Purpose: The paper provides an overview of Ernst von Glasersfeld's life and theory, concentrating on subjects such as the acquisition of knowledge, language and communication, ethical questions, and aspects of teaching and learning. Conclusion: Ernst von Glasersfeld interests cover a wide range of disciplines. Therefore his work is genuinely rooted in interdisciplinarity.

Problem: Mitterer's critique of the central argumentations of radical constructivists has been mostly neglected until today. The paper presents and evaluates his criticism and, in the second part, outlines a format of constructivism that tries to draw appropriate consequences. Solution: In his critique Mitterer explains why the radical constructivism represented above all by Maturana, Varela, von Glasersfeld or Roth still remains in a dualistic format. In his view Neurobiology is used in their writings as the indisputable basis for deriving far-reaching (...) epistemological consequences. Therefore constructivism evades self-application. To overcome this serious critique a different approach to constructivist thinking is sketched that operates without using any biological or psychological theories, tries to avoid dualism, and elaborates Mitterer's basic argument that the description of an object and the object under description are the same. Benefits: The paper shows what constructivism can learn from a serious critique and how it can be rewritten in a non-dualistic way. (shrink)

Background: We aimed to determine the smallest changes in health-related quality of life (HRQoL) scores in the European Organisation for Research and Treatment of Cancer Quality of Life Questionnaire core 30 and the Brain Cancer Module (QLQ-BN20), which could be considered as clinically meaningful in brain cancer patients. Materials and methods: World Health Organisation performance status (PS) and mini-mental state examination (MMSE) were used as clinical anchors appropriate to related subscales to determine the minimal clinically important differences (MCIDs) in HRQoL (...) change scores (range 0-100) in the QLQ-C30 and QLQ-BN20. A threshold of 0.2 standard deviation (SD) (small effect) was used to exclude anchor-based MCID estimates considered too small to inform interpretation. Results: Based on PS, our findings support the following integer estimates of the MCID for improvement and deterioration, respectively: physical (6, 9), role (14, 12), and cognitive functioning (8, 8); global health status (7, 4(star)), fatigue (12, 9), and motor dysfunction (4(star), 5). Anchoring with MMSE, cognitive functioning MCID estimates for improvement and deterioration were (11, 2(star)) and for communication deficit were (9, 7). Estimates with asterisks were <0.2 SD and were excluded from our MCID range of 5-14. Conclusion: These estimates can help clinicians evaluate changes in HRQoL over time, assess the value of a health care intervention and can be useful in determining sample sizes in designing future clinical trials. (shrink)

On the History of Modern Philosophy is a key transitional text in the history of European philosophy. In it, F. W. J. Schelling surveys philosophy from Descartes to German Idealism and shows why the Idealist project is ultimately doomed to failure. The lectures trace the path of philosophy from Descartes through Spinoza, Leibniz, Kant, Fichte, Jacobi, to Hegel and Schelling's own work. The extensive critiques of Hegel prefigure many of the arguments to be found in Feuerbach, Kierkegaard, Marx, Nietzsche, Heidegger, (...) and Derrida. This is the first English translation of On the History of Modern Philosophy. In his introduction Andrew Bowie sets the work in the context of Schelling's career and clarifies its philosophical issues. The translation will be of special interest to philosophers, intellectual historians, literary theorists, and theologians. (shrink)

Problem: An answer to the question of whether or not Radical Constructivism RC can or will become a mainstream endeavour is difficult, because what is called RC is a bundle of quite divergent approaches and not a homogenous (super) theory. Therefore the article concentrates upon “classical” RC as developed first of all by von Glasersfeld, von Foerster and Maturana and Varela. The pros and cons of their approaches are discussed and evaluated. Solution: In order to overcome the most obvious problems (...) of RC, a strict process-oriented kind of argumentation is developed that replaces is/is not assertions with descriptions of processes and their results, thus answering the question of what might reasonably be called “construction.” Benefit: The paper presents a way of rewriting RC, i.e., avoiding its evident problems, without abandoning the insights that RC thinkers have gained in the past. (shrink)

It is shown that the covariance together with the quantum principle speak for an affinely connected structure which, for distances greater than Planck’s length, goes over in a metrically connected structure of space-time.

Hans Urs von Balthasar is one of the most prolific, creative and wide-ranging theologians of the twentieth century who is just now coming to prominence. But because of his own daring speculations about the meaning of Christ's descent into hell after the crucifixion, about the uniqueness of Christ as savior of a pluralistic world, and because he draws so many of his resources for his theology from literature, drama, and philosophy, Balthasar has never been an easily-categorized theologian. He is neither (...) liberal nor conservative, neither Thomist nor modernist and he seems to elude all attempts to capture the exact way he creatively reinterprets the tradition of Christian thought. For that reason, this Companion is singularly welcome bringing together a wide range of theologians both to outline and to assess the work of someone whom history will surely rank someday with Origen, John Calvin, and Karl Barth. (shrink)

This article addresses the ability of Parallel Distributed Processing (PDP) networks to generate stagewise cognitive development in accordance with Piaget's theory of cognitive epigenesis. We carried out a replication study of the simulation experiments by McClelland (1989) and McClelland and Jenkins (1991) in which a PDP network learns to solve balance scale problems. In objective tests motivated from catastrophe theory, a mathematical theory of transitions in epigenetical systems, no evidence for stage transitions in network performance was found. It is concluded (...) that PDP networks lack the ability to recover the positive outcomes of analogous catastrophe analyses of real cognitive developmental data. In an attempt to further characterize the learning behaviour of PDP networks, we carried out a second simulation study using the discrimination‐shift paradigm. The results thus obtained indicate that PDP learning is compatible with the learning of stimulus‐response relationships, not with the acquisition of mediating rules such as conceived in (neo‐)Piagetian theory. In closing, we speculate about the feasibility of simulating stagewise development with alternative network architectures. (shrink)

Context: Ernst von Glasersfeld’s radical constructivism has been very influential in education, particularly in mathematics and science education. Problem: There is limited guidance available for educational researchers who wish to design research that is consistent with constructivist thinking. Von Glasersfeld’s radical constructivism, together with the theoretical perspectives outlined by constructivist educational researchers such as Guba and Lincoln, can be considered as a source of guidance. Method: The paper outlines a constructivist knowledge framework that could be adopted for educational research. The (...) discussion considers how judgement of what counts as knowledge could be made, and how the set of procedures chosen could enable the researcher to represent the findings of the inquiry as knowledge. Results: An argument is made for researchers to explicate the criteria for judging an inquiry. Each criterion can then be linked to the standards to be reached and the techniques for generating data. The joint satisfaction of criteria and techniques for a constructivist inquiry creates conditions that indicate the “trustworthiness” or “authenticity” of an educational research study. Implications: The illustration of how a constructivist inquiry could be judged recognises how the contribution of von Glasersfeld’s radical constructivism can be used to inform the practice of educational research. Constructivist content: The argument presented in the paper links to radical constructivism and suggests ways in which it can be applied in the context of educational research. (shrink)

Joseph Bracken examines key writings of process-oriented philosophers like Alfred North Whitehead along with systems-oriented thinkers such as Ludwig von Bertalanffy to create a systems-oriented understanding of the God-world relation that serves as a complement to Pope Francis’s reflections on the environmental crisis.

Echoing much of the neo-Thomistic revival of the twentieth century, Fides et Ratio §76 sketches the two main characteristics of a Christian philosophy: it is a type of thinking which simultaneously employs yet always seeks to purify reason and, secondly, it does not close itself off to the concerns and content of revelation. In this way, Pope John Paul II calls for a contemporary understanding of faith which is seen as a virtue freeing human reason from presumption, "the typical temptation (...) of the philosopher." In his latest, Bruno Niederbacher likewise calls for such learned docility in both the human soul as well as in the modern Academy. Divided into six main sections, this work concentrates on two main arguments. First, he shows why Thomas held that faith enables assent to what is and thus proves to be a necessary virtue for correct thinking and action and, secondly, what significance such a claim has for us today. (shrink)

Ce travail pose la question des critères de la „progression biologique“ , d'après les documents fossiles, dans le monde des organismes, c'est-à-dire de ce perfectionnement qui ne s'arrête pas à l'intérieur du cadre d'un phylum donné, comme le „perfectionnement de l'adaptation“, mais qui conduit, au-de-là de phylums de rang différent, à des types supérieurs, par exemple, des Poissons pas les Amphibies et les Reptiles jusqu'aux Mammifères ou aux Oiseaux. Deux groupes de critères y sont recensés en détail, leur contenu est (...) exposé, et on les examine pour voir s'ils caractérisent sans ambiguïté la „progression biologique“. Le premier groupe comprend les critères de „différenciation croissante“ et „d'intégration harmonique”. Ils sont fondés sur la différenciation morphophysiologique ou plus exactement sur la „totalité” des organismes, c'est-à-dire leur multiplicité dans l'unité. Le second groupe de critères, à savoir „indépendance croissante du milieu” et „autonomie individuelle croissante”, part des relations de l'organisme au milieu et aux autres formes vivantes et souligne la „subsistence” des individus, c'est-à-dire leur plus ou moins grande indépendence ou leur stabilité interne. Comme „totalité” et „subsistence” sont les éléments décisifs d'une définition biologique de l'individu, on peut dire que la „progression biologique“ d'un organisme est d'autant plus élevée que sa totalité et subsistence et par là son être individuel sont plus accusés.Tous les critères mentionnés ne sont pas uniformes. Les motifs de leur imprécision sont divers. Tout d'abord, il n'y a pas encore de définition unique et complète de l'individu biologique, de sorte qu'on ne peut circonscrire d'une manière univoque ce qui confère à un organisme une individualité plus forte ou moins forte. Ensuite les lignées au-delà desquelles s'accomplissent des perfectionnements, et dont l'une reste intérieur au phylum , tandis que l'autre le transcende , sont entrelacées si intimement et d'une façon si particulière qu'elles ne se laissent pas séparer franchement et décrire rigoureusement selon leurs signes distinctifs. Tout représentant d'un phylum, peu importe son palier, est en effet nécessairement inséré dans un milieu et en quelque façon spécialisé. Il n'existe pas des types à caractères phylétiques purs, qui ne montrent dans aucune direction un „perfectionnement de l'adaptation”, mais seulement des marques caractéristiques de la „progression biologique”. Enfin nous ne connaissons pas les restes fossiles que le développement ou la formation des grands phylums du règne animal, à savoir du rameau des Vertébrés et des divers groupes des Invertébrés, mais non pas le plus intéressant et le plus important, leur „progression biologique” jusqu'au degré d'organisation qu'ils présentent déjà à l'époque du Silurien ou plutôt du Cambrien. C'est cela seulement qui permettrait une vue plus profonde sur la nature de la „progression biologique”.Die Arbeit stellt die Frage nach den Kriterien des fossil belegten Biologischen Aufstiegs” der Organismenwelt, d.h. derjenigen Vervollkommnung, die sich nicht innerhalb des Rahmens eines gegebenen Bauplans hält, wie die „Anpassungsvervollkommnung”, sondern über verschiedenrangige Baupläne hinweg zu höheren Typen führt, z.B. von den Fischen über die Amphibien und Reptilien zu den Säugern bzw. Vögeln. Ausführlich werden zwei Gruppen von Kriterien besprochen, ihr Inhalt dargelegt und ihre Eindeutigkeit zur Charakterisierung des „Biologischen Aufstiegs” untersucht. Die erste Gruppe umfasst die Kriterien der „zunehmenden Differenzierung” und „harmonischeren Integration”. Diese legen die morphologisch-physiologische Differenzierung oder genauer die „Ganzheit” der Organismen zugrunde, d.h. ihre Vielheit in der Einheit. Die zweite Kriteriengruppe, nämlich „zunehmende Umweltunabhängigkeit” und „zunehmende individuelle Autonomie”, geht von den Beziehungen des Organismus zur Umwelt und zu andern Lebensformen aus und betont die „Subsistenz” der Individuen, d.h. ihr grösseres oder geringeres Losgelöstsein oder ihre Selbständigkeit. Da nun „Ganzheit” und „Subsistenz” die entscheidenden Elemente einer biologischen Definition des Individuums sind, lässt sich sagen, dass der „Biologische Aufstieg” eines Organismus um so höher ist, je stärker seine Ganzheit und Subsistenz und damit sein Individuumsein ist.Eindeutigkeit kommt allen genannten Kriterien nicht zu. Die Gründe für ihre Unschärfe sind verschiedener Art. Zunächst gibt es noch keine eindeutige und vollständige Definition des biologischen Individuums, so dass sich nicht eindeutig umreissen lässt, was einem Organismus eine stärkere oder weniger starke Individualität verleiht. Dann sind die Linien, über die sich Vervollkommnungen vollziehen und von denen die eine innerhalb des Bauplans bleibt , die andere aber über ihn hinausführt so innig und in so eigenartiger Weise miteinander verflochten, dass sie sich nicht sauber scheiden und in ihren charakteristischen Merkmalen genau beschreiben lassen. Jeder Vertreter eines Bauplans, ganz gleich von welcher Ranghöhe, ist nämlich notwendig in eine Umwelt eingepasst und irgendwie spezialisiert. Es gibt keine Typen mit reinen Bauplanmerkmalen, die nach keiner Richtung hin eine „Anpassungsvervollkommnung”, sondern nur Merkmale des „Biologischen Aufstiegs” aufweisen. Schliesslich kennen wir fossil nur die Entfaltung oder Ausgestaltung der Grossbaupläne des Tierreichs, nämlich des Wirbeltierstammes und der verschiedenen Gruppen der Wirbellosen, nicht aber das Interessanteste und Wichtigste, nämlich ihren „Biologischen Aufstieg” zu der organisatorischen Höhe, mit der sie sich im Silur bzw. im Kabrium bereits vorstellen. Das erst würde einen tieferen Einblick in das Wesen des „Biologischen Aufstiegs” vermitteln.This article deals with the question of the criteria for the “biological ascent” of the organic world, resting on fossil evidence. That is, of that improvement which is not only restricted to the framework of a given “general structure” as is the “improvement of adaptation”, but which also leads beyond general structures of differentiated levels to a higher type,e.g. from the fishes through the amphibians and reptiles to the mammals or birds. Two groups of criteria are discussed at length, their content exposed and their univocity for the characterisation of this “biological ascent” is examined. The first group includes the criteria of “increasing differentiation” and “more harmonious integration”. The basis for these is the morphological-physiological differentiation, or more exactly, the “totality” of the organisms,i.e., their variety-in-unity. The second group of criteria, “increasing independence of environment” and “increasing individual autonomy”, is derived from the relationships of the organism to its environment and to other living forms, and stresses the “subsistence” of individuals,i.e., their greater or lesser degree of independence or self-sufficiency. Now since “totality” and “subsistence” are the decisive elements in a biological definition of the individual, it may be said that the “biological ascent” of an organism is higher, the more perfect its totality and subsistence and therefore its individuality is.The criteria mentioned are not univocal. The reasons for this lack of clarity are varied. First of all, there is no univocal and complete definition of the biological individual, so that it cannot be exactly stated just what gives an organism a more or less perfect individuality. Then the lines, along which improvements are made, and according to which the one remains within the general structure and the other goes beyond the general structure , are so intimately and singularly bound together, that they cannot be cleanly distinguished, and their characteristic notes exactly described. For each representative of a general structure, regardless of its level, is necessarily fitted into an environment and somehow or other specialised. There are no types with only notes of the general structure which show in no direction an “improvment of adaption”, but only the signs of “biological ascent”. Finally, we only have fossil evidence for the development or deployment of the “great general structures” of the animal world, namely that of the vertebrates and of the different groups of invertebrates, not for the most interesting and most important, that is, their “biological ascent” to the level of organisation with which they are found in the Silurian or Cambrian periods. Only that would give us a deeper insight into the essence of “biological ascent”. (shrink)

Name der Zeitschrift: Das Mittelalter Jahrgang: 20 Heft: 2 Seiten: 266-278.

: A popular belief is that the process whereby search engines tailor their search results to individual users, so-called personalization, leads to filter bubbles in the sense of ideologically segregated search results that would tend to reinforce the user’s prior view. Since filter bubbles are thought to be detrimental to society, there have been calls for further legal regulation of search engines beyond the so-called Right to be Forgotten Act. However, the scientific evidence for the filter bubble hypothesis is surprisingly (...) limited. Previous studies of personalization have focused on the extent to which different users get different results lists without taking the content on the webpages into account. Such methods are unsuitable for detecting filter bubbles as such. In this paper, we propose a methodology that takes content differences between webpages into account. In particular, the method involves studying the extent to which users with strong opposing views on an issue receive search results that are correlated content-wise with their personal view. Will users of with strong prior opinion that X is true on average have a larger share of search results that are in favor of X than users with a strong prior opinion that X is false? We illustrate our methodology at work, but also the non-trivial challenges it faces, by a small-scale study of the extent to which Google Search leads to ideological segregation on the issue of man-made climate change. (shrink)

Most of these eight essays on contemporary figures were given as lectures or speeches between 1990 and 1996. A piece on Ernst Cassirer’s humanistic legacy gives the collection its title, but the other subjects treated are far-ranging: Karl Jaspers on the clash of religious cultures, Georg Henrik von Wright’s noncognitive ethics, Gershom Scholem’s magisterial biography of the kabbalist Sabbatai Sevi, Karl-Otto Apel’s hermeneutics, Johann Baptist Metz on the Jewish element in Christianity, Michael Theunissen on the relation of negative theology to (...) social theory, and a review of the work of script writer and film director Alexander Kluge. Habermas unifies this panoply by his fascination with the transformation of the modern West’s key symbols through their confrontation with other cultures. Prime among these symbols are language and religious doctrines, especially Christian and Jewish. When he examines this general theme in particular cases, Habermas first presents an exposé of a thinker, then raises critical questions, and finally points out insights of enduring significance. One decided advantage of his method is its attention to clarity and organization. Probably because these essays were originally delivered orally, they never leave the reader in doubt as to what topics they will handle and when each is being taken up. (shrink)

The argument consists of two main parts. First, it is shown that Augustine understood a people (populus) as a natural entity that is neither completely depraved (the city of Man) nor saintly (the city of God). While Augustine considered the city of God the true republic, he conceded that political bodies approximated its true justice and that they too deserve to be considered republics. This understanding is implicit in his reformulation of Cicero's definition of a people, and his reformulation maintains (...) the classical concept of political friendship. Second, for Augustine, a people can articulate itself through a republican mode. Neither a monarchy nor a pure democracy, Augustine understood a republic to include the functions of governors and governed (possibly being traded among different individuals), which means that a republic possesses democratic, aristocratic and monarchic parts. Augustine accounts for the monarchic part in his analysis of what in Rome was called the dictator, the office taken up by someone without formal political power and used to save the republic in crisis situations. (shrink)

Simple heuristics exploit basic human abilities, such as recognition memory, to make decisions based on sparse information. Based on the relative speed of recognizing two objects, the fluency heuristic infers that the one recognized more quickly has the higher value with respect to the criterion of interest. Behavioral data show that reliance on retrieval fluency enables quick inferences. Our goal with the present functional magnetic resonance imaging study was to isolate fluency-heuristic-based judgments to map the use of fluency onto specific (...) brain areas that might give a better understanding of the heuristic’s underlying processes. Activation within the claustrum for fluency heuristic decisions was found. Given that claustrum activation is thought to reflect the integration of perceptual and memory elements into a conscious gestalt, we suggest this activation correlates with the experience of fluency. (shrink)