Psychology and philosophy have long reflected on the role of perspective in vision. Since the dawn of modern vision science—roughly, since Helmholtz in the late 1800s—scientific explanations in vision have focused on understanding the computations that transform the sensed retinal image into percepts of the three-dimensional environment. The standard view in the science is that distal properties—viewpoint-independent properties of the environment (object shape) and viewpoint-dependent relational properties (3D orientation relative to the viewer)–are perceptually represented and that properties of the proximal (...) stimulus (in vision, the retinal image) are not. This view is woven into the nature of scientific explanation in perceptual psychology, and has guided impressive advances over the past 150 years. A recently published article suggests that in shape-perception, the standard view must be revised. It argues, on the basis of new empirical data, that a new entity—perspectival shape—should be introduced into scientific explanations of shape perception. Specifically, the article’s centrally advertised claim is that, in addition to distal shape, perspectival shape is perceived. We argue that this claim rests on a series of mistakes. Problems in experimental design entail that the article provides no empirical support for any claims regarding either perspective or the perception of shape. There are further problems in scientific reasoning and conceptual development. Detailing these criticisms and explaining how science treats these issues is meant to clarify method and theory, and to improve exchanges between the science and philosophy of perception. (shrink)

Despite growing evidence to the contrary, researchers continue to posit causal links between cannabis, crime, psychosis, and violence. These spurious connections are rooted in history and fueled decades of structural limitations that shaped how researchers studied cannabis. Until recently, research in this area was explicitly funded to link cannabis use and harm and ignore any potential benefits. Post-prohibition cannabis research has failed to replicate the dire findings of the past. This article outlines how the history of controlling cannabis research has (...) led to various harms, injustices, and ethical complications. We compare commonly cited research from both the prohibition and post-prohibition eras and argue that many popular claims about the dangers of cannabis are the result of ethical lapses by researchers, journals, and funders. We propose researchers in this area adopt a duty of care in cannabis research going forward. This would oblige individual researchers to establish robust research designs, employ careful analytic strategies, and acknowledge limitations in more detail. This duty involves the institutional recognition by funders, journals, and others that cannabis research has been deliberately misconstrued to criminalize, stigmatize, and pathologize. (shrink)

While the general topic of agency has been collaboratively explored in philosophy and psychology, mental action seems to resist such an interdisciplinary research agenda. Since it is difficult to empirically access mental agency beyond externally measurable behavior, the topic is mainly treated philosophically. However, this has not prevented philosophers from substantiating their arguments with psychological findings, but predominantly with those which allegedly limit the scope and conscious controllability of mental action in favor of automated subpersonal processes. By contrast, the call (...) for a methodological extension through introspective access is particularly noticeable among proponents of a wider significance of mental action. Taking this up, it is shown how an empirical-introspective methodology can obtain a differentiated structure of mental activities occurring in directed thought. The empirical results gained under replicable conditions with 32 participants lead to insights about mental activity regarding (1) immanent causation, (2) content-free intention, (3) active receptivity and (4) its selective openness to mental content, and (5) different levels of observational awareness. These arguments speak for assigning an agentive status to the activities studied and hence for a more significant role of mental action in cognitive processes. (shrink)

The ongoing debate on the ethics of self-driving cars typically focuses on two approaches to answering such questions: moral philosophy and social science. I argue that these two approaches are both lacking. We should neither deduce answers from individual moral theories nor should we expect social science to give us complete answers. To supplement these approaches, we should turn to political philosophy. The issues we face are collective decisions that we make together rather than individual decisions we make in light (...) of what we each have reason to value. Political philosophy adds three basic concerns to our conceptual toolkit: reasonable pluralism, human agency, and legitimacy. These three concerns have so far been largely overlooked in the debate on the ethics of self-driving cars. (shrink)

In lieu of an abstract, here is a brief excerpt of the content:Max Nordau, Madison Grant, and Racialized Theories of IdeologyJohannes Hendrikus BurgersRecently, Jonathan Spiro has undertaken the Herculean task of recovering the ghost of the conservationist and anti-immigrant racist Madison Grant from a very limited archival record. Spiro’s biography is an invaluable resource that covers, in as much detail as possible, Grant’s life and thought. Although largely forgotten now, in the first half of the twentieth century Grant was a (...) leading figure in the eugenics movement that sterilized thousands of people deemed unfit to reproduce. He was also a prominent advocate of immigration restriction, and he helped southern racists ban miscegenation.1 Like other scholars before him, Spiro argues that Grant arrived at many of his views through the work of such racial scientists as Arthur de Gobineau, Francis Galton, and Houston Stewart Chamberlain.2 While he and other scholars are certainly correct in drawing such a lineage, one unlikely and hitherto unexplored parallel to Grant’s thought specifically, and American eugenics in general, was that of Hungarian cultural critic and later Zionist leader, Max Nordau. By elucidating their intellectual kinship, this paper seeks to reveal the extent to which early twentieth-century transatlantic racial discourse involved widely different actors who were at times unknowingly espousing quite similar racial views for entirely different ends. [End Page 119]The reasons why Nordau’s name has not appeared in relation to Grant are several. First, there is a lack of biographical material on Madison Grant: much of his personal correspondence was purloined or destroyed.3 Consequently, evidence that Grant had been influenced by or even read Nordau is largely circumstantial and inferential, and cannot be verified through archival documentation. Secondly, despite a recent Nordau renaissance,4 and notwithstanding certain key publications, he still remains a somewhat marginal figure in the narrative of late nineteenth century history, especially in the American context.5 Thirdly, and more importantly, after the death of Theodore Herzl, Nordau became the most prominent leader of the Zionist movement at the beginning of the twentieth century. Certainly, someone as committed to Jewish advancement and Jewish emigration to America as Nordau, was hardly likely to share similar racial views with a white supremacist, anti-immigration propagandist, and vicious anti-Semite like Grant. In fact, the only indirect textual connection between the two thinkers is the verbatim use of one of Nordau’s articles by Grant’s racist disciple Lothrop Stoddard; a connection that has only been explored very briefly in a footnote by Nordau biographer Meir Ben-Horin.6 Otherwise, there has been no attempt to see these two thinkers in the same context. Hence, contrary to current scholarly opinion about both writers, this paper will show that they both operated within the same racial framework. While making no claim here of a direct causal relationship between Nordau and Grant, I do contend that during this period there is enough intellectual crosspollination of racial theories to create a significant, not merely coincidental, overlap of ideas. Simplifying early twentieth-century racial thinking into two distinct camps of non-racists and racists is conceptually flawed, even if, as in this case, the ostensible disparities could not be greater.The idea Nordau helped introduce to America, and the idea Grant used later, was that there was a hereditary link between race and ideology. Both believed a person’s racial makeup directly influenced their political ideology. Grant and other anti-immigration nativists used this logic to justify the [End Page 120] exclusion of non-Anglo-Saxon foreigners. Unhealthy, degenerate, foreign bodies presented a danger to the body politic, not just because they were not as productive as the white “Nordics” and therefore caused a drain on the system, but, more significantly, because their inferior type made them susceptible to radical anti-American ideologies like socialism and anarchism. Accordingly, their degeneracy was both an economic strain and a political danger to post-World War I America. The tragic irony is that Nordau’s contribution to the late nineteenth-century racial science was intended to combat increasingly virulent European anti-Semitism. Instead, it ended up in the hands of anti-Semitic propagandists. In fact, at the time that Nordau was urging Jews... (shrink)

Spatial, physical, and semantic magnitude dimensions can influence action decisions in human cognitive processing and interact with each other. For example, in the SNARC effect, semantic numerical magnitude facilitates left-hand or right-hand responding dependent on the small or large magnitude of number symbols. SNARC-like interactions of numerical magnitudes with the radial spatial dimension (depth) were postulated from early on. Usually, the SNARC effect in any direction is investigated using fronto-parallel computer monitors for presentation of stimuli. In such 2D setups, however, (...) the metaphorical and literal interpretation of the radial depth axis with seemingly close / far stimuli or responses are not distinct. Hence, it is difficult to draw clear conclusions with respect to the contribution of different spatial mappings to the SNARC effect. In order to disentangle the different mappings in a natural way, we studied parametrical interactions between semantic numerical magnitude, horizontal directional responses, and perceptual distance by means of stereoscopic depth in an immersive virtual reality (VR). Two VR experiments show horizontal SNARC effects across all spatial displacements in traditional latency measures and kinematic response parameters. No indications of a SNARC effect along the depth axis, as it would be predicted by a direct mapping account, were observed, but the results show a non-linear relationship between horizontal SNARC slopes and physical distance. Steepest SNARC slopes were observed for digits presented close to the hands. We conclude that spatial-numerical processing is susceptible to effector-based processes but relatively resilient to task-irrelevant variations of radial-spatial magnitudes. (shrink)

Der Beitrag diskutiert die unterschiedlichen Kritiken, die an meiner in „Kontroverse Themen im Unterricht. Konstruktiv streiten lernen“ vorgelegten Position vorgebracht wurden. Im Durchgang durch diese Kritiken werde ich jeweils meine eigene Position klären und aufzeigen, wo Konkretisierungs- und Revisionsbedarf besteht und wo nicht. Ich schließe mit drei Forschungsdesideraten, die Möglichkeiten der konstruktiven Fortführung und Weiterentwicklung der philosophischen und wissenschaftlichen Debatte über kontroverse Themen im Unterricht skizzieren.

In this article, the question in focus is the church and Christianity’s prophetic responsibility towards society, and how in the specific case of the South African-born theologian Gerald John Pillay, his prophetic voice should be characterised. The question is addressed as to whether he was an activist at the barricades or a soft-spoken intellectual in his views on society. After a brief discussion on his bio, the focus is on the phenomenon of being a prophet towards society. Then, the focus, (...) largely based on a literature study, moves to Pillay’s perspectives on the South African and New Zealand contexts, and then a discussion of some of Pillay’s writings on being a prophetic voice follows. Finally, in the conclusion, his specific style and model of being a prophetic voice are analysed. (shrink)

The mechanistic approach in the cognitive and biological sciences emphasizes that scientific explanations succeed by analyzing the mechanisms underlying phenomena across multiple levels. In this paper, we propose a formal strategy to establish such multi-level mechanistic models, which are foundational to mechanistic explanations. Our objectives are twofold: First, we introduce the novel "mLCA" (multi-Level Coincidence Analysis) script, which transforms binary data tables from tests on mechanistic systems into mechanistic models consistent with those tables. Second, we provide several philosophical insights derived (...) from the outcomes generated by this script and its underlying algorithm. Using illustrative examples, we defend the following claims: 1. Inference methods for generating mechanistic models generally require information on how causal factors are assigned to different levels within data tables generated by multi-level structures. 2. The mLCA script successfully produces appropriate mechanistic models from binary data tables, demonstrating the practical application of the philosophical mechanistic approach in the sciences. 3. The number of solutions generated by mLCA increases significantly as the number of relevant factors grows, reflecting adaptations in causal inference methods to meet the demands of multi-level mechanistic modeling. 4. Any further reduction of solutions, if possible, involves pragmatic considerations, a point that carries profound implications for the broader ambitions of the mechanistic approach. By addressing these points, our paper contributes both to the development of practical algorithmic tools and to a deeper philosophical understanding of multi-level mechanistic modeling. (shrink)

This paper is a concluding speech of the Collegium Logicum that was held in Wittenberg from 20th October 1608 until 12th January 1609.

Was macht ein Kind zu einem Kind? Sind Kinder ihren Eltern zur Dankbarkeit verpflichtet? Ist die Schulpflicht eine legitime staatliche Vorgabe? Gibt es ein Recht darauf, Kinder zu haben? -/- Das Handbuch liefert einen systematischen Überblick über die zentralen Konzepte und Theorien sowie die wichtigsten Diskussionsfelder der Philosophie der Kindheit. Zur Debatte stehen neben dem moralischen, rechtlichen und politischen Status von Kindern auch Fragen nach dem instrumentellen oder intrinsischen Wert der Kindheit sowie nach historischen Veränderungen im gesellschaftlichen Umgang mit Kindern.

Zur Einführung.--Wissen und Glaube.--Das gebiet der leblosen Natur.--Die lebendigen Wesen.--Die seele der Grosshirntiere und ihr verhăltnis zum Menschen.--Die Abstammungslehre.--Der ursprung des Lebens auf der Erde.--Die abstammung des Menschen.--Ausblick in metaphysische Ferne.