SummaryIntense, sustained nursing lengthens inter-birth intervals and is causally linked with low natural fertility. However, in traditional settings, the effects of such nursing on fertility are difficult to disentangle from those of nutrition. Results from an prospective, direct observational study of reproductive function in well-nourished Amele women who nurse intensively and persistently but who also have high fertility are here presented. Endocrine measures show that ovarian activity resumes by median 11·0 months postpartum. Median duration of postpartum amenorrhoea is 11·3 months, (...) time to next conception is 19·0 months, and the inter-birth interval is 28·0 months. Average life time fertility is 6·8. High fertility in Amele women is due both to refractoriness of reproductive function to suckling stimuli, and to maintenance of equivalent age-specific fertility rates across the reproductive life span. (shrink)

We routinely need to process the identity of many faces around us, and how the brain achieves this is still the subject of much research in cognitive neuroscience. To date, insights on face identity processing have come from both healthy and clinical populations. However, in order to directly compare results across and within participant groups, and across different studies, it is crucial that a standard task is utilised which includes different exemplars (for example, non-face stimuli along with faces), is memory-neutral, (...) and taps into identity recognition across orientation and across viewpoint change. The goal of this study was to test a previously behaviourally tested, optimised face and object identity matching design in a healthy control sample whilst being scanned using fMRI. Specifically, we investigated categorical, orientation, and category-specific orientation effects while participants were focused on identity processing of simultaneously presented exemplar stimuli. Alongside observing category and orientation specific effects in a distributed set of brain regions, we also saw an interaction between stimulus category and orientation in the bilateral fusiform gyrus and bilateral middle occipital gyrus. Generally these clusters showed the pattern of a heightened response to inverted, as opposed to upright faces; and to upright, as opposed to inverted shoes. These results are discussed in relation to previous studies and to potential future research within prosopagnosic individuals. (shrink)

There are many ways to assess face perception skills. In this study, we describe a novel task battery FEAST (Facial Expression Action Stimulus Test) developed to test recognition of identity and expressions of human faces as well as stimulus control categories. The FEAST consists of a neutral and emotional face memory task, a face and object identity matching task, a face and house part-to-whole matching task, and a human and animal facial expression matching task. The identity and part-to-whole matching tasks (...) contain both upright and inverted conditions. The results provide reference data of a healthy sample of controls in two age groups for future users of the FEAST. (shrink)

van der Velde & de Kamps argue for the importance of considering the binding problem in accounts of human mental representation. However, their proposed solution fails as a complete account because it represents the bindings between roles and their fillers through associations (or connections). In addition, many criticisms leveled by the authors towards synchrony-based bindings models do not hold.

Trope theory is a leading metaphysical theory in analytic ontology. One of its classic statements is found in the work of Donald C. Williams who argued that tropes qua abstract particulars are the very alphabet of being. The concept of an abstract particular has been repeatedly attacked in the literature. Opponents and proponents of trope theory alike have levelled their criticisms at the abstractness of tropes and the associated act of abstraction. In this paper I defend the concept of a (...) trope qua abstract particular by rejecting arguments that purport to show that tropes should not be understood as abstract and by arguing that the abstractness of tropes plays an indispensable role in one of our more promising trope-theoretic analyses of universals and of concrete objects. (shrink)

The concept of instantiation is realized differently across a variety of metaphysical theories. A certain realization of the concept in a given theory depends on what roles are specified and associated with the concept and its corresponding term as well as what entities are suited to fill those roles. In this paper, the classic realization of the concept of instantiation in a one-category ontology of abstract particulars or tropes is articulated in a novel way and defended against unaddressed objections.

Het Leids-Haags Allegorieënlexicon toont nieuwe perspectieven op de maatschappelijke werkelijkheid met een actuele duiding van vijftig kernthema’s uit de wetenschap. De auteurs zijn de duale promovendi en hun promotores van Leiden University Dual PhD Centre The Hague. Ze worden daarbij geïnspireerd door de metafoor van de grot van Plato: Waar ben ik? Waar sta ik? Welk beeld zie ik? Hoe kan ik dat begrijpen? Er ontstaan beeldende voorstellingen van begrippen waarin op zoek wordt gegaan naar de centrale gedachten die ten (...) grondslag liggen aan die begrippen. Zo wordt de veranderende wereld waargenomen met het besef dat we nooit kunnen weten of we de gehele werkelijkheid kunnen zien of begrijpen. De waarneming is afhankelijk van de zichtpositie die de waarnemer inneemt. Zo ontstaan verbeeldingen van waarnemingen van ons menselijk bestaan. Zoals: assimilatie, creativiteit, gender, kunstenaarschap, magistraat, participatie, regels, tragedie en verzorgingsstaat. Eerst wordt actuele literatuur besproken. Daarna volgt discussie. Tenslotte neemt de auteur positie in. Met bijdragen van promotores Wilfried Admiraal, Ingrid van Biezen, Hans Borgman, Paul Cliteur, Jaap van den Herik, Rikki Holtmaat, Willem Otterspeer, Jos Raadschelders, Robert Tijssen, Wim Willems en promovendi. (shrink)

Was die Frage nach der Funktion der Sprache im Erkenntnisprozeß betrifft, haben wir zuerst die verschiedenen Theorien dargestellt. Nach einer Reihe alleinstehender Personen wie Derbolav, Bühler, Jost, Glinz behandeln wir die Strömungen der symbolischen Logik und der linguistic analysis. Die symbolische Logik will das Denken in einer logischen Modellsprache analysieren. Die linguistic Analysis betrachtet die gewöhnliche Umgangssprache als Trägerin des Denkens und will, daß alle Philosophen und Wissenschaftler sich in dieser gewöhnlichen Umgangssprache ausdrücken, die bei guter Analyse für jeden intelligenten (...) Menschen verständlich ist. Die Strömungen der Phänomenologie und des Existentialismus äußern die Erfahrung, daß der Mensch seine Existenz ganz in einer sprechenden Welt erfährt und daß sich seine Existenz in der Sprache vollzieht : die Sprache ist das Haus seines Daseins. Keine Sache kann in unserem Bewußtsein zur Existenz gelangen, wenn wir sie nicht zu Wort bringen können. Die Ethnolinguisten und Psycholinguisten sind zu dem Ergebnis gekommen, daß die Formen, in denen ein Mensch jeweils denkt, von den unerbittlichen und unentrinnbaren Strukturen der Wörter mit ihren Bedeutungen und den Strukturen der Wortkombinationen kontrolliert werden. Diese Strukturen sind die Strukturen der jeweiligen Muttersprache. Das Denken eines Menschen vollzieht sich in seiner Sprache. Die Strukturen der Sprache liefern die Modelle für das Denken, für die Analyse der Eindrücke. Unser ganzes Denken bewegt sich in einer denkerisch-sprachigen Welt. Jedes Denken muß sich in Sprachstrukturen kanalisieren lassen. Die Sprache ist das formgebende Organ des Denkens. Die Denkanalyse vollzieht sich in Sprache. In einem bestimmten Augenblick der Entwicklung des Kindes begegnen sich Sprache und Denken ; dann wird das Denken „sprachig” und das Sprechen „denkerisch”. Von nun an werden die meisten Reize der physischen Welt durch ein sprachiges zweites Reizsystem gefiltert ; die Reize werden „in Sprache übersetzt”. Dieser Sprachfilter ist auch in der Analyse nach der dynamischen Erfassung der Reize vorhanden. Diese Daten aus den Theorien der Linguistic Analysis, der Phänomenologie, des Existentialismus, der Ethnolinguistik und Psycholinguistik kann man in direkte Verbindung bringen mit der neoklassischien Theorie, die über ein Erfassen von Erkenntnis-Daten in einer Intuition spricht, die implizit die Möglichkeit zu einem Explizitieren und Analysieren enthält. Somit kommen wir zu folgendem Schema : Reize, sprachiger Empfangsapparat ↓ Erfassung der Reize, Konzeption, Sicht ↓ Denk-Sprachanalyse ↓ Die phonische Äußerung der Denk-Sprachanalyse. Zum Schluß geben wir noch ein Beispiel für eine Kons ta tierungs-Sicht, Ihre Denk-Sprachanalyse und die phonische Äußerung ihrer Denk-Sparchanalyse. (shrink)

We inhabit a world in which the market is a dominant institutional form of social organization. This influence is not without its critics, and there is considerable debate amongst political philosophers and policy-makers about whether the range of the market should expand or contract and, further, about the extent to which the market should be subject to constraints and government regulation. The expansion of the market into realms hitherto unknown is the theme of a number of recent books, including Michael (...) Sandel's What Money Can't Buy and Debra Satz's Why Some Things Should Not Be for Sale, which build on earlier work by, amongst others, Elizabeth Anderson, Margaret Jane Radin, and Michael Walzer. (shrink)

A number of recent papers have described the successful derivation of egg and sperm precursor cells from mouse embryonic stem cells—so-called “artificial” gametes. Although many scientific questions remain, this research suggests numerous new possibilities for stem cell research and assisted reproductive technology, if a similar breakthrough is achieved with human embryonic stem cells. The novel opportunities raised by artificial gametes also prompt new ethical questions, such as whether same-sex couples should be able to access this technology to have children who (...) are genetically related to them both.THE CREATION OF “ARTIFICIAL” GAMETESOver the past two years, a number of papers have been published detailing the first successful attempts at differentiating mouse embryonic stem cells into egg1 and sperm2 precursor cells. Previously, researchers had used embryonic stem cells to generate tissues such as brain, liver, and pancreatic cells, but not germ cells of any kind. Production of gamete precursor cells was achieved initially through allowing stem cell lines to differentiate more or less randomly, but recent research has focused on identifying the precise ways in which differentiation into gametes can be precipitated and controlled. These breakthroughs make it seem likely that ongoing research on human stem cells will yield similar possibilities,3 raising questions over the practicalities of what might be achieved with such “artificial” gametes. In turn, the novel opportunities presented by artificial gametes raise a number of ethical concerns.The initial breakthrough, namely the obtaining of egg cells from mouse stem cells, was achieved by means of relatively simple science. Rather than coaxing stem cells to develop into eggs using complicated cocktails of growth factors, researchers adopted standard cell culture conditions, but grew the cells at higher density than usual.3–6 Growing the cells in this way led to the formation of ovary-like cell aggregates, which (when separated and stimulated with …. (shrink)

Was die Frage nach der Funktion der Sprache im Erkenntnisprozeß betrifft, haben wir zuerst die verschiedenen Theorien dargestellt. Nach einer Reihe alleinstehender Personen wie Derbolav, Bühler, Jost, Glinz behandeln wir die Strömungen der symbolischen Logik und der linguistic analysis. Die symbolische Logik will das Denken in einer logischen Modellsprache analysieren. Die linguistic Analysis betrachtet die gewöhnliche Umgangssprache als Trägerin des Denkens und will, daß alle Philosophen und Wissenschaftler sich in dieser gewöhnlichen Umgangssprache ausdrücken, die bei guter Analyse für jeden intelligenten (...) Menschen verständlich ist. Die Strömungen der Phänomenologie und des Existentialismus äußern die Erfahrung, daß der Mensch seine Existenz ganz in einer sprechenden Welt erfährt und daß sich seine Existenz in der Sprache vollzieht : die Sprache ist das Haus seines Daseins. Keine Sache kann in unserem Bewußtsein zur Existenz gelangen, wenn wir sie nicht zu Wort bringen können. Die Ethnolinguisten und Psycholinguisten sind zu dem Ergebnis gekommen, daß die Formen, in denen ein Mensch jeweils denkt, von den unerbittlichen und unentrinnbaren Strukturen der Wörter mit ihren Bedeutungen und den Strukturen der Wortkombinationen kontrolliert werden. Diese Strukturen sind die Strukturen der jeweiligen Muttersprache. Das Denken eines Menschen vollzieht sich in seiner Sprache. Die Strukturen der Sprache liefern die Modelle für das Denken, für die Analyse der Eindrücke. Unser ganzes Denken bewegt sich in einer denkerisch-sprachigen Welt. Jedes Denken muß sich in Sprachstrukturen kanalisieren lassen. Die Sprache ist das formgebende Organ des Denkens. Die Denkanalyse vollzieht sich in Sprache. In einem bestimmten Augenblick der Entwicklung des Kindes begegnen sich Sprache und Denken ; dann wird das Denken „sprachig” und das Sprechen „denkerisch”. Von nun an werden die meisten Reize der physischen Welt durch ein sprachiges zweites Reizsystem gefiltert ; die Reize werden „in Sprache übersetzt”. Dieser Sprachfilter ist auch in der Analyse nach der dynamischen Erfassung der Reize vorhanden. Diese Daten aus den Theorien der Linguistic Analysis, der Phänomenologie, des Existentialismus, der Ethnolinguistik und Psycholinguistik kann man in direkte Verbindung bringen mit der neoklassischien Theorie, die über ein Erfassen von Erkenntnis-Daten in einer Intuition spricht, die implizit die Möglichkeit zu einem Explizitieren und Analysieren enthält. Somit kommen wir zu folgendem Schema : Reize, sprachiger Empfangsapparat ↓ Erfassung der Reize, Konzeption, Sicht ↓ Denk-Sprachanalyse ↓ Die phonische Äußerung der Denk-Sprachanalyse. Zum Schluß geben wir noch ein Beispiel für eine Kons ta tierungs-Sicht, Ihre Denk-Sprachanalyse und die phonische Äußerung ihrer Denk-Sparchanalyse. (shrink)

Ethical youth work is ‘good' youth work but how do youth work practitioners collectively determine what is ‘good'? This article presents findings from four-country surveys of youth workers' attitudes and understandings of what constitutes ‘good', that is to say ‘ethical’ practice. The article presents the principles that youth workers say underpin ethical practice in Australia, Estonia, Iceland, and Ireland. The first three countries have well established Codes of Ethics and/or Practice and Professional Associations, while Ireland does not. A survey of (...) youth work practitioners funded by Erasmus Plus, was conducted across the four countries (n = 405). A comparative analysis of data across countries revealed consensus around key characteristics of youth work practice such as the participation, empowerment, and safety of young people. These core principles form the basis of good and ethical action by practitioners. In countries which have codified these principles, these Codes were reported to be useful tools to support practitioners in their work. The survey further suggests that reflective practice is important in the application of ethical codes to concrete practice situations acting as a form of collective accountability and praxis. To conclude, we consider the implications of these findings for professionalism, and professionalisation in youth work nationally and internationally. (shrink)

Spinoza’s Ethics must contain some of philosophy’s most baffling statements. All things are animate; the order and connection of ideas is the same as the order and connection of things: what would I be committed to in agreeing with these doctrines? His austere mode of exposition, sparing of illustrations and discursive explanations, ensures that any answer must be highly speculative.His weakness for dark sayings seems to have communicated itself to some of his best-known commentators. Of course where a philosopher’s thought (...) is itself opaque one would be unreasonable to expect lucidity in a commentator’s exposition of it. However he has been described as holding puzzling, to my mind unintelligible opinions on subjects concerning which, as far as I can see, his own statements more naturally suggest a much clearer and more comprehensible interpretation. There are problems enough in understanding his thought without adding needlessly to the list. I think there has been such an addition in discussion of his doctrines about the causal relationship between God and finite creatures, and this paper is devoted to suggesting another account of his thought on that topic which combines, I think, the advantages of being more intelligible and a more natural construction to place on his own statements, than the set of opinions generally laid at his door. (shrink)

Betrachtet man den Gebrauch der Worte ‘Moral’ und ‘Vernunft’ etwas genauer, so stellt man fest, dass nicht klar ist, was sie bezeichnen bzw. wie Moral und Vernunft zusammenhängen. In dem Buch ‘Rationalität in der Angewandten Ethik’, in dem sich verschiedene Autoren die Aufgabe gestellt haben, diese Umstände in das Licht der Betrachtung zu rücken, finden wir Fragen darüber, wie “Moral”, “Angewandte Ethik” und “Vernunft” (auch in der Anwendung) zu verstehen und zu vereinen sind.

C. A. J. Littlewood approaches Seneca's tragedies as Neronian literature rather than as reworkings of Attic drama, and emphasizes their place in the Roman world and in the Latin literary corpus. The Greek tragic myths are for Seneca mediated by non-dramatic Augustan literature. In literary terms Phaedra's desire, Hippolytus' innocence, and Hercules' ambivalent heroism look back through allusion to Roman elegy, pastoral, and epic respectively. Ethically, the artificiality of Senecan tragedy, the consciousness that its own dramatic worlds, events, and people (...) are literary constructs, responds to the contemporary Stoical dismissal of the public world as mere theatre. (shrink)

This is a surprisingly good book. Published by Longmans in Great Britain as part of a series on "Education Today," it provides a very lucid and cogent first glimpse at the discipline of the philosophy of religion. The author's perspective is derivative of the analytic school, but what makes the book so valuable is that Goodall relates linguistic distinctions to Biblical categories. The author makes it obvious that he is a believer and authenticates the conviction that one can be a (...) believer and still sound like Flew or Ryle. The influence of Ian T. Ramsey comes through loud and clear. Goodall presents his proofs for the validity of religious statements with clarity and vigor. Worth the price of the book alone is Goodall's discussion of Lear's "The pobble who had no toes."--W. A. J. (shrink)