firms with relatively poorer environmental performance records engage more intensely in corporate political activities as part of their overall strategic management of their relationship with the state. In addition, a significant and positive association between the amount of political spending and the extent of environmental disclosure suggests that environmental disclosure and political spending are both proactive, complementary tactics to strategically manage public policy pressure. If corporations' strategies are intentionally designed to unreasonably limit their environmental responsibilities or to misrepresent firm environmental performance, then we argue that these activities reflect a significant lapse in ethical conduct. (shrink)

A fascinating portrait of the Pythagorean tradition, including a substantial account of the Neo-Pythagorean revival, and ending with Johannes Kepler on the threshold of modernism.

The observed complexity of nature is often attributed to an intrinsic propensity of matter to self-organize under certain (e.g., dissipative) conditions. In order better to understand and test this vague thesis, we define complexity as “logical depth,” a notion based on algorithmic information and computational time complexity. Informally, logical depth is the number of steps in the deductive or causal path connecting a thing with its plausible origin. We then assess the effects of dissipation, noise, and spatial and other symmetries (...) of the initial conditions and equations of motion on the asymptotic complexity-generating abilities of statistical-mechanical model systems. We concentrate on discrete, spatially-homogeneous, locally-interacting systems such as kinetic Ising models and cellular automata. (shrink)

There are a bewildering variety of claims connecting Darwin to nineteenth-century philosophy of science—including to Herschel, Whewell, Lyell, German Romanticism, Comte, and others. I argue here that Herschel’s influence on Darwin is undeniable. The form of this influence, however, is often misunderstood. Darwin was not merely taking the concept of “analogy” from Herschel, nor was he combining such an analogy with a consilience as argued for by Whewell. On the contrary, Darwin’s Origin is written in precisely the manner that one (...) would expect were Darwin attempting to model his work on the precepts found in Herschel’s Preliminary Discourse on Natural Science. While Hodge has worked out a careful interpretation of both Darwin and Herschel, drawing similar conclusions, his interpretation misreads Herschel’s use of the vera causa principle and the verification of hypotheses. The new reading that I present here resolves this trouble, combining Hodge’s careful treatment of the structure of the Origin with a more cautious understanding of Herschel’s philosophy of science. This interpretation lets us understand why Darwin laid out the Origin in the way that he did and also why Herschel so strongly disagreed, including in Herschel’s heretofore unanalyzed marginalia in his copy of Darwin’s book. (shrink)

My aim here is to make sense of Plato's account of desire in the middle dialogues. To do that I need to unify or reconcile what are at first sight two quite different accounts: the doctrine of eros in the Symposium and the tripartite theory of motivation in the Republic. It may be that the two theories are after all irreconcilable, that Plato simply changed his mind on the nature of human desire after writing the Symposium and before composing the (...) Republic. But that conclusion can be justified only if attempts to reconcile the two theories end in failure. The attempt must be made first. (shrink)

It has long been recognized that cancer onset and progression represent a type of reversion to an ancestral quasi‐unicellular phenotype. This general concept has been refined into the atavistic model of cancer that attempts to provide a quantitative analysis and testable predictions based on genomic data. Over the past decade, support for the multicellular‐to‐unicellular reversion predicted by the atavism model has come from phylostratigraphy. Here, we propose that cancer onset and progression involve more than a one‐off multicellular‐to‐unicellular reversion, and are (...) better described as a series of reversionary transitions. We make new predictions based on the chronology of the unicellular‐eukaryote‐to‐multicellular‐eukaryote transition. We also make new predictions based on three other evolutionary transitions that occurred in our lineage: eukaryogenesis, oxidative phosphorylation and the transition to adaptive immunity. We propose several modifications to current phylostratigraphy to improve age resolution to test these predictions. Also see the video abstract here: https://youtu.be/3unEu5JYJrQ. (shrink)

There is a widespread assumption that the universe in general, and life in particular, is 'getting more complex with time'. This book brings together a wide range of experts in science, philosophy and theology and unveils their joint effort in exploring this idea. They confront essential problems behind the theory of complexity and the role of life within it: what is complexity? When does it increase, and why? Is the universe evolving towards states of ever greater complexity and diversity? If (...) so, what is the source of this universal enrichment? This book addresses those difficult questions, and offers a unique cross-disciplinary perspective on some of the most profound issues at the heart of science and philosophy. Readers will gain insights in complexity that reach deep into key areas of physics, biology, complexity science, philosophy and religion. (shrink)

Alongside other types of mass atrocities, genocide has received extensive scholarly, policy, and practitioner attention. Missing, however, is the contribution of economists to better understand and prevent such crimes. This edited collection by 41 accomplished scholars examines economic aspects of genocides, other mass atrocities, and their prevention. Chapters include numerous case studies, probing literature reviews, and completely novel work based on extraordinary country-specific datasets. Also included are chapters on the demographic, gendered, and economic class nature of genocide. Replete with research- (...) and policy-relevant findings, new insights are derived from behavioral economics, law and economics, political economy, macroeconomic modeling, microeconomics, development economics, industrial organization, identity economics, and other fields. Analytical approaches include constrained optimization theory, game theory, and sophisticated statistical work in data-mining, econometrics, and forecasting.A foremost finding of the book concerns atrocity architects' purposeful, strategic use of violence, often manipulating nonrational proclivities among ordinary people to sway their participation in mass murder. Relatively understudied in the literature, the book also analyzes the options of victims before, during, and after mass violence. Further, the book shows how well-intended prevention efforts can backfire and increase violence, how wrong post-genocide design can entrench vested interests to reinforce exclusion of vulnerable peoples, and how businesses can become complicit in genocide. In addition to the necessity of healthy opportunities in employment, education, and key sectors in prevention work, the book shows why new genocide prevention laws and institutions must be based on reformulated incentives that consider insights from law and economics, behavioral economics, and collective action economics. (shrink)