The phenomenon of digital differentiation, or stark variations in ability to access Internet hardware and/or infrastructure, has been a feature of provision since its early days. This article explores the impact of digital differentiation on two groups of young people, in England and Germany. It is based on fieldwork that took place during the academic year 2018-2019, just before the global pandemic threw the issue of equality of Internet access into sharp relief. The article begins by describing the empirical design (...) of the My Life Online project, including background, sampling, instruments, ethical aspects and the initial data analysis approach taken to ensure reliability and validity. It then develops a further analysis drawing on Halford and Savage’s hybrid Bourdieu/Actor Network Theory model (2010) to map out the socio-technical network surrounding the young people in our study. In this way we identify areas of change and conflict that compound existing social deprivation. We conclude by making a case for a better education policy awareness of the key issues, and more equitable distribution of national infrastructure moving forwards. (shrink)

This essay explains how, from the theoretical perspective of Basil Bernstein's three “conditions for democracy,” the current pedagogy of artificially intelligent personalized learning seems inadequate. Building on Bernstein's comprehensive work and more recent research concerned with personalized education, Natalia Kucirkova and Sandra Leaton Gray suggest three principles for advancing personalized education and artificial intelligence (AI). They argue that if AI is to reach its full potential in terms of promoting children's identity as democratic citizens, its pedagogy must (...) go beyond monitoring the technological progression of personalized provision of knowledge. It needs to pay more careful attention to the democratic impact of data-driven systems. Kucirkova and Leaton Gray propose a framework to distinguish the value of personalized learning in relation to pluralization and to guide educational researchers and practitioners in its application to socially just classrooms. (shrink)

This article explores the role of changing memes in large systems change toward marriage equality—popularly referred to as same-sex marriage—in the United States. Using an abbreviated case history of the transformation, the article particularly explores the shifting memes or core units of culture, in this case, word phrases associated with marriage equality over time, influencing the social change process. Using both the case history and the empirical work on memes, the article identifies nine lessons to support others tackling large systems (...) change challenges. (shrink)

Throughout the biological and biomedical sciences there is a growing need for, prescriptive ‘minimum information’ (MI) checklists specifying the key information to include when reporting experimental results are beginning to find favor with experimentalists, analysts, publishers and funders alike. Such checklists aim to ensure that methods, data, analyses and results are described to a level sufficient to support the unambiguous interpretation, sophisticated search, reanalysis and experimental corroboration and reuse of data sets, facilitating the extraction of maximum value from data sets (...) them. However, such ‘minimum information’ MI checklists are usually developed independently by groups working within representatives of particular biologically- or technologically-delineated domains. Consequently, an overview of the full range of checklists can be difficult to establish without intensive searching, and even tracking thetheir individual evolution of single checklists may be a non-trivial exercise. Checklists are also inevitably partially redundant when measured one against another, and where they overlap is far from straightforward. Furthermore, conflicts in scope and arbitrary decisions on wording and sub-structuring make integration difficult. This presents inhibit their use in combination. Overall, these issues present significant difficulties for the users of checklists, especially those in areas such as systems biology, who routinely combine information from multiple biological domains and technology platforms. To address all of the above, we present MIBBI (Minimum Information for Biological and Biomedical Investigations); a web-based communal resource for such checklists, designed to act as a ‘one-stop shop’ for those exploring the range of extant checklist projects, and to foster collaborative, integrative development and ultimately promote gradual integration of checklists. (shrink)

In aging humans, aerobic exercise interventions have been found to be associated with more positive or less negative changes in frontal and temporal brain areas, such as the anterior cingulate cortex (ACC) and hippocampus, relative to no-exercise control conditions. However, individual measures such as gray-matter (GM) probability may afford less reliable and valid conclusions about maintenance or losses in structural brain integrity than a latent construct based on multiple indicators. Here, we established a latent factor of GM structural integrity (...) based on GM probability assessed by voxel-based morphometry, magnetization transfer saturation, and mean diffusivity. Based on this latent factor, we investigated changes in structural brain integrity during a six-month exercise intervention in brain regions previously reported in studies using volumetric approaches. Seventy-five healthy, previously sedentary older adults aged 63–76 years completed an at-home intervention study in either an exercise group (EG;n= 40) or in an active control group (ACG;n= 35). Measures of peak oxygen uptake (VO2peak) taken before and after the intervention revealed a time-by-group interaction, with positive average change in the EG and no reliable mean change in the ACG. Significant group differences in structural brain integrity changes were observed in the right and left ACC, right posterior cingulate cortex (PCC), and left juxtapositional lobule cortex (JLC). In all instances, average changes in the EG did not differ reliably from zero, whereas average changes in the ACG were negative, pointing to maintenance of structural brain integrity in the EG, and to losses in the ACG. Significant individual differences in change were observed for right ACC and left JLC. Following up on these differences, we found that exercising participants with greater fitness gains also showed more positive changes in structural integrity. We discuss the benefits and limitations of a latent-factor approach to changes in structural brain integrity, and conclude that aerobic fitness interventions are likely to contribute to brain maintenance in old age. (shrink)

Regular musical activity as a complex multimodal lifestyle activity is proposed to be protective against age-related cognitive decline and Alzheimer’s disease. This cross-sectional study investigated the association and interplay between musical instrument playing during life, multi-domain cognitive abilities and brain morphology in older adults from the DZNE-Longitudinal Cognitive Impairment and Dementia Study study. Participants reporting having played a musical instrument across three life periods were compared to controls without a history of musical instrument playing, well-matched for reserve proxies of education, (...) intelligence, socioeconomic status and physical activity. Participants with musical activity outperformed controls in global cognition, working memory, executive functions, language, and visuospatial abilities, with no effects seen for learning and memory. The musically active group had greater gray matter volume in the somatosensory area, but did not differ from controls in higher-order frontal, temporal, or hippocampal volumes. However, the association between gray matter volume in distributed frontal-to-temporal regions and cognitive abilities was enhanced in participants with musical activity compared to controls. We show that playing a musical instrument during life relates to better late-life cognitive abilities and greater brain capacities in OA. Musical activity may serve as a multimodal enrichment strategy that could help preserve cognitive and brain health in late life. Longitudinal and interventional studies are needed to support this notion. (shrink)

Although high-performance human resource practices do not directly affect corporate social performance strengths, they do positively affect CSP strengths in companies that are highly innovative or have high levels of slack. High-performance human resource management practices also directly and negatively affect CSP concerns. Drawing on the resource-based view and using secondary data from an objective, third-party database, the authors develop and test hypotheses about how high-performance HRM affects a company’s CSP strengths and concerns. Findings suggest that HRM and innovation are (...) important capabilities because they create and enhance other capabilities. (shrink)

This book is an intercultural exploration of the full scope of evil. The problems of evil have beset humanity throughout the ages and continue to trouble us. The studies here examine evil in Asian thought, in Western theory, in the cosmic order, in human psychology, and in social practice. Insights are added to the philosophical discussions from religion, culture, history, law, technology, and literature.

On the ethics of extending human life: healthy people have a right to carry on livingHumanity has long demonstrated a paradoxical ambivalence concerning the extension of a healthy human lifespan. Modest health extension has been universally sought, whereas extreme health extension has been regarded as a snare and delusion—a dream beyond all others at first blush, but actually something we are better off without. The prevailing pace of biotechnological progress is bringing ever closer the day when humanity will be able (...) to act on the latter view by rejecting a clear and present opportunity for much longer healthy lives. Indeed, some biogerontologists contend that that day has already arrived, to the extent that our hesitation in embarking on a vigorous “war on ageing” is already delaying the point at which a cure for ageing will be developed. Here I consider whether our present caution concerning the wisdom of truly curing ageing is likely to survive the increased scrutiny that it will receive in coming years as a result of these technical advances. I conclude that it will not, because of its irreconcilability with values that are more deeply held by the large majority of humanity than any values that argue against the quest for a cure. I further conclude that all the major current reasons given for not curing ageing are mere crutches to help us cope with the immutability of ageing that we have been brought up to accept. Our failure to set aside such irrationality is already shortening potential longevity—quite probably of those already alive today—to a staggering degree. Once we realise this, our determination to consign human ageing to history will be second …. (shrink)

Since approval of the EU General Data Protection Regulation (GDPR) in 2016, it has been widely and repeatedly claimed that the GDPR will legally mandate a ‘right to explanation’ of all decisions made by automated or artificially intelligent algorithmic systems. This right to explanation is viewed as an ideal mechanism to enhance the accountability and transparency of automated decision-making. However, there are several reasons to doubt both the legal existence and the feasibility of such a right. In contrast to the (...) right to explanation of specific automated decisions claimed elsewhere, the GDPR only mandates that data subjects receive meaningful, but properly limited, information (Articles 13-15) about the logic involved, as well as the significance and the envisaged consequences of automated decision-making systems, what we term a ‘right to be informed’. Further, the ambiguity and limited scope of the ‘right not to be subject to automated decision-making’ contained in Article 22 (from which the alleged ‘right to explanation’ stems) raises questions over the protection actually afforded to data subjects. These problems show that the GDPR lacks precise language as well as explicit and well-defined rights and safeguards against automated decision-making, and therefore runs the risk of being toothless. We propose a number of legislative and policy steps that, if taken, may improve the transparency and accountability of automated decision-making when the GDPR comes into force in 2018. (shrink)

To create fair and accountable AI and robotics, we need precise regulation and better methods to certify, explain, and audit inscrutable systems.

Biography of the French philosopher, Christian mystic, and social activist Simone Weil (1909-1943). Unrevised and unpublished proofs.

Participants compared the mental capacities of various human and nonhuman characters via online surveys. Factor analysis revealed two dimensions of mind perception, Experience and Agency. The dimensions predicted different moral judgments but were both related to valuing of mind.

Isaiah Berlin was the greatest intellectual historian of the twentieth century. But his work also made an original and important contribution to moral and political philosophy and to liberal theory. In 1921, at the age of eleven, Isaiah Berlin arrived in England from Riga, Latvia. By the time he was thirty he was at the heart of British intellectual life. He has remained its commanding presence ever since, and few would dispute that he was one of Britain's greatest thinkers. His (...) reputation extends worldwide--as a great conversationalist, intellectual historian, and man of letters. He has been called the century's most inspired reader. Yet Berlin's contributions to thought--in particular to moral and political philosophy, and to liberal theory--are little understood, and surprisingly neglected by the academic world. In this book, they are shown to be animated by a single, powerful, subversive idea: value-pluralism which affirms the reality of a deep conflict between ultimate human values that reason cannot resolve. Though bracingly clear-headed, humane and realist, Berlin's value-pluralism runs against the dominant Western traditions, secular and religious, which avow an ultimate harmony of values. It supports a highly distinctive restatement of liberalism in Berlin's work--an agnostic liberalism, which is founded not on rational choice but on the radical choices we make when faced with intractable dilemmas. It is this new statement of liberalism, the central subject of John Gray's lively and lucid book, which gives the liberal intellectual tradition a new lease on life, a new source of life, and which comprises Berlin's central and enduring legacy. In a new introduction, Gray argues that, in a world in which human freedom has spread more slowly than democracy, Berlin's account of liberty and basic decency is more instructive and useful than ever. (shrink)

The world is complex, but acknowledging its complexity requires an appreciation for the many roles context plays in shaping natural phenomena. In _Unsimple Truths, _Sandra Mitchell argues that the long-standing scientific and philosophical deference to reductive explanations founded on simple universal laws, linear causal models, and predict-and-act strategies fails to accommodate the kinds of knowledge that many contemporary sciences are providing about the world. She advocates, instead, for a new understanding that represents the rich, variegated, interdependent fabric of many levels (...) and kinds of explanation that are integrated with one another to ground effective prediction and action. Mitchell draws from diverse fields including psychiatry, social insect biology, and studies of climate change to defend “integrative pluralism”—a theory of scientific practices that makes sense of how many natural and social sciences represent the multi-level, multi-component, dynamic structures they study. She explains how we must, in light of the now-acknowledged complexity and contingency of biological and social systems, revise how we conceptualize the world, how we investigate the world, and how we act in the world. Ultimately _Unsimple Truths _argues that the very idea of what should count as legitimate science itself should change. (shrink)

This book shows that Hauriou's positivist and pragmatic jurisprudence and social theory, as well as their application to the study of institutions, is satisfactorily supported by his idealistic philosophy. The nine chapters first locate Hauriou's influences, then situate his disciplinary methodologies within methodology in general. The central chapters concern each of the three methodologies in turn.

The importance of the Tree of Life when looked at from its negative side will give the reader new perspective of the spiritual path. Ignorance of universal law can mean that when you think you are doing "good", you may actually be doing "evil". Consciousness is the key. This is an important book for students on any path.

A great philosopher will change the way you think about your life. For most of human history, religion provided a clear explanation of life and death. But in the late 19th and early 20th centuries new ideas -- from psychiatry to evolution to Communist -- seemed to suggest that our fate was now in our own hands. We would ourselves become God. This is the theme of a remarkable new book by one of the world's greatest lving philosophers. It is (...) a brilliant and frightening look at the problems and opportunities of a world coming to grips with humankind's now solitary, unaided place in the universe. Gray takes two major examples: the belief that the science-backed Communism of the new USSR could reshape the planet, and the belief among a group of Edwardian intellectuals -- popularized through mediums and automatic writing -- that there was a non-religious form of life after death. Gray presents an extraordinary cast of philosophers, journalists, politicians, charlatans and mass murderers, all of whom felt driven by a specifically scientific and modern world view. He raises a host of fascinating questions about what it means to be human. The implications of Gray's book will haunt its readers for the rest of their lives. (shrink)

Sandra Harding here develops further the themes first addressed in her widely influential book, The Science Question in Feminism, and conducts a compelling analysis of feminist theories on the philosophical problem of how we know what we ...

The popularity of ‘food sovereignty’ to cover a range of positions, interventions, and struggles within the food system is testament, above all, to the term’s adaptability. Food sovereignty is centrally, though not exclusively, about groups of people making their own decisions about the food system—it is a way of talking about a theoretically-informed food systems practice. Since people are different, we should expect decisions about food sovereignty to be different in different contexts, albeit consonant with a core set of principles (...) (including women’s rights, a shared opposition to genetically modified crops, and a demand for agriculture to be removed from current international trade agreements). In this paper we look at the analytical points of friction in applying ideas of food sovereignty within the context of Indigenous struggles in North America. This, we argue, helps to clarify one of the central themes in food sovereignty: that it is a continuation of anti-colonial struggles, even in post-colonial contexts. Such an examination has dividends both for scholars of food sovereignty and for those of Indigenous politics: by helping to problematize notions of food sovereignty and postcoloniality, but also by posing pointed questions around gender for Indigenous struggles. (shrink)

This fine collection of essays by a leading philosopher of science presents a defence of integrative pluralism as the best description for the complexity of scientific inquiry today. The tendency of some scientists to unify science by reducing all theories to a few fundamental laws of the most basic particles that populate our universe is ill-suited to the biological sciences, which study multi-component, multi-level, evolved complex systems. This integrative pluralism is the most efficient way to understand the different and complex (...) processes - historical and interactive - that generate biological phenomena. This book will be of interest to students and professionals in the philosophy of science. (shrink)

: Feminist standpoint theory remains highly controversial: it is widely advocated, used to guide research and justify its results, and yet is also vigorously denounced. This essay argues that three such sites of controversy reveal the value of engaging with standpoint theory as a way of reflecting on and debating some of the most anxiety-producing issues in contemporary Western intellectual and political life. Engaging with standpoint theory enables a socially relevant philosophy of science.

Call an account of names satisfactionalist if it holds that object o is the referent of name a in virtue of o’s satisfaction of a descriptive condition associated with a. Call an account of names minimally descriptivistif it holds that if a competent speaker finds ‘a=b’ to be informative, then she must associate some information with ‘a’ which she does not associate with ‘b’. The rejection of both positions is part of the Kripkean orthodoxy, and is also built into extant (...) versions of the file-picture of reference. In this paper, I argue that the rejection of minimal descriptivism only follows from the rejection of satisfactionalism given certain implausible assumptions about the nature of competence with a proper name. I do this by showing that considerations internal to the file-picture - in particular the idea that competence with a proper name constitutes an ‘epistemically rewarding’ relation to its bearer - motivate an acceptance of minimal descriptivism. (shrink)

Feminist standpoint theory remains highly controversial: it is widely advocated, used to guide research and justify its results, and yet is also vigorously denounced. This essay argues that three such sites of controversy reveal the value of engaging with standpoint theory as a way of reflecting on and debating some of the most anxiety-producing issues in contemporary Western intellectual and political life. Engaging with standpoint theory enables a socially relevant philosophy of science.

Sacred Games, Death, and Renewal in the Ancient Eastern Woodlands Content Type Journal Article Category Review Pages 507-509 DOI 10.1558/jcr.v11i4.507 Authors Sandra Wallace, Artefact Heritage, Po Box 772 Rose Bay, NSW 2029 Journal Journal of Critical Realism Online ISSN 1572-5138 Print ISSN 1476-7430 Journal Volume Volume 11 Journal Issue Volume 11, Number 4 / 2012.

_Liberalisms_, a work first published in 1989, provides a coherent and comprehensive analytical guide to liberal thinking over the past century and considers the dominance of liberal thought in Anglo-American political philosophy over the past 20 years. John Gray assesses the work of all the major liberal political philosophers including J. S. Mill, Herbert Spencer, Karl Popper, F. A Hayek, John Rawls and Robert Nozick, and explores their mutual connections and differences.

The reason of faith -- Thought and language -- Truth -- The Monologion arguments for the existence of God -- The Proslogion argument for the existence of God -- The divine attributes -- Thinking and speaking about God -- Creation and the word -- The Trinity -- Modality -- Freedom -- Morality -- Incarnation and atonement -- Original sin, grace, and salvation.

Drawing on everyday telephone and video interactions, this book surveys how English speakers use grammar to formulate responses in ordinary conversation. The authors show that speakers build their responses in a variety of ways: the responses can be longer or shorter, repetitive or not, and can be uttered with different intonational 'melodies'. Focusing on four sequence types: responses to questions, responses to informings, responses to assessments, and responses to requests, they argue that an interactional approach holds the key to explaining (...) why some types of utterances in English conversation seem to have something 'missing' and others seem overly wordy. (shrink)

ABSTRACT Recently, children’s books have used augmented reality as a resource, being called 4D books. Augmented reality allows the user to see through the world while interacting in real-time with images produced digitally, resulting in interactivity. The present study aims to introduce the results of a brief reflection on the illustrated book O reino encantado do pôneis 4D under the approach of the semiotics of culture, departing from the notion of semiosis and semiosphere. The semiosphere, drawn by Lotman (1990), in (...) analogy with the biosphere, can help understand the topology of the real and virtual worlds, referred to as the real subsemiosphere and virtual subsemiosphere, located in the interior of the broader semiosphere of the Brazilian culture. In 4D/Augmented reality books, the elements from the virtual subsemiosphere are placed into the real subsemiosphere, crossing their borders. (shrink)

This important new book analyses these core issues and reviews the evidence from both introspection and experiment.

Nous proposons dans ce volume une approche pluridisciplinaire du sens commun. Fruit d'un travail collectif organisé au CURAPP et dans le cadre du programme scientifique ASC, les articles ici présentés, par la diversité de leurs orientations théoriques et disciplinaires, contribuent à faire un état des lieux de la question. L'idée de sens commun est fréquemment utilisée et citée en sociologie, philosophie, linguistique, psychologie, sans qu'il en soit toujours proposé de définition ou d'analyse critique. Elle demandait un travail de définition et (...) de requalification historique et théorique, et de mise en rapport à des corrélats : la norme, le sens moral, le sens social, le sens critique. L'ouvrage vise donc la description, aussi précise que possible des formes et des normes du sens commun en tant qu'elles enveloppent des dimensions cognitives, perceptives, linguistiques, sociales et morales. Il apparaît vite que cette notion résiste à la simple analyse et que seule la superposition de différents points de vue permet d'en percevoir quelques contours. On ne sera pas étonné de la diversité des figures convoquées et de la variété des objets à partir desquels elle est manifestée et interprétée. L'intérêt du sens commun comme objet d'investigation philosophique est alors d'apparaître comme ce qui permet de reprendre de manière oblique certains questionnements classiques qu'il déplace. Ainsi de la question topique des formes affectives, linguistiques et sociales d'expression du sentiment, de l'ancrage de la moralité dans une nature humaine et dans une sensibilité partagée ou encore de la manière dont le sens commun permet de réinterpréter, dans l'histoire des sciences sociales, la question des liens entre action et critique. (shrink)

This book offers a detailed study of the political philosophies of Thomas Hobbes and Benedict de Spinoza, focussing on their concept of power as potentia, concrete power, rather than power as potestas, authorised power. The focus on power as potentia generates a new conception of popular power. Radical democrats–whether drawing on Hobbes's 'sleeping sovereign' or on Spinoza's 'multitude'–understand popular power as something that transcends ordinary institutional politics, as for instance popular plebsites or mass movements. However, the book argues that these (...) understandings reflect a residual scholasticism which Hobbes and Spinoza ultimately repudiate. Instead, on the book's revisionist conception, a political phenomenon should be said to express popular power when it is both popular (it eliminates oligarchy and encompasses the whole polity), and also powerful (it robustly determines political and social outcomes). Two possible institutional forms that this popular power might take are distinguished: Hobbesian repressive egalitarianism, or Spinozist civic strengthening. But despite divergent institutional proposals, the book argues that both Hobbes and Spinoza share the conviction that there is nothing spontaneously egalitarian or good about human collective existence. From this point of view, the book accuses radical democrats of pernicious romanticism; the slow, meticulous work of organizational design and maintenance is the true centre of popular power. Three minute video summary available via HPBin3. Extended discussion on The Political Theory Review podcast. First chapter open access available via Oxford Scholarship Online. Videos of book talks at National University of Singapore (Centre for Legal Theory) and Universidad de Buenos Aires (Instituto de Investigaciones Gino Germani) available via YouTube. (See links below.). (shrink)

Current debates about “Darwinizing culture” have typically focused on the validity of memetics. In this article we argue that meme-like inheritance is not a necessary requirement for descent with modification. We suggest that an alternative and more productive way of Darwinizing culture can be found in the application of phylogenetic methods. We review recent work on cultural phylogenetics and outline six fundamental questions that can be answered using the power and precision of quantitative phylogenetic methods. However, cultural evolution, like biological (...) evolution, is often far from treelike. We discuss the problems reticulate evolution can cause for phylogenetic analyses and suggest ways in which these problems can be overcome. Our solutions involve a combination of new methods for the study of cultural evolution , and the triangulation of different lines of historical evidence. Throughout we emphasize that most debates about cultural phylogenies can only be settled by empirical research rather than armchair speculation. (shrink)

Archaeological theory -- Philosophy and archaeology -- Critical realism as critique of Western philosophy -- Critical realism as philosophical underlabourer -- Diversity and impasse in current archaeological theorising -- The contradictions of archaeological theory -- The material in archaeological theory -- Critical realism, the material, and absence -- Time, scale, and the ontology of the material -- Conclusions, implications, and further research.

By the start of the twenty-first century, the notion of ‘the sublime’ had come to seem incoherent. In the last ten years or so considerable light has been shed by empirical psychologists on a related notion of ‘awe’, and a fruitful dialogue between aestheticians and empirical psychologists has ensued. It is the aim of this paper to synthesize these advances and to offer what I call a ‘two-tiered’ theory of the sublime that shows it to be a coherent aesthetic category. (...) On this theory, sublime experiences begin in an ‘awe response’ (the ‘thin sublime’) and might, with the additional element of temporally-extended reflection, turn into a ‘thick sublime’ response. Building on accounts of the sublime as a species of ‘aesthetic awe’ (Clewis, 2019a and 2019b; Arcangeli, et al., 2020) I aim to show that this two-tiered theory helps to explain why sublime experiences seem to have a basic, primordial core, but also seem to be historically and culturally quite variable (as Nicolson, 1963 [1959]; Battersby, 2007; and McMahon, 2017 have stressed). On this model, the cultural and historical variability comes in largely at the point of the temporally-extended reflection characteristic of the thick sublime, due to the cognitive stock that the subject brings to the encounter. Thus, sublime experiences really lend themselves to being interpreted quite variously by the subject (as well as by the theorist) of these experiences, as, for example, affording insight into the Divine, our moral vocation, or our metaphysical unity with the entire universe, among other lofty thoughts. (shrink)

This book articulates and defends an interpretation of Schopenhauer's ethics as an original and credible contribution to the history of ethics. It presents Schopenhauer's ethics of compassion in direct tension with his resignationism and aims to show surprising continuities with Kant's ethics.

The present study examined whether a dissociation among formats for rational numbers can be obtained in tasks that require comparing a number to a non-symbolic quantity. In Experiment 1, college students saw a discrete or else continuous image followed by a rational number, and had to decide which was numerically larger. In Experiment 2, participants saw the same displays but had to make a judgment about the type of ratio represented by the number. The magnitude task was performed more quickly (...) using decimals, whereas the relation task was performed more accurately with fractions. The pattern observed for percentages was very similar to that for decimals. A dissociation between magnitude comparison and relational processing with rational numbers can be obtained when a symbolic number must be compared to a non-symbolic display. (shrink)