Recently at least two papers1,2have appeared that look at cancer from an evolutionary perspective. That cancer has a negative effect on fitness needs no argument. However, cancer origination is not an isolated process, but the potential for it is linked in diverse ways to other genetically determined developmental events, complicating the way selection acts on it, and through it on the evolution of development. The two papers take a totally different line. Kavanagh argues that anti‐cancer selection has led to developmental (...) constraints. Leroi et al. argue that cancer is a side‐effect of recent evolutionary changes that usually will disappear over time through anti‐cancer selection. Here we place the papers in a wider perspective, and in so doing discuss various alternative developmental links cancer may have together with their evolutionary implications. BioEssays 25:1035–1039, 2003. © 2003 Wiley Periodicals, Inc. (shrink)

In this paper we describe a test for Nijhout's hypothesis that the eyespot patterns on butterfly wings are the result of a threshold reaction of the epidermal cells to a concentration gradient of a diffusing degradable morphogen produced by focal cells at the centre of the future eyespot. The wings of the nymphalid butterfly, Bicyclus anynana, have a series of eyespots, each composed of a white pupil, a black disc and a gold outer ring. In earlier extirpation and transplantation experiments (...) it has been established that these eyespots are indeed organised around groups of signalling cells active during the first hours of pupal development. If these cells were to supply the positional information for eyespot formation in accordance with Nijhout's diffusion-degradation gradient model, then, when two foci are close together, the signals should sum, and this effect should be apparent in the detailed shape of the resulting pigment pattern. We give an equation for the form of the contours that would be obtained in this manner. We use this to test the morphogen gradient hypothesis on measurements of the outlines of fused eyespots obtained either by grafting focal cells close together, or by using a mutation that produces adjacent fused eyespots. The contours of the fused patterns were found to satisfy our equation, thus corroborating Nijhout's hypothesis to the extent possible with this particular type of experiment. (shrink)

Kendall's (1956) approach to the general epidemic is generalized by dropping the assumptions of constant infectivity and random recovery or death of ill individuals. A great deal of attention is paid to the biological background and the heuristics of the model formulation. Some new results are: (l) the derivation of Kermack's and McKendrick's integral equation from what seems to be the most general set of assumptions in section 2.2, (2) the use of Kermack's and McKendrick's final value equation to arrive (...) at a finite time version of the threshold theorem for the general case, comparable to that for the case of only one Markovian state of illness in section 2.5, (3) the analysis of the behaviour of the solutions of the integral equation when the starting infection approaches zero in section 2.7, (4) the derivation of the probability structure of a general branching process, after conditioning on extinction in section 3.6, (5) the statement of the generalized versions of Kendall's ideas in the form of precise limit conjectures in section 4, (6) the derivation of a closed expression for the limit epidemic resulting from (3) in appendix 4. (shrink)

A model for the trapping of animals with a circular pitfall is formulated. The model's assumptions are: The animals move independently according to the same Brownian motions. The boundary of the pitfall acts as an absorbing or elastic barrier. Initially a fixed number of animals is independently homogeneously distributed over a finite study area, or the initial positions follow a homogeneous planar Poisson process. The model depends on three free parameters: the motility of the animals, their reaction to the pitfall, (...) the initial density.It appears that the catches in disjoint time intervals are multinomially or independently Poisson distributed. The parameters of these distributions are obtained by solving certain partial differential equations. (shrink)

For more than two decades euthanasia and assisted suicide have been openly debated in the Netherlands. This development started in 1973 when the Regional Court in Leeuwarden decided a case in which a physician had administered a deadly dose of morphine to her terminally ill mother on the mother's serious and persistent request. In this case the court concluded that the average Dutch physician no longer considered it his or her duty to prolong a patient's life under all circumstances. The (...) court accepted that in specific cases a physician is allowed to prevent serious and irreversible suffering, even if the patient's life is short ened. This case was the first in which a legal opening for euthanasia or assisted suicide was created. In this specific case the physician was formally declared guilty, but the court gave her a suspended sentence of one week imprisonment. This decision started a debate on euthanasia and assisted suicide throughout all levels of Dutch society. (shrink)

Background: Legislation on physician-assisted suicide is being considered in a number of states since the passage of the Oregon Death With Dignity Act in 1994. Opinion assessment surveys have historically assessed particular subsets of physicians.Objective: To determine variables predictive of physicians’ opinions on PAS in a rural state, Vermont, USA.Design: Cross-sectional mailing survey.Participants: 1052 physicians licensed by the state of Vermont.Results: Of the respondents, 38.2% believed PAS should be legalised, 16.0% believed it should be prohibited and 26.0% believed it should (...) not be legislated. 15.7% were undecided. Males were more likely than females to favour legalisation . Physicians who did not care for patients through the end of life were significantly more likely to favour legalisation of PAS than physicians who do care for patients with terminal illness . 30% of the respondents had experienced a request for assistance with suicide.Conclusions: Vermont physicians’ opinions on the legalisation of PAS is sharply polarised. Patient autonomy was a factor strongly associated with opinions in favour of legalisation, whereas the sanctity of the doctor–patient relationship was strongly associated with opinions in favour of not legislating PAS. Those in favour of making PAS illegal overwhelmingly cited moral and ethical beliefs as factors in their opinion. Although opinions on legalisation appear to be based on firmly held beliefs, approximately half of Vermont physicians who responded to the survey agree that there is a need for more education in palliative care and pain management. (shrink)

Semantics of Detachment A Review of Burkhard Hasebrink, Susanne Bernhardt, and Imke Früh, eds., Semantik der Gelassenheit: Generierung, Etablierung, Transformation [Semantics of detachment: Formation, establishment, transformation] Silke Schwandt Beyond the Untranslatability of Concepts A Review of Martin J. Burke and Melvin Richter, eds., Why Concepts Matter: Translating Social and Political Thought László Kontler Emotional Modernities A Review of Ute Frevert, Monique Scheer, Anne Schmidt, Pascal Eitler, Bettina Hitzer, Nina Verheyen, Benno Gammerl, Christian Bailey, and Margrit Pernau, Gefühlswissen: Eine lexikalische Spurensuche (...) in der Moderne [Emotional knowledge: In search of lexical clues in modernity] Anu Korhonen Beyond Peace as a Process A Review of Julia Harfensteller, The United Nations and Peace: The Evolution of an Organizational Concept Marie-Christine Boilard Human Rights as Conceptual History A Review of Stefan-Ludwig Hoffmann, ed., Human Rights in the Twentieth Century Johan Strang. (shrink)

ABSTRACT Violence is a central idea for political theory but there is very little agreement about how it should be understood. This paper examines some fashionable approaches to the concept and argues against ‘wide’ definitions, particularly those of the ‘structuralist’ variety of which that offered by the sociologist, Johan Galtung, is taken as typical. A critique is also given of ‘legitimist’ definitions which incorporate some strong notion of illegitimacy into the very meaning of violence. Structuralist definitions are much favoured (...) by the political left whereas legitimist accounts are more common on the right but these connections, though psychologically understandable, are not logically tight. Both structuralist and legitimist analyses are criticised on conceptual and practical grounds and a defence of a more restricted definition is presented. The paper concludes with some remarks about the point of having a concept of violence of the type delineated. (shrink)

Scholars have long been captivated by the parallels between birdsong and human speech and language. In this book, leading scholars draw on the latest research to explore what birdsong can tell us about the biology of human speech and language and the consequences for evolutionary biology. They examine the cognitive and neural similarities between birdsong learning and speech and language acquisition, considering vocal imitation, auditory learning, an early vocalization phase, the structural properties of birdsong and human language, and the striking (...) similarities between the neural organization of learning and vocal production in birdsong and human speech. After outlining the basic issues involved in the study of both language and evolution, the contributors compare birdsong and language in terms of acquisition, recursion, and core structural properties, and then examine the neurobiology of song and speech, genomic factors, and the emergence and evolution of language. Contributors: Hermann Ackermann, Gabriël J.L. Beckers, Robert C. Berwick, Johan J. Bolhuis, Noam Chomsky, Frank Eisner, Martin Everaert, Michale S. Fee, Olga Fehér, Simon E. Fisher, W. Tecumseh Fitch, Jonathan B. Fritz, Sharon M.H. Gobes, Riny Huijbregts, Eric Jarvis, Robert Lachlan, Ann Law, Michael A. Long, Gary F. Marcus, Carolyn McGettigan, Daniel Mietchen, Richard Mooney, Sanne Moorman, Kazuo Okanoya, Christophe Pallier, Irene M. Pepperberg, Jonathan F. Prather, Franck Ramus, Eric Reuland, Constance Scharff, Sophie K. Scott, Neil Smith, Ofer Tchernichovski, Carel ten Cate, Christopher K. Thompson, Frank Wijnen, Moira Yip, Wolfram Ziegler, Willem Zuidema. (shrink)

Corporate citizenship is a prominent international issue as contemporary corporations are no longer expected to perform financially, but are also expected to have an ethical relationship of responsibility between the corporate itself and the society in which it operates and performs it business activities. Provides an up-to-date theoretical content pertaining to corporate citizenship, providing local and global examples and case studies.

Du sommaire: Ambiguite et comprehension du langage (Paul Bogaards, Johan Rooryck). - Why pluralities don't mean a thing (Crit Cremers). - Aspects of interlingual ambiguity: polyglot punning (Dirk Delabastita). - Les feux de Saint-Antoine (Sjef Houppermans). - The semantics of Dutch moeten 'must, should, have to' from a typological and a relevance-theoretical perspective (Theo Janssen). - L'ambiguite en langue et en discours (Catherine Kerbrat-Orecchioni).".

During the last years competition in the textile sector has increased, putting financial returns under considerable pressure. As a result, production has shifted to low wage countries in the third world. This has raised the relevance of ethical procedures. This paper analyses how C&A, as one of the largest Western apparel companies, organises its sourcing ethics, notwithstanding the financial pressure in the market. Based on interviews with Asian suppliers of C&A during the second half of 2000, we review the opinions (...) of external stakeholders about the sourcing ethics of C&A. Finally, we evaluate C&A’s sourcing ethics from a theoretical perspective. (shrink)

Starting from MacIntyre’s virtue ethics, we investigate several codes of conduct of banks to identify the type of virtues that are needed to realize their mission. Based on this analysis, we define three core virtues: honesty, due care, and accuracy. We compare and contrast these codes of conduct with the actual behavior of banks that led to the credit crisis and find that in some cases banks did not behave according to the moral standards they set themselves. However, although banks (...) and the professionals working in them can be blamed for what they did, one should also acknowledge that the institutional context of the free market economy in which they operated made it difficult to live up to the core values lying at the basis of the codes of conduct. Given the neo-liberal free market system, innovative and risky strategies to enhance profits are considered desirable for the sake of shareholder’s interests. A return to the core virtues in the financial sector will therefore only succeed if a renewed sense of responsibility in the sector is supported by institutional changes that allow banks to put their mission into practice. (shrink)

This Handbook documents the main trends in current research between logic and language, including its broader influence in computer science, linguistic theory and cognitive science. The history of the combined study of Logic and Linguistics goes back a long way, at least to the work of the scholastic philosophers in the Middle Ages. At the beginning of this century, the subject was revitalized through the pioneering efforts of Gottlob Frege, Bertrand Russell, and Polish philosophical logicians such as Kazimierz Ajdukiewicz. Around (...) 1970, the landmark achievements of Richard Montague established a junction between state-of-the-art mathematical logic and generative linguistic theory. Over the subsequent decades, this enterprise of Montague Grammar has flourished and diversified into a number of research programs with empirical and theoretical substance. This appears to be the first Handbook to bring logic-language interface to the fore. Both aspects of the interaction between logic and language are demonstrated in the book i.e. firstly, how logical systems are designed and modified in response to linguistic needs and secondly, how mathematical theory arises in this process and how it affects subsequent linguistic theory. The Handbook presents concise, impartial accounts of the topics covered. Where possible, an author and a commentator have cooperated to ensure the proper breadth and technical content of the papers. The Handbook is self-contained, and individual articles are of the highest quality. (shrink)

Starting from MacIntyre’s virtue ethics, we investigate several codes of conduct of banks to identify the type of virtues that are needed to realize their mission. Based on this analysis, we define three core virtues: honesty, due care, and accuracy. We compare and contrast these codes of conduct with the actual behavior of banks that led to the credit crisis and find that in some cases banks did not behave according to the moral standards they set themselves. However, although banks (...) and the professionals working in them can be blamed for what they did, one should also acknowledge that the institutional context of the free market economy in which they operated made it difficult to live up to the core values lying at the basis of the codes of conduct. Given the neo-liberal free market system, innovative and risky strategies to enhance profits are considered desirable for the sake of shareholder’s interests. A return to the core virtues in the financial sector will therefore only succeed if a renewed sense of responsibility in the sector is supported by institutional changes that allow banks to put their mission into practice. (shrink)

During the last years competition in the textile sector has increased, putting financial returns under considerable pressure. As a result, production has shifted to low wage countries in the third world. This has raised the relevance of ethical procedures. This paper analyses how C&A, as one of the largest Western apparel companies, organises its sourcing ethics, notwithstanding the financial pressure in the market. Based on interviews with Asian suppliers of C&A during the second half of 2000, we review the opinions (...) of external stakeholders about the sourcing ethics of C&A. Finally, we evaluate C&A’s sourcing ethics from a theoretical perspective. (shrink)

Due to increasing empiricalinformation on farm animal welfare since the1960s, the prospects for sound decisionmakingconcerning welfare have improved. This paperdescribes a strategy to develop adecision-making aid, a decision support system,for assessment of farm-animal welfare based onavailable scientific knowledge. Such a decisionsupport system allows many factors to be takeninto account. It is to be developed accordingto the Evolutionary Prototyping Method, inwhich an initial prototype is improved inreiterative updating cycles. This initialprototype has been constructed. It useshierarchical representations to analysescientific statements and statements (...) describingthe housing system. Welfare is assessed fromwhat is known about the biological needs of theanimals, using a welfare model in the form of atree that contains these needs as welfarecomponents. Each state of need is assessedusing welfare relevant attributes of thehousing system and weighting factors.Attributes are measurable properties of thehousing system. Weighting factors are assignedaccording to heuristic rules based on theprinciple of weighting all components(attributes and needs) equally, unless thereare strong reasons to do otherwise. Preliminarytests of the prototype indicate that it may bepossible to perform assessment of farm-animalwelfare in an explicit way and based onempirical findings. The procedure needs to berefined, but its prospects are promising. (shrink)

We sought to gain more insight into the effects of attention focus and time constraints on skill learning and performance in novices and experts by means of two complementary experiments using a table tennis paradigm. Experiment 1 showed that skill-focus conditions and slowed ball frequency disrupted the accuracy of experts, but dual-task conditions and speeded ball frequency did not. For novices, only speeded ball frequency disrupted accuracy. In Experiment 2, we extended these findings by instructing novices either explicitly or by (...) analogy . Explicitly instructed novices were less accurate in skill-focused and dual-task conditions than in single-task conditions. Following analogy instruction novices were less accurate in the skill-focused condition, but maintained accuracy under dual-task conditions. Participants in both conditions retained accuracy when ball frequency was slowed, but lost accuracy when ball frequency was speeded, suggesting that not attention, but motor dexterity, was inadequate under high temporal constraints. (shrink)

Quartz & Sejnowski's target article concentrates on the development of a number of neural parameters, especially neuronal processes, in the mammalian brain. Data on learning-related changes in spines and synapses in the developing avian brain are consistent with a constructivist interpretation. The issue of an integration of selectionist and constructivist views is discussed.

Inquiry into language evolution has been controversial, mainly because there is no consensus as to the nature of both ‘evolution’ and ‘language.’ Berwick and Chomsky make sense of the evolution of language by treating it as a biological phenomenon. In contrast to functional characterizations of language as ‘communication’ or ‘speech,’ the authors define it as, essentially, a mind-internal computational mechanism. Within their minimalist approach, hierarchical syntactic structure is achieved through the recursive application of a basic operation called ‘Merge.’ The simplicity (...) of the basic operation is consistent with archeological evidence suggesting an evolutionary recent origin of language. (shrink)

This handbook presents a comprehensive introduction to the core areas of philosophy of education combined with an up-to-date selection of the central themes. It includes 95 newly commissioned articles that focus on and advance key arguments; each essay incorporates essential background material serving to clarify the history and logic of the relevant topic, examining the status quo of the discipline with respect to the topic, and discussing the possible futures of the field. The book provides a state-of-the-art overview of philosophy (...) of education, covering a range of topics: Voices from the present and the past deals with 36 major figures that philosophers of education rely on; Schools of thought addresses 14 stances including Eastern, Indigenous, and African philosophies of education as well as religiously inspired philosophies of education such as Jewish and Islamic; Revisiting enduring educational debates scrutinizes 25 issues heavily debated in the past and the present, for example care and justice, democracy, and the curriculum; New areas and developments addresses 17 emerging issues that have garnered considerable attention like neuroscience, videogames, and radicalization. The collection is relevant for lecturers teaching undergraduate and graduate courses in philosophy of education as well as for colleagues in teacher training. Moreover, it helps junior researchers in philosophy of education to situate the problems they are addressing within the wider field of philosophy of education and offers a valuable update for experienced scholars dealing with issues in the sub-discipline. Combined with different conceptions of the purpose of philosophy, it discusses various aspects, using diverse perspectives to do so. Contributing Editors: Section 1: Voices from the Present and the Past: Nuraan Davids Section 2: Schools of Thought: Christiane Thompson and Joris Vlieghe Section 3: Revisiting Enduring Debates: Ann Chinnery, Naomi Hodgson, and Viktor Johansson Section 4: New Areas and Developments: Kai Horsthemke, Dirk Willem Postma, and Claudia Ruitenberg. (shrink)

"We live in an uncertain world. The politics of the United States affects our lives more often than what is decided in the Hague or Brussels. Many people experience in their daily work a kind of powerlessness when they have to face the consequences of decisions that are taken far away, for example because they work with the daughter company of a multinational. More than ever we are depending on the “global economy”. We are — whether we like it or (...) not — part of a worldwide political and economic entity." This text occurred in a 2002 publication of the Dutch Council of Churches, entitled ‘Economy in the service of life’, and has proved to be prophetic. Because since then, and especially after 2008, the awareness of global dependence and associated impotence has only become stronger. Rarely in history have we observed how quickly economic changes materialize worldwide. (shrink)

''There is no doubt that postgraduate students and researchers in cognitive neuroscience will find this book to be a useful tool and I would not hesitate to recommend it... The relatively short length of the essays and their overview of current research, make them ideal reading material for more advanced researchers... The book therefore serves as an ideal starting place for cognitive psychologists who want to know more about cognitive neuroscience.'' -Applied Cognitive Psychology, 16Cognitive neuroscience has been the most productive, (...) and arguably the most exciting area of growth in psychology and neuroscience over recent years, with remarkable insights into the brain mechanisms of cognitive abilities being gained from studies of both animals and humans. Johan Bolhuis has brought together a stellar list of contributors, including, amongst others, Patrick Bateson, Lawrence Weiskrantz, Robert Hinde, Eric Kandel, Mark Johnson, and James McGaugh to provide a truly authoritative and comprehensive overview of our current knowledge of the essential neural mechanisms of perception, learning, and memory. Written to be accessible to advanced undergraduates, and postgraduates, the book describes the latest advances in the most important fields of cognitive neuroscience. Brain, Perception, Memory will be an invaluable reference work and textbook for advanced students and researchers in cognitive psychology, neuroscience, and animal behaviour. (shrink)

Previous research has demonstrated that trait self-control is related to a range of positive romantic relationship processes, suggesting that trait self-control should be positively and robustly linked to relationship satisfaction in both partners in a romantic relationship. However, the existing empirical evidence is limited and mixed, especially regarding partner effects. With three datasets of heterosexual couples, the present pre-registered studies examined: the dyadic associations between trait self-control and relationship satisfaction both cross-sectionally and longitudinally, and whether these effects hold when controlling (...) for both partners’ relationship commitment. The results indicated a cross-sectional positive actor effect, some support for a positive cross-sectional partner effect, and only little support for a longitudinal actor effect. After controlling for relationship commitment, all effects of trait self-control on satisfaction diminished except for a longitudinal actor effect among women in Study 2. Potential explanations for the current results, and implications for theory and practice, are discussed. (shrink)