Understanding terrestrial carbon metabolism is critical because terrestrial ecosystems play a major role in the global carbon cycle. Furthermore, humans have severely disrupted the carbon cycle in ways that will alter the climate system and directly affect terrestrial metabolism. Changes in terrestrial metabolism may well be as important an indicator of global change as the changing temperature signal. Improving our understanding of the carbon cycle at various spatial and temporal scales will require the integration of multiple, complementary and independent methods (...) that are used by different research communities. Tools such as air sampling networks, inverse numerical methods, and satellite data allow us to study the strength and location of the global- and continental-scale carbon sources and sinks. Bottom-up studies provide estimates of carbon fluxes at finer spatial scales and examine the mechanisms that control fluxes at the ecosystem, landscape, and regional scales. Bottom-up approaches include comparative and process studies that provide the necessary mechanistic information to develop and validate terrestrial biospheric models. An iteration and reiteration of top-down and bottom-up approaches will be necessary to help constrain measurements at various scales. We propose a major international effort to coordinate and lead research programs of global scope of the carbon cycle. (shrink)

There has recently been a good deal of controversy about Landauer's Principle, which is often stated as follows: The erasure of one bit of information in a computational device is necessarily accompanied by a generation of kTln2 heat. This is often generalised to the claim that any logically irreversible operation cannot be implemented in a thermodynamically reversible way. John Norton (2005) and Owen Maroney (2005) both argue that Landauer's Principle has not been shown to hold in general, and Maroney offers (...) a method that he claims instantiates the operation Reset in a thermodynamically reversible way. In this paper we defend the qualitative form of Landauer's Principle, and clarify its quantitative consequences (assuming the second law of thermodynamics). We analyse in detail what it means for a physical system to implement a logical transformation L, and we make this precise by defining the notion of an L-machine. Then we show that logical irreversibility of L implies thermodynamic irreversibility of every corresponding L-machine. We do this in two ways. First, by assuming the phenomenological validity of the Kelvin statement of the second law, and second, by using information-theoretic reasoning. We illustrate our results with the example of the logical transformation 'Reset', and thereby recover the quantitative form of Landauer's Principle. (shrink)

There has recently been a good deal of controversy about Landauer's Principle, which is often stated as follows: The erasure of one bit of information in a computational device is necessarily accompanied by a generation of kTln2 heat. This is often generalised to the claim that any logically irreversible operation cannot be implemented in a thermodynamically reversible way. John Norton and Owen Maroney both argue that Landauer's Principle has not been shown to hold in general, and Maroney offers a method (...) that he claims instantiates the operation Reset in a thermodynamically reversible way. In this paper we defend the qualitative form of Landauer's Principle, and clarify its quantitative consequences. We analyse in detail what it means for a physical system to implement a logical transformation L, and we make this precise by defining the notion of an L-machine. Then we show that logical irreversibility of L implies thermodynamic irreversibility of every corresponding L-machine. We do this in two ways. First, by assuming the phenomenological validity of the Kelvin statement of the second law, and second, by using information-theoretic reasoning. We illustrate our results with the example of the logical transformation 'Reset', and thereby recover the quantitative form of Landauer's Principle. (shrink)

In management research, theory testing confronts a paradox described by Meehl in which designing studies with greater methodological rigor puts theories at less risk of falsification. This paradox exists because most management theories make predictions that are merely directional, such as stating that two variables will be positively or negatively related. As methodological rigor increases, the probability that an estimated effect will differ from zero likewise increases, and the likelihood of finding support for a directional prediction boils down to a (...) coin toss. This paradox can be resolved by developing theories with greater precision, such that their propositions predict something more meaningful than deviations from zero. This article evaluates the precision of theories in management research, offers guidelines for making theories more precise, and discusses ways to overcome barriers to the pursuit of theoretical precision. (shrink)

Do dissociations imply independent systems? In the memory field, the view that there are independent implicit and explicit memory systems has been predominantly supported by dissociation evidence. Here, we argue that many of these dissociations do not necessarily imply distinct memory systems. We review recent work with a single-system computational model that extends signal-detection theory (SDT) to implicit memory. SDT has had a major influence on research in a variety of domains. The current work shows that it can be broadened (...) even further in its range of application. Indeed, the single-system model that we present does surprisingly well in accounting for some key dissociations that have been taken as evidence for independent implicit and explicit memory systems. (shrink)

The most arresting aspect of the Scottish Enlightenment is its conception of commercial society as a distinct and distinctive social formation. Christopher Berry explains why Enlightenment thinkers considered commercial society to be wealthier and freer than earlier forms, and charts the contemporary debates and tensions between Enlightenment thinkers that this idea raised. The book analyses the full range of literature on the subject, from key works like Adam Smith's 'Wealth of Nations', David Hume's 'Essays and Treatises on Several Subjects' (...) and Adam Ferguson's 'Essay on the History of Civil Society' to lesser-known works such as Robert Wallace's 'Dissertation on Numbers of Mankind'. (shrink)

We present a new modeling framework for recognition memory and repetition priming based on signal detection theory. We use this framework to specify and test the predictions of 4 models: (a) a single-system (SS) model, in which one continuous memory signal drives recognition and priming; (b) a multiple-systems-1 (MS1) model, in which completely independent memory signals (such as explicit and implicit memory) drive recognition and priming; (c) a multiple-systems-2 (MS2) model, in which there are also 2 memory signals, but some (...) degree of dependence is allowed between these 2 signals (and this model subsumes the SS and MS1 models as special cases); and (d) a dual-process signal detection (DPSD1) model, 1 possible extension of a dual-process theory of recognition (Yonelinas, 1994) to priming, in which a signal detection model is augmented by an independent recollection process. The predictions of the models are tested in a continuous-identification-with-recognition paradigm in both normal adults (Experiments 1–3) and amnesic individuals (using data from Conroy, Hopkins, & Squire,2005). The SS model predicted numerous results in advance. These were not predicted by the MS1 model, though could be accommodated by the more flexible MS2 model. Importantly, measures of overall model fit favored the SS model over the others. These results illustrate a new, formal approach to testing theories of explicit and implicit memory. (shrink)

In an adaptive clinical trial , key trial characteristics may be altered during the course of the trial according to predefined rules in response to information that accumulates within the trial itself. In addition to having distinguishing scientific features, adaptive trials also may involve ethical considerations that differ from more traditional randomized trials. Better understanding of clinical trial experts’ views about the ethical aspects of adaptive designs could assist those planning ACTs. Our aim was to elucidate the opinions of clinical (...) trial experts regarding their beliefs about ethical aspects of ACTs. (shrink)

David Hume, Adam Smith, William Robertson, Adam Ferguson, Lord Kames, John Millar, James Dunbar and Gilbert Stuart were at the heart of Scottish Enlightenment thought. This introductory survey offers the student a clear, accessible interpretation and synthesis of the social thought of these historically significant thinkers. Organised thematically, it takes the student through their accounts of social institutions, their critique of individualism, their methodology, their views of progress and of moral and cultural values. By taking human sociality as their premise, (...) the book shows how they produced important analyses of historical change, politics and morality, together with an assessment of their own commercial society. (shrink)

Preface Introduction Christopher J. Berry: Adam Smith: Outline of Life, Times, and Legacy Part One: Adam Smith: Heritage and Contemporaries 1: Nicholas Phillipson: Adam Smith: A Biographer's Reflections 2: Leonidas Montes: Newtonianism and Adam Smith 3: Dennis C. Rasmussen: Adam Smith and Rousseau: Enlightenment and counter-Enlightenment 4: Christopher J. Berry: Adam Smith and Early Modern Thought Part Two: Adam Smith on Language, Art and Culture 5: Catherine Labio: Adam Smith's Aesthetics 6: James Chandler: Adam Smith as Critic 7: (...) Michael C. Amrozowicz: Adam Smith: History and Poetics 8: C. Jan Swearingen: Adam Smith on Language and Rhetoric: The Ethics of Style, Character, and Propriety Part Three: Adam Smith and Moral Philosophy 9: Christel Fricke: Adam Smith: The Sympathetic Process and the Origin and Function of Conscience 10: Duncan Kelly: Adam Smith and the Limits of Sympathy 11: Ryan Patrick Hanley: Adam Smith and Virtue 12: Eugene Heath: Adam Smith and Self-Interest Part Four: Adam Smith and Economics 13: Tony Aspromourgos: Adam Smith on Labour and Capital 14: Nerio Naldi: Adam Smith on Value and Prices 15: Hugh Rockoff: Adam Smith on Money, Banking, and the Price Level 16: Maria Pia Paganelli: Commercial Relations: from Adam Smith to Field Experiments Part Five: Adam Smith on History and Politics 17: Spiros Tegos: Adam Smith: Theorist of Corruption 18: David M. Levy & Sandra J. Peart: Adam Smith and the State: Language and Reform 19: Fabrizio Simon: Adam Smith and the Law 20: Edwin van de Haar: Adam Smith on Empire and International Relations Part Six: Adam Smith on Social Relations 21: Richard Boyd: Adam Smith, Civility, and Civil Society 22: Gavin Kennedy: Adam Smith on Religion 23: Samuel Fleischacker: Adam Smith and Equality 24: Maureen Harkin: Adam Smith and Women Part Seven; Adam Smith: Legacy and Influence 25: Spencer J. Pack: Adam Smith and Marx 26: Craig Smith: Adam Smith and the New Right 27: Tom Campbell: Adam Smith: Methods, Morals and Markets 28: Amartya Sen: The Contemporary Relevance of Adam Smith. (shrink)

This article reviews recent work aimed at developing a new framework, based on signal detection theory, for understanding the relationship between explicit (e.g., recognition) and implicit (e.g., priming) memory. Within this framework, different assumptions about sources of memorial evidence can be framed. Application to experimental results provides robust evidence for a single-system model in preference to multiple-systems models. This evidence comes from several sources including studies of the effects of amnesia and ageing on explicit and implicit memory. The framework allows (...) a range of concepts in current memory research, such as familiarity, recollection, fluency, and source memory, to be linked to implicit memory. More generally, this work emphasizes the value of modern computational modelling techniques in the study of learning and memory. (shrink)

This manuscript describes a pilot study in ethics education employing a problem-based learning approach to the study of novel, complex, ethically fraught, unavoidably public, and unavoidably divisive policy problems, called “fractious problems,” in bioscience and biotechnology. Diverse graduate and professional students from four US institutions and disciplines spanning science, engineering, humanities, social science, law, and medicine analyzed fractious problems employing “navigational skills” tailored to the distinctive features of these problems. The students presented their results to policymakers, stakeholders, experts, and members (...) of the public. This approach may provide a model for educating future bioscientists and bioengineers so that they can meaningfully contribute to the social understanding and resolution of challenging policy problems generated by their work. (shrink)

Introduction No consent for health and medical research is appropriate when the criteria for a waiver of consent are met, yet some ethics committees and data custodians still require informed consent. Methods A single-blind parallel-group randomised controlled trial: 1129 families of children born at a South Australian hospital were sent information explaining data linkage of childhood immunisation and hospital records for vaccine safety surveillance with 4 weeks to opt in or opt out by reply form, telephone or email. A subsequent (...) telephone interview gauged the intent of 1026 parents (91%) in relation to their actions and the sociodemographic differences between participants and non-participants in each arm. Results The participation rate was 21% (n=120/564) in the opt-in arm and 96% (n=540/565) in the opt-out arm (χ2 (1 df) = 567.7, p<0.001). Participants in the opt-in arm were more likely than non-participants to be older, married/de facto, university educated and of higher socioeconomic status. Participants in the opt-out arm were similar to non-participants, except men were more likely to opt out. Substantial proportions did not receive, understand or properly consider study invitations, and opting in or opting out behaviour was often at odds with parents' stated underlying intentions. Conclusions The opt-in approach resulted in low participation and a biased sample that would render any subsequent data linkage unfeasible, while the opt-out approach achieved high participation and a representative sample. The waiver of consent afforded under current privacy regulations for data linkage studies meeting all appropriate criteria should be granted by ethics committees, and supported by data custodians. Trial registration number Australian New Zealand Clinical Trials Registry ACTRN12610000332022. (shrink)

My focus is Hume's advertised attempt to establish foundationally a science of man. Though it is not his sole motivation, central to this effort is his intention to undermine the credibility of superstitious, supernatural accounts of what makes humans and their social life function. The argument of this paper is that attempts to downplay Hume's universalism and, in virtue of his recognition of diversity, to identify him as subscribing to some form of historicism or relativism, are mistaken or at best (...) fail to apprehend the centrality of his assault on unscientific accounts of human nature. (shrink)

In The Ethics of Food, Gregory E. Pence brings together a collection of voices who share the view that the ethics of genetically modified food is among the most pressing societal questions of our time. This comprehensive collection addresses a broad range of subjects, including the meaning of food, moral analyses of vegetarianism and starvation, the safety and environmental risks of genetically modified food, issues of global food politics and the food industry, and the relationships among food, evolution, and human (...) history. (shrink)

This article argues that to call Hume a conservative is a shorthand label that is at least insecure and at most a distortion. It is not claimed that the label is fanciful or without justification but the argument does serve to raise questions as to its accuracy once it is subject to further inspection and, consequently, to doubt its aptness or utility in capturing what is a key characteristic of Hume’s sociopolitical thought. This argument is constituted as follows. After some (...) preliminary refinement of the topic, part I, in order to establish that the paper is not attacking a ‘straw-man’, identifies, by using Oakeshott as a benchmark, those aspects of Hume’s thought that most securely underwrite attributing the conservative label. Part II constructs an argument to render the conservative label insecure, by drawing attention to the case for Hume as a liberal. Part III outlines the grounds for the further claim that when Hume’s commitment to ‘science’ and his polemics against superstition, and other ‘chimerical’ practices and principles, are taken on board then the stronger case that the label is a distortion can be judged to have substance. (shrink)

Research has shown that adults can engage in cognitive offloading, whereby internal processes are offloaded onto the environment to help task performance. Here, we investigate an application of this approach with children, in particular children with poor working memory. Participants were required to remember and recall sequences of colors by placing colored blocks in the correct serial order. In one condition the blocks were arranged to facilitate cognitive offloading (i.e., grouped by color), whereas in the other condition they were arranged (...) randomly. Across two experiments (total N = 166) the ordered condition improved task performance for children with low working memory ability. In addition, participants in Experiment 2 rated the difficulty of the two arrangements and performed a further condition in which they were given an opportunity to freely arrange the blocks before completing the task. Despite performing better in the ordered condition, children with low working memory ability did not rate the ordered arrangement as easier, nor did they choose an ordered arrangement when given the opportunity to do so. This research shows that cognitive offloading can also be a useful process in populations other than typical adults, and the implications of this work for supporting children with poor working memory are discussed. (shrink)

This is both a modest and a presumptuous work. It is presumptuous because, given the vast literature on just one of its themes, it attempts to discuss not only the philosophies of both Hume and Hegel but also something of their intellectual milieu. Moreover, though the study has a delimiting perspective in the relation ship between a theory of human nature and an account of the various aspects that make up social experience, this itself is so central and protean that (...) it has necessitated a discussion of, amongst others, theories of history, language, aesthetics, law and politics. Yet it is a modest work in that, although I do think I have some fresh things to say, the study does not propose any revolutionary new reading of the material. I am not here interested in the relative validity of the theories put forward - I do not 'take sides'. Nevertheless it is part of the modest intent that recourse to Hume and Hegel in arguments pertaining to human nature will be better inform ed and more discriminating as a consequence of this study. Additionally, some distinctions herein made also shed light on some assumptions made in contem porary debates in the philosophy of social science, especially those concerning the understanding of alien belief-systems. (shrink)

This chapter examines a key focal characteristic of the Scottish Enlightenment, namely, its delineation of how a ‘science of man’ can inform and structure an account of ‘society’. The key contribution of the Scots to the rise of the human sciences lies in a conception of society as a set of interlocked institutions and behaviours. The Scots provided an analysis of both social statics and social dynamics, which shifted the focus away from the individualism that characterized early modern jurisprudence. Humans (...) as social beings are best understood in society and not as monadic individuals. The Scottish analysis also sidelined the centrality traditionally allotted to the political. Humans are social as well as political animals. Political institutions are simply one kind of institution among several, to be given no greater priority than the rest. (shrink)

Due to the ethical breaches of tobacco companies over a 50-year period, a U.S. Court ruled in United States v. Philip Morris USA, Inc. that major U.S. tobacco companies had misled consumers and the government about tobacco’s addictiveness, effects of environmental smoke, marketing targeted at adolescents, and deceptive practices related to harmfulness of smoking. We address the actions of the tobacco companies based on the consumer’s right to be informed and values for ethical corporate behavior, and we draw from psychological (...) theories and the smoking literature to develop our conceptual framework and test the effectiveness of the ensuing corrective advertising campaign mandated in the Court decision. We use a quota sample of 470 smokers and non-smoker participants in a longitudinal study to test the impact of the corrective advertising campaign on key antismoking beliefs from the campaign. Results reveal that the corrective ad campaign has not been successful in affecting smokers’ or non-smokers’ antismoking beliefs. However, differences are found between smokers’ and non-smokers’ beliefs about the adverse health effects of smoking, effects of secondhand smoke, and tobacco company deceptiveness, with these beliefs being stronger for non-smokers. Smokers’ weaker beliefs about the effects of secondhand smoke are viewed as particularly problematic, given the established health risks. We address the implications of the ethical breaches and the corrective advertising attempt to address the deception identified by the Court. (shrink)

The respective rejections of contractarian explanations and justifications of political allegiance by hume and hegel are outlined. The difference between these rejections is located in a change in conceptualizations of the relationship between human nature and history and this is illustrated by a discussion of herder. In consequence, Hegel does not reproduce hume's arguments because hume's own rejection, Both historical and philosophical, Of contractarianism was premised on the very principles that hegel rejects in his theoretical rejection of rousseau's theoretical reformulation (...) of the notion. (shrink)

That there is some connection between politics and human nature is a commonplace, but why and in what way they are conjoined is disputed. Aristotle's practice of comparing humans with other animals, and not conceptually divorcing them, is fruitful. By adopting a similar practice an indirect linkage (rather than Aristotle's direct one) between human nature and politics is identified. The strategy is to locate at least one universal aspect of human nature which is non‐political that, nonetheless, carries with it a (...) requirement that universally calls forth a political response. The aspect is reproductive sex and the need to ensure that offspring survive. In humans, the natural fact of paternal uncertainty is dealt with by conventions, but, because of this, these vary (for example, as between matrilineal and patrilineal kinship systems). But what is necessitated amid this variety is a need to establish an authoritative allocation of responsibility for nurture. Politics is the exercise of that authority. However, because of its roots in conventions called forth by human nature, the link is indirect. The conclusion is that contemporary attempts to re‐establish a direct link are bound to be inconclusive. (shrink)

Like other Enlightenment thinkers, Hume provides a formal account of social life with a substantive theory of rationality. Hume has a noncontextualist theory of human nature. Human nature possesses certain constant and universal principles, the operation of which are unaffected by history of sociocultural contexts. Some social practices are more rational, more "in tune" with human nature, than others. Although Hume is resigned to the fact that customs are too deep-rooted to be eradicated, his theories of rationality and social life (...) permit him to identify and censure superstition. (shrink)

According to Hume, humans, unlike other group-living animals, cannot accommodate their natural sexual appetite naturally; this is a Rawlsian 'circumstance of justice'. Humans have to formulate conventions or artifices to govern their reproductive relations in order to maintain their group or social life. Hume implicitly addresses this issue in his discussion of chastity. The paper explicates his argument. This argument, and its underlying philosophical anthropology, is seen to embody a distinctive approach to a striking feature of the human condition -- (...) sexual relations are universal but not uniform. (shrink)

This book provides a theoretical and practical exploration of the constitutional bar against cruel and unusual punishments, excessive bail, and excessive fines. It explores the history of this prohibition, the current legal doctrine, and future applications of the Eighth Amendment. With contributions from the leading academics and experts on the Eighth Amendment and the wide range of punishments and criminal justice actors it touches, this volume addresses constitutional theory, legal history, federalism, constitutional values, the applicable legal doctrine, punishment theory, prison (...) conditions, bail, fines, the death penalty, juvenile life without parole, execution methods, prosecutorial misconduct, race discrimination, and law & science. (shrink)

The essay investigates the proposition that economic questions are a fit subject for science. This investigation will involve a selective examination of seventeenth-century writings before looking at again selective Enlightenment texts. The essay is deliberately wide ranging, but it aims to pick out the emergence or crystallization of political economy by noting how theorists sought to establish it as a subject matter and in the process develop ways of studying it that aimed to uncover regularities and exhibit generality, systematicity, and (...) precision. Together these supported its pretensions or claims to be a science that would in a Baconian manner be useful and free of the perceived shackles of a moralistic classical disparagement of economic activity. (shrink)

The search for a worldwide environmental ethic is linked to the increase in environmental concern since (particularly) the 1960s, and the recognition that environ mental problems can have a global impact. Numerous people and organizations have put forward their understanding of the necessary components of such an ethic and these have converged in a series of international statements ( Stockholm Declaration on the Human Environment , 1972; World Charter for Nature , 1982; Rio Declaration on Environment and Development , 1992; (...) International Covenant on Environment and Development, 1995 ). A small number of common elements have emerged. These can be expressed in 10 'premises', which may form the basis for developing into an acceptable worldwide ethic, along the lines called for in the revised World Conservation Strategy, Caring for the Earth , 7991. (shrink)

OBJECTIVES: To show that a Local Research Ethics Committee (LREC) can carry out an audit of ethical standards in research. To find out if a researcher met certain ethical standards in recruiting subjects for clinical trials and in obtaining their consent. DESIGN: Postal questionnaire. SETTING: Clinical research by one doctor during one year. SUBJECTS: Eleven patients entered in clinical trials. MAIN OUTCOME MEASURES: Success in ethics committee obtaining data. Achievement of ethical standards in recruitment of subjects and in obtaining consent. (...) RESULTS: The audit was successfully carried out and standards were partly met. CONCLUSIONS: Local Research Ethics Committees can carry out audits of the conduct of research projects which they have approved. Provision for possible audits can be made at the time of application to the committee. Our committee thought the ethical standards in the research which we audited were acceptable. (shrink)