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The goal of the present study was to investigate whether children’s cognitive strengths can compensate the accompanied weaknesses related to their specific learning difficulties. A Bayesian multigroup mediation SEM analysis in 281 fourth-grade children identified a cognitive compensatory mechanism in children with mathematical learning difficulties : Children with weak number sense, but strong rapid naming performed slightly better on mathematics compared to peers with weak rapid naming. In contrast, a compensatory mechanism was not identified for children with a comorbid mathematical (...) and reading difficulty. One explanation for the latter finding could relate to the lack of ability to compensate, because of the difficulties these children experience in both academic domains. These findings lead to a new direction in research on learning difficulties in mathematics and/or reading by suggesting that children with a learning disability each have a unique profile of interrelated cognitive strengths and weaknesses. Children might compensate with these strengths for their weaknesses, which could lead to learning gains in the affected domain. (shrink)

The theory of quantum mechanics has often been thought to show an affinity with logical empiricism: in both, observation plays a central role, and questions about what is unobservable are dismissed. However, there were also strong tensions between the logical empiricism of the Vienna Circle and implications drawn from quantum physics. In the 1920s and 1930s, many physicists thought that quantum mechanics revealed a limit to what could be known scientifically, and this opened the door to a wide range of (...) speculations, in which quantum mechanics was connected with free will, organic life, psychology, and religion—speculations in which many leading quantum physicists were engaged. Members of the Vienna Circle, such as Frank and Schlick, looked at quantum mechanics for a confirmation of their empiricist views, but they were at the same time critical about these wider implications drawn from quantum mechanics, which in their eyes were connected with broader mystical and irrational trends in society. They engaged in particular with the views of Bohr and Jordan, both of whom expressed a sympathy for logical empiricism while at the same time arguing for claims that proved hard to reconcile with the scientific world conception of the Vienna Circle. (shrink)

When talking about decisionmaking for children with a life-threatening condition, the death of children with brain tumors deserves special attention. The last days of the lives of these children can be particularly harsh for bystanders, and raise questions about the suffering of these children themselves. In the Netherlands, these children are part of the group for whom a wide range of end-of-life decisions are discussed, and questions raised. What does the end-of-life for these children look like, and what motivates physicians (...) and parents to make decisions that may affect the life and death of these children? This article highlights the story of the parents of the sisters Roos and Noor. When both their daughters were diagnosed with a hereditary brain tumor, they had to make similar decisions twice. Their story sheds light on the suffering of children in the terminal phase, and how this suffering may motivate parents and physicians to make decisions that influence the end of life of these children’s lives.We argue that complete knowledge about suffering in the terminal phase of children with brain tumors is impossible. However, by collecting experiences like those of Roos and Noor, we can move toward an experienced-based understanding and better guide parents and physicians through these hardest of decisions. (shrink)

One of the hardest questions to answer for a (Neo)platonist is to what extent and how the changing and unreliable world of sense perception can itself be an object of scientific knowledge. My dissertation is a study of the answer given to that question by the Neoplatonist Proclus (Athens, 411-485) in his Commentary on Plato’s Timaeus. I present a new explanation of Proclus’ concept of nature and show that philosophy of nature consists of several related subdisciplines matching the ontological stratification (...) of nature. Moreover, I demonstrate that for Proclus philosophy of nature is a science, albeit a hypothetical one, which takes geometry as its methodological paradigm. I also offer an explanation of Proclus’ view of what is later called the mathematization of physics, i.e. the role of the substance of mathematics, as opposed to its method, in explaining the natural world. Finally, I discuss Proclus’ views of the discourse of philosophy of nature and its iconic character. (shrink)

This study was designed to investigate the trust relationship between parents and teachers in first grade. Additional research questions were whether trust was related to ethnicity and reading performance. The five facets of trust; benevolence, reliability, competence, honesty and openness, were measured on a 4-point Likert scale. Reading performance was measured by the three-minute test. Parents were found to have more trust in the reliability, competence and honesty of teachers than teachers in parents. Native-Dutch and immigrant parents have the same (...) trust level towards their children?s teacher. However, teachers reported lower trust levels on all five facets of trust for immigrant parents. Our findings indicated that ethnicity has no influence on parents trust in teachers, but ethnicity may explain teachers? trust in parents. Some support was found for the assumption that teachers? trust plays a role in reading performance. Children were found to have higher reading performance when teachers reported higher trust in the benevolence and openness of parents. (shrink)

The recent discovery of an indeterministic system in classical mechanics, the Norton dome, has shown that answering the question whether classical mechanics is deterministic can be a complicated matter. In this paper I show that indeterministic systems similar to the Norton dome were already known in the nineteenth century: I discuss four nineteenth century authors who wrote about such systems, namely Poisson, Duhamel, Boussinesq and Bertrand. However, I argue that their discussion of such systems was very different from the contemporary (...) discussion about the Norton dome, because physicists in the nineteenth century conceived of determinism in essentially different ways: whereas in the contemporary literature on determinism in classical physics, determinism is usually taken to be a property of the equations of physics, in the nineteenth century determinism was primarily taken to be a presupposition of theories in physics, and as such it was not necessarily affected by the possible existence of systems such as the Norton dome. (shrink)

In this paper I show that Proclus is an adherent of the Classical Model of Science as set out elsewhere in this issue (de Jong and Betti 2008), and that he adjusts certain conditions of the Model to his Neoplatonic epistemology and metaphysics. In order to show this, I develop a case study concerning philosophy of nature, which, despite its unstable subject matter, Proclus considers to be a science. To give this science a firm foundation Proclus distills from Plato’s Timaeus (...) the basic concepts Being and Becoming and a number of basic propositions, among others the quasi-definitions of the basic concepts. He subsequently explains the use of these quasi-definitions, that are actually epistemic guides, in such a way that he obtains a connection between a rational and an empirical approach to the natural world. A crucial task in establishing the connection is performed by the faculty of doxa and by geometrical conversion. The result is that Proclus secures a universal, necessary and known foundation for all of philosophy of nature. (shrink)

Bohr’s work in quantum mechanics posed a challenge to philosophers of science, who struggled with the question of whether and to what degree his theories and methods could be considered rational. This paper focuses on Popper, Feyerabend, Lakatos and Kuhn, all of whom recognized some irrational, dogmatic, paradoxical or even inconsistent features in Bohr’s work. Popper, Feyerabend, and Lakatos expressed strong criticism of Bohr’s approach to quantum physics, while Kuhn argued that such criticism was unlikely to be fruitful: progress in (...) science is generally not made through philosophical reflection. Feyerabend’s criticism of Bohr gradually weakened, as he gained a more detailed understanding of the development of Bohr’s views on quantum mechanics, and this went together with an increasingly critical view of normative philosophy of science and was instrumental to his conversion to ‘anarchism’. This paper aims to show that quantum mechanics played a central role in their debates and disagreements on the rationality of science and the possibility of a normative philosophy of science. (shrink)

This article offers a critical reading of three major biographies of the British novelist and philosopher Iris Murdoch. It considers in particular how a limited concern for gender issues has hampered their portrayals of Murdoch as a creator of images and ideas. The biographies are then contrasted to a biographical sketch constructed from Murdoch's philosophical writing. The assessment of the biographies is set against the larger background of the relation between women and philosophy. In doing so, the paper offers a (...) critical response to Sally Haslanger's recent “Musings” (Haslanger 2008), which is contrasted to Virginia Woolf's A Room of One's Own (1929) and Michèle Le Doeuff's Hipparchia's Choice (2007). (shrink)

The literature on the epistemology of ignorance already discusses how certain forms of discrimination, such as racism and sexism, are perpetuated by the ignorance of individuals and groups. However, little attention has been given to how speciesism—a form of discrimination on the basis of species membership—is sustained through ignorance_._ Of the few animal ethicists who explicitly discuss ignorance, none have related this concept to speciesism as a form of discrimination. However, it is crucial to explore this connection, I argue, as (...) ignorance is both an integral part of the injustice done to animals as well as an obstacle to improving their treatment. In order to adequately criticize sustained structural speciesism and injustices towards animals, I develop an epistemological account of ‘speciesist ignorance’. I begin by defining and distinguishing between individual and group-based accounts of speciesist ignorance. I argue that humans, taken as a group, enjoy a position of privilege, which allows them to comfortably remain ignorant of their participation in collective wrongdoings towards animals. Additionally, I point out that speciesist ignorance is structurally encouraged and thereby maintains the dominant view that the human-animal-relationship, as it stands, is just. In sum, this article lays the groundwork for a social epistemology of speciesist ignorance. In particular, it informs further debate about individual and institutional epistemic duties to inquire into speciesism and to inform the public, about the moral culpability of ignorant actions, and about effective animal advocacy and policy which actively rejects speciesist ignorance. (shrink)

In late antiquity, logic developed into what Ebbesen calls the LAS, the Late Ancient Standard. This paper discusses the Neoplatonic use of LAS, as informed by epistemological and metaphysical concerns. It demonstrates this through an analysis of the late ancient debate about hypothetical and categorical logic as manifest in the practice of syllogizing Platonic dialogues. After an introduction of the Middle Platonist view on Platonic syllogistic as present in Alcinous, this paper presents an overview of its application in the syllogizing (...) practice of Proclus and others. That overview shows that the two types were considered two sides of the same coin, to be used for the appropriate occasions, and both relying on the methods of dialectic as revealing the structure of knowledge and reality. Pragmatics, dialectic, and didactic choices determine which type or combination is selected in syllogizing Plato. So even though there is no specific Neoplatonic logic, there is a specific Neoplatonic use of LAS. (shrink)

During the period 1860-1880, a number of physicists and mathematicians, including Maxwell, Stewart, Cournot and Boussinesq, used theories formulated in terms of physics to argue that the mind, the soul or a vital principle could have an impact on the body. This paper shows that what was primarily at stake for these authors was a concern about the irreducibility of life and the mind to physics, and that their theories can be regarded primarily as reactions to the law of conservation (...) of energy, which was used among others by Helmholtz and Du Bois-Reymond as an argument against the possibility of vital and mental causes in physiology. In light of this development, Maxwell, Stewart, Cournot and Boussinesq showed that it was still possible to argue for the irreducibility of life and the mind to physics, through an appeal to instability or indeterminism in physics: if the body is an unstable or physically indeterministic system, an immaterial principle can act through triggering or directing motions in the body, without violating the laws of physics. (shrink)

Making adaptive choices between solution strategies is a central element of contemporary mathematics education. However, previous studies signal that students make suboptimal choices between mental and written strategies to solve division problems. In particular, some students of a lower math ability level appear inclined to use mental strategies that lead to lower performance. The current study uses a pretest-training-posttest design to investigate the extent to which these students’ choices for written strategies and performance may be increased. Sixth graders of below-average (...) mathematics level (N = 147) participated in one of two training conditions: an explicit-scaffolding training designed to promote writing down calculations or a practice-only training where strategy use was not explicitly targeted. Written strategy choices and performance increased considerably from pretest to posttest for students in both training conditions, but not in different amounts. Exploratory results suggest that students’ strategy choices may also be affected by their attitudes and beliefs and the sociocultural context regarding strategy use. (shrink)

Bohm’s interpretation of quantum mechanics has generally been received as an attempt to restore the determinism of classical physics. However, although this interpretation, as Bohm initially proposed it in 1952, does indeed have the feature of being deterministic, for Bohm this was never the main point. In fact, in other publications and in correspondence from this period, he argued that the assumption that nature is deterministic is unjustified and should be abandoned. Whereas it has been argued before that Bohm’s commitment (...) to determinism was connected to his interest in Marxism, I argue for the opposite: Bohm found resources in Marxist philosophy for developing a nondeterministic notion of causality, which is based on the idea of infinite complexity and an infinite number of levels of nature. From ca. 1954 onwards, Bohm’s conception of causality further weakened, as he developed the idea of a dialectical relation between causality and chance. (shrink)

[Masaryk and Korsgaard on God and Moral Obligation: Toward a Moral Argument for the Existence of God].

In lieu of an abstract, here is a brief excerpt of the content:Reviewed by:Herman Daly’s Economics for a Full World: His Life and Ideas by Peter VictorJeroen Van Den Bergh (bio)Victor, Peter (2022). Herman Daly’s Economics for a Full World: His Life and Ideas. Routledge, Oxon UK and New York USA (ISBN: 978–0–367-55694-5).Herman Daly (1938–2022) spent a lifetime thinking about how to achieve a sustainable economy. In an inclusive biography, Canadian economist and environmental scientist Peter Victor discusses his ideas, critiques (...) and debates with others, while clarifying his motivations and struggles. Daly has greatly influenced others, as reflected by numerous prizes awarded to him. This influence is confirmed by original text boxes in the book that contain statements of many colleagues about his work and person, obtained through a questionnaire survey by the author.As a young man, Daly decided to study economics as he imagined it combined humanities and science. He was disappointed in it being less scientific than hoped, but his environmental concern motivated him to work on reestablishing the foundations of the field in environmental science and ethics. Daly is best known for his critique of economic growth and his alternative of the “steady-state economy.” He contributed, however, many other novel concepts and ideas during his lifetime, such as the ends-means spectrum, empty vs full world, uneconomic growth and optimal scale.Victor explains these ideas in a calm pace, showing a deep knowledge of Daly’s work. He, moreover, is able to connect it to ongoing sustainability research. He does all this in the course of thirteen chapters, covering Daly’s early life, education and career, his views on economics, his personal philosophy and the role of religion, his proposal for a steady-state economy, and his opinions on economic growth, population and migration, money and banking, and the perils of trade. [End Page 117]Ultimate endsMany consider Herman Daly to be a heterodox and even heretic economist. He associates himself with ecological economics, the field he co-founded. But while some of his ideas seem radical, many of his core proposals do not deviate substantially from mainstream economics. For instance, his “ultimate ends” concept is perfectly consistent with the broad notion of “welfare” in standard economics. In line with this, many welfare economists—such as Samuelson (1961), Mishan (1967), Hirsch (1976), Sen (1976), Scitovsky (1976) and Frank (1985)—have expressed themselves as critical of GDP (gross domestic product) dominance and growthmania (van den Bergh 2009). In fact, neoclassical economics is not married to economic growth—this is more the empirical side of macroeconomics. While Daly recognizes these subtleties, some of his followers do not.Daly sees his Protestant religion as delivering the ultimate ends, but Victor notes that this has not led to concrete suggestions. Ultimate ends based in Christian religion may be motivated by the promise of eternal (after)life, which in effect means gratifying selfish preferences. Instead, a humanistic perspective—which Daly also seems to embrace—would stress solidarity with future generations and a bioethical view of solidarity with other species. These distinct viewpoints, combined with diversity of human preferences and experiences, suggest that it will be difficult if not impossible for democratic societies to agree upon ultimate means.The Index of Sustainable Economic Welfare (ISEW), a kind of greened or sustainable GDP metric, is Daly’s most concrete elaboration of ultimate means (Daly and Cobb 1989). For many OECD (Organization for Economic Cooperation and Development) countries, it indicates a stabilization of welfare, despite continued GDP growth (Lawn 2003; Posner and Costanza 2011). As clarified by Victor, The ISEW remains close to GDP, produces a monetary measure, has a simple and transparent calculation method, and received considerably attention from theoretical and empirical angles. In view of this, it may well represent the best candidate for a beyond-GDP metric that can replace the GDP. What urgently fails is an effective institutional procedure to achieve its widespread adoption (van den Bergh 2022).Religion, evolution and biodiversityDaly’s religious standpoint make him skeptical of the modern scientific worldview which regards the world to be governed by materialism and evolution, with no role for a higher purpose or an ultimate end. This led him... (shrink)

"Initium ut esset, creatus est homo": Iris Murdoch on Authority and Creativity In 1970 the British novelist and philosopher Iris Murdoch published both her thirteenth novel, A Fairly Honourable Defeat, and her best known work of philosophy, The Sovereignty of Good. Given the proximity of these publication dates, it does not surprise that there are many points of comparison between these two works. The novel features, for instance, a character writing a work of moral philosophy not unlike Murdoch's own The (...) Sovereignty of Good, while another character exemplifies her moral philosophy in his life.This article proposes a reading of the novel as a critical commentary on the philosophical work, focusing on the tension between creation and authority. While Murdoch considers humans to be first and foremost creative, she is at the same time wary of the misleading nature of any act of creation. For Murdoch, any creator and any creation—a beautiful picture as well as a watertight theory—may transmit a certain authority, and that authority may get in the way of acknowledging reality. It thus hinders the moral life, which for Murdoch should be thought of as a life of attention—to reality and ultimately to the Good—rather than a series of wilful creations and actions.A Fairly Honourable Defeat queries the possibility and danger of creation, through different characters as well as through images of cleanliness and messiness. Thus, the character whose book of moral philosophy is challenged and who is found wanting when putting his ideas to practice, likes ‘to get things clear’. Another character, whose interferences create the novel's drama, has a self-confessed ‘passion for cleanliness and order’. The saint of the story, in contrast, does not interfere unless by necessity, and resides in one of the filthiest kitchens in the history of literature. Yet, none of the main characters exemplifies a solution to the tension between creation and authority found in Murdoch's philosophy. An indication of a solution is found in a minor character, and in his creations of outrageous bunches of flowers, unusual meals, and absurd interiors. Yet, its location in a subplot suggests that this solution is not in any way final. It is concluded that any final solution should not be expected, not in the least because of the pervasive nature of the tension between creation and authority, which goes well beyond Murdoch's own authorship. (shrink)