An important application of cognitive architectures is to provide human performance models that capture psychological mechanisms in a form that can be “programmed” to predict task performance of human–machine system designs. Although many aspects of human performance have been successfully modeled in this approach, accounting for multitalker speech task performance is a novel problem. This article presents a model for performance in a two-talker task that incorporates concepts from psychoacoustics, in particular, masking effects and stream formation.

The debate about the relative epistemic weights carried in favour of a theory by predictions of new phenomena as opposed to accommodations of already known phenomena has a long history. We readdress the issue through a detailed re-examination of a particular historical case that has often been discussed in connection with it—that of Mendeleev and the prediction by his periodic law of the three ‘new’ elements, gallium, scandium and germanium. We find little support for the standard story that these predictive (...) successes were outstandingly important in the success of Mendeleev's scheme. Accommodations played an equal role—notably that of argon, the first of the ‘noble gases’ to be discovered; and the methodological situation in this chemical example turns out to be in interesting ways different from that in other cases—invariably from physics—that have been discussed in this connection. The historical episode when accurately analysed provides support for a different account of the relative weight of prediction and accommodation—one that is further articulated here. (shrink)

The article examines a recent interventionist account of causation by Ross, in which electronic configurations of atoms are considered to be the cause of chemical behavior. More specifically I respond to the claim that a change in electronic configuration of an atom, such as occurs in the artificial synthesis of elements, causes a change in the behavior of the atom in question. I argue that chemical behavior is governed as much by the nuclear charge of an atom as it is (...) by its electronic structure. It is suggested that an adequate analysis requires attention to the dynamical interactions between nuclear charges and those of electrons, as typically carried out through the application of the Schrödinger equation. It is concluded that electronic configurations can only be said be causal in a weak sense that is somewhat analogous to the causal arguments that are invoked in folk physics. (shrink)

This article carefully analyzes a recent paper by Weisberg in which it is claimed that when Mendeleev discovered the periodic table he was not working as a modeler but instead as a theorist. I argue that Weisberg is mistaken in several respects and that the periodic table should be regarded as a classification, not as a theory. In the second part of the article an attempt is made to elevate the status of classifications by suggesting that they provide a form (...) of ‘side-ways explanation’. (shrink)

Differing views on reduction are briefly reviewed and a suggestion is made for a working definition of 'approximate reduction'. Ab initio studies in quantum chemistry are then considered, including the issues of convergence and error bounds. This includes an examination of the classic studies on CH2 and the recent work on the Si2C molecule. I conclude that chemistry has not even been approximately reduced.

The article concerns five traditionally difficult issues that chemical educators encounter and how they should be resolved. In some cases I propose the examination of necessary and sufficient conditions in order to cast light on the relationships under discussion. The five educational issues are, the notion that a pH value of seven implies a neutral solution of water and vice versa, the use of Le Châtelier’s Principle, the relative occupation and ionization of 4s and 3d orbitals, the explanation of anomalous (...) electronic configurations and the elements that make up group 3 of the periodic table. (shrink)

In his latest book, Eric Scerri presents a completely original account of the nature of scientific progress. It consists of a holistic and unified approach in which science is seen as a living and evolving single organism. Instead of scientific revolutions featuring exceptionally gifted individuals, Scerri argues that the "little people" contribute as much as the "heroes" of science. To do this he examines seven case studies of virtually unknown chemists and physicists in the early 20th century quest to (...) discover the structure of the atom. They include the amateur scientist Anton van den Broek who pioneered the notion of atomic number as well as Edmund Stoner a then physics graduate student who provided the seed for Pauli's Exclusion Principle. Another case is the physicist John Nicholson who is virtually unknown and yet was the first to propose the notion of quantization of angular momentum that was soon put to good use by Niels Bohr. Instead of focusing on the logic and rationality of science, Scerri elevates the role of trial and error and multiple discovery and moves beyond the notion of scientific developments being right or wrong. While criticizing Thomas Kuhn's notion of scientific revolutions he agrees with Kuhn that science is not drawn towards an external truth but is rather driven from within. The book will enliven the long-standing debate on the nature of science, which has increasingly shied away from the big question of "what is science?". (shrink)

Given the crucial role unauthorized disclosures can play in uncovering grave government wrongdoing, it makes sense to search for a defense of justified cases of what I call “classified public whistleblowing.” The question that concerns me is what form such a defense should take. The main claim will be a negative one, namely, that a defense of whistleblowing cannot be based on individual rights, be they legal or moral, though this is indeed the most commonly proposed defense. In closing, I (...) will outline a more appealing alternative, namely, a justification defense. (shrink)

The historical development of the electronic configuration model is traced and the status of the model with respect to quantum mechanics is examined. The successes and problems raised by the model are explored, particularly in chemical ab initio calculations. The relevance of these issues to whether chemistry has been reduced to quantum mechanics is discussed, as are some general notions on reduction.

The periodic table of the elements is one of the most powerful icons in science: a single document that captures the essence of chemistry in an elegant pattern. Indeed, nothing quite like it exists in biology or physics, or any other branch of science, for that matter. One sees periodic tables everywhere: in industrial labs, workshops, academic labs, and of course, lecture halls. It is sometimes said that chemistry has no deep ideas, unlike physics, which can boast quantum mechanics and (...) relativity, and biology, which has produced the theory of evolution. This view is mistaken, however, since there are in fact two big ideas in chemistry. They are chemical periodicity and chemical bonding, and they are deeply interconnected. The observation that certain elements prefer to combine with specific kinds of elements prompted early chemists to classify the elements in tables of chemical affinity. Later these tables would lead, somewhat indirectly, to the discovery of the periodic system, perhaps the biggest idea in the whole of chemistry. Indeed, periodic tables arose partly through the attempts by Dimitri Mendeleev and numerous others to make sense of the way in which particular elements enter into chemical bonding. (shrink)

A critique of LaPorte's views on chemical kinds, like jade and ruby, is presented. More positively, a new slant is provided on the question of whether elements are natural kinds. This is carried out by appeal to the dual nature of elements, a topic that has been debated in the philosophy of chemistry but not in the natural kinds literature. It is claimed that the abstract notion of elements, as opposed to their being simple substances, is relevant to the Kripke–Putnam (...) approach to natural kinds and to some criticisms that have been raised against it, although I do not support the K–P account. The proposed view avoids the traditional microstructuralist approach to natural kinds. The article also addresses the question of whether natural kinds concern metaphysical or epistemological considerations. Recent attempts by chemists to modify the periodic table are brought to bear on the question of classification and consequently on whether the identification of elements is interest dependent. (shrink)

Natural Property Rights presents a novel theory of property based on individual, pre-political rights. The book argues that a just system of property protects people's rights to use resources and also orders those rights consistent with natural law and the public welfare. Drawing on influential property theorists such as Grotius, Locke, Blackstone, and early American statesmen and judges, as well as recent work in in normative and analytical philosophy, the book shows how natural rights guide political and legal reasoning about (...) property law. It examines how natural rights justify the most familiar institutions in property, including public property, ownership, the system of estates and future interests, leases, servitudes, mortgages, police regulation, and eminent domain. Thought-provoking and comprehensive, the book challenges leading contemporary justifications for property and shows how property both secures individual freedom and serves the common good. (shrink)

Although research has examined factors influencing understanding of informed consent in biomedical and forensic research, less is known about participants' attention to details in consent documents in psychological survey research. The present study used a randomized experimental design and found the majority of participants were unable to recall information from the consent form in both in-person and online formats. Participants were also relatively poor at recognizing important aspects of the consent form including risks to participants and confidentiality procedures. Memory effects (...) and individual difference characteristics also appeared to influence recall and recognition of consent form information. (shrink)

Although the periodic system of elements is central to the study of chemistry and has been influential in the development of quantum theory and quantum mechanics, its study has been largely neglected in philosophy of science. The present article is a detailed criticism of one notable exception, an attempt by Hettema and Kuipers to axiomatize the periodic table and to discuss the reduction of chemistry in this context.

The article begins with a response to a recent contribution by Jensen, in which he has criticized several aspects of the use of triads of elements, including Döbereiner’s original introduction of the concept and the modern use of atomic number triads by some authors including myself. Such triads are groups of three elements, one of which has approximately the average atomic weight of the other two elements, as well as having intermediate chemical reactivity. I also examine Jensen’s attempted reconstruction Mendeleev’s (...) use of triads in predicting the atomic weights of three hitherto unknown elements, that were subsequently named gallium, germanium and scandium. The present article then considers the use of atomic number triads, in conjunction with the phenomenon of first member anomaly, in order to offer support for Janet’s left-step periodic table, in which helium is relocated into group 2 of the table. Such a table features triads in which the 2nd and third elements of each group, without fail, fall into periods of equal length, a feature that is absent in the conventional 18-column or the conventional 32-column table. The dual sense of the term element, which is the source of much discussion in the philosophy of chemistry, is alluded to in further support of such a relocation of helium that may at first appear to contradict chemical intuition. (shrink)

Sir Karl Popper is one of the few authors to have discussed the reduction of chemistry. His approach consists of what I term naturalistic reduction, which I suggest bears close similarities to the way in which scientists regard reduction. The present article aims to build on Popper's insights into the nature of reduction in science and more specifically to suggest an approach to characterizing a specific sense of the notion of approximate reduction in the context of chemistry. In the course (...) of the discussion, one of Popper's better known passages on the reduction of chemistry is analysed in some detail. (shrink)

In this article, Severson explores the insights of Emmanuel Levinas regarding theodicy and the problem of evil. Levinas considers philosophical and practical justifications of suffering to be blasphemous, violating the sanctity of the suffering of the other person, even when well-meant. Severson introduces distinctions between “pain” and “suffering” to extrapolate and explain Levinas’s striking rejection of theodicy.

With the originality and energy that have marked his earlier works, Eric Wolf now explores the historical relationship of ideas, power, and culture. Responding to anthropology's long reliance on a concept of culture that takes little account of power, Wolf argues that power is crucial in shaping the circumstances of cultural production. Responding to social-science notions of ideology that incorporate power but disregard the ways ideas respond to cultural promptings, he demonstrates how power and ideas connect through the medium (...) of culture. Wolf advances his argument by examining three very different societies, each remarkable for its flamboyant ideological expressions: the Kwakiutl Indians of the Northwest Pacific Coast, the Aztecs of pre-Hispanic Mexico, and National Socialist Germany. Tracing the history of each case, he shows how these societies faced tensions posed by ecological, social, political, or psychological crises, prompting ideological responses that drew on distinctive, historically rooted cultural understandings. In each case study, Wolf analyzes how the regnant ideology intertwines with power around the pivotal relationships that govern social labor. Anyone interested in the history of anthropology or in how the social sciences make comparisons will want to join Wolf in _Envisioning Power_. (shrink)

Robin Hendry has recently argued that although the term ‘element’ has traditionally been used in two different senses, there has nonetheless been a continuity of reference. The present article examines this author’s historical and philosophical claims and suggests that he has misdiagnosed the situation in several respects. In particular it is claimed that Hendry’s arguments for the nature of one particular element, oxygen, do not generalize to all elements as he implies. The second main objection is to Hendry’s view that (...) the qua problem can be illuminated by appeal to the intention of scientists.Keywords: Element; Simple substance; Basic substance; Antoine Lavoisier; Dmitri Mendeleev; Reference; Qua problem. (shrink)

Though whistleblowing is quickly becoming an accepted means of addressing wrongdoing, whistleblower protection laws and the relevant case law are either awkwardly silent, unclear or mutually inconsistent concerning public disclosures of classified government information. I remedy this problem by first arguing that such disclosures constitute a pro tanto wrong as they violate (1) promissory obligations, (2) role obligations and (3) the obligation to respect the democratic allocation of power. However, they may be justified if (1) the information disclosed concerns grave (...) government wrongdoing, (2) alternative channels of disclosure are first exhausted and (3) steps are taken to minimize harm. (shrink)

The article discusses some of Heinz Post's views on correspondence and whether revolutions occur in science a la Kuhn. For example Post points out that the periodic table of the chemical elements has withstood any revolutions. Specific issues examined include the Paneth-Fajans controversy, the extent to which quantum mechanics provides an explanation for the periodic table and ab initio calculations in quantum chemistry.

The philosophy of chemistry has emerged in recent years as a new and autonomous field within the Anglo-American philosophical tradition. With the development of this new discipline, Eric Scerri and Grant Fisher's "Essays in Philosophy of Chemistry" is a timely and definitive guide to all current thought in this field. One of the themes of this collection is how philosophy of chemistry can make a contributions to problems of philosophy more generally, such as how chemistry and quantum chemistry contribute (...) to the philosophy of the mind. (shrink)

Abstract. The science and religion discourse in the Western academy, though expansive, has not paid significant enough attention to South Asian views, particularly those from Hindu thought. This essay seeks to address this issue in three parts. First, I present the South Asian standpoint as it currently relates to the science and religion discourse. Second, I survey and evaluate some available literature on South Asian approaches to the science and religion discourse. Finally, I promote three possible steps forward: (1) the (...) literature must shift from high Hindu philosophical religion to the more prevalent bhakti traditions, (2) the Indian context must be understood in its own right without metaphysical assumptions attached to the concepts of science and religion, and (3) most importantly, concepts unique to the Indian worldview, such as dharma, maya, and cit, must receive better treatment in translation in order to facilitate a more accurate exchange of ideas across cultural boundaries. (shrink)

It is commonly stated, by both whistleblower protection laws and political philosophers, that a breach of state secrecy by disclosing classified documents is justified if it serves the public interest. The problem with this defense of justified whistleblowing, however, is that the operative term – the public interest – is all too often left unclarified. This is problematic, because it leaves potential whistleblowers without sufficient certainty that their disclosures will be covered by the defense, leading many to err on the (...) side of caution and remain silent, depriving the public of much-needed information. Failing an agreed upon definition of the public interest or a process to determine it, judges’ applications of the public interest in whistleblowing cases have been criticized for demonstrating ‘judicial idiosyncrasy’. The present paper, therefore, sets out to provide some clarity concerning the concept of the public interest, and to ascertain the extent to which a public interest defense for whistleblowing is feasible and desirable. (shrink)

A chronological approach that examines the progression of Levinas's deliberations on time over six decades, thus providing new insights about aspects of Levinasian thought that have consistently troubled readers, including the differences between Levinas's early and later writings, his controversial invocation of the feminine, and the blurry line between philosophy and religion in his work"--Provided by publisher.

ABSTRACTIn scholarship on intellectual property, nonconsequentialist justifications for IP rights seem to suffer from one of two flaws. To some, such justifications seem indeterminate; they seem not to offer concrete guidance about how rights should be structured in practice. To others, such justifications seem dogmatic; they seem to mandate certain conclusions without letting decision makers consider the relevant context or consequences of different proposals to regulate IP. Both impressions neglect an important dimension of reasoning about rights—practical reason. In perfectionist theories (...) of law, ‘practical reason’ describes the principles by which general justifications for rights are implemented in specific decisions in politics and ethics. This article introduces practical reason to IP scholarship, and it shows how practical reason facilitates reasoning about the design of different legal IP rights. The article illustrates with patent’s novelty requirement, copyright’s originality requirement... (shrink)

This collection of essays was devised by the author to study how anthropology brought the study of complex societies and world systems in to its purview.

As ecologically and socially oriented food initiatives proliferate, the significance of these initiatives with respect to conventional food systems remains unclear. This paper addresses the transformative potential of alternative food networks by drawing on insights from recent research on food and embodiment, diverse food economies, and more-than-human food geographies. I identify several synergies between these literatures, including an emphasis on the pedagogic capacities of AFNs; the role of the researcher; and the analytical and political value of using assemblage and actor-network (...) thinking to understand the far-reaching forces and power disparities confronting proponents of more ethical and sustainable food futures. (shrink)

Robin Hendry has presented an account of two equally valid ways of understanding the nature of chemical bonding, consisting of what the terms the structural and the energetic views respectively. In response, Weisberg has issued a “challenge to the structural view”, thus implying that the energetic view is the more correct of the two conceptions. In doing so Weisberg identifies the delocalization of electrons as the one robust feature that underlies the increasingly accurate quantum mechanical calculations starting with the Heitler-London (...) method and moving on to such approaches as the valence bond and molecular orbital theories of chemical bonding. The present article provides a critical evaluation of Weisberg’s article and concludes that he fails to characterize the nature of chemical bonding in several respects. I claim that Hendry’s structural and energetic views remain as equally viable ways of understanding chemical bonding. Whereas the structural view is more appropriate for chemists, the energetic view is preferable to physicists. Neither view is more correct unless one subscribes to the naively reductionist view of considering that the more physical energetic view is the more correct one. (shrink)