Marsilio Ficino, Protegé Cosimos, Pieros und Lorenzos von Medici, gilt als Zentralgestalt des italienischen Renaissance-Platonismus. Mit den Übersetzungen der Dialoge Platons, der Schriften Plotins und des Corpus Hermeticum sowie durch eine theoretische Verknüpfung von antiker Philosophie mit christlicher Religion übte er einen unübersehbar grossen Einfluss auf die europäische Wissenschafts- und Geistesgeschichte aus. Im Zentrum seines Theorie-Gebäudes steht ein komplexes Konzept von Magie, dessen Konstruktion bis heute erforscht wird. Es hat dem Band den Titel gegeben, dessen Themen sich Ficinos intellektuellem Horizont (...) entsprechend jedoch in eine Vielzahl weiterer Aspekte ausdifferenzieren. Diese literarisch-künstlerischen, literaturwissenschaftlichen, wissenschaftshistorischen und philosophisch-theologischen Implikationen von Ficinos Schriften werden paradigmatisch und vergleichend behandelt. (shrink)

Depression is a disorder of impaired emotion regulation. Consequently, examining individual differences in the habitual use of emotion-regulation strategies has considerable potential to inform models of this debilitating disorder. The aim of the current study was to identify cognitive processes that may be associated with the use of emotion-regulation strategies and to elucidate their relation to depression. Depression has been found to be associated with difficulties in cognitive control and, more specifically, with difficulties inhibiting the processing of negative material. We (...) used a negative affective priming task to assess the relations among inhibition and individual differences in the habitual use of rumination, reappraisal, and expressive suppression in clinically depressed, formerly depressed, and never-depressed participants. We found that depressed participants exhibited the predicted lack of inhibition when processing negative material. Moreover, within the group of depressed participants, reduced inhibition of negative material was associated with greater rumination. Across the entire sample, reduced inhibition of negative material was related to less use of reappraisal and more use of expressive suppression. Finally, within the formerly depressed group, less use of reappraisal, more use of rumination, and greater expressive suppression were related to higher levels of depressive symptoms. These findings suggest that individual differences in the use of emotion-regulation strategies play an important role in depression, and that deficits in cognitive control are related to the use of maladaptive emotion-regulation strategies in this disorder. (shrink)

Mueller et al. discuss the role of acoustic cues in detecting language structure more generally. Across languages, there are clear links between acoustic cues and syntactic structure. They show that AGL experiments implementing analogous links demonstrate that prosodic cues, as well as various auditory biases, facilitate the learning of structural rules. Some of these biases, e.g. for auditory grouping, are also present in other species.

: This paper is concerned with the claim that epistemic terms and categories are historical entities. The starting point is the observation that recent attempts at historical studies of epistemic terms fail to bridge the gap between history and philosophy proper. I examine whether, and how, it is possible to forge a closer link between historical and philosophical aspects of conceptual analysis. The paper explores possible links by analyzing aspects of the concept of error. A "pragmatic" and a "mentalist" notion (...) of error are identified in current philosophical studies of error: according to the latter, errors can be ascribed only to mental operations, according to the former, errors can also be ascribed to things and processes. The paper then draws on historical accounts of optical instruments to highlight certain presuppositions and implications of these two uses of the term. Contextual features and trans-contextual structures of the notion of error are distinguished. In conclusion, I argue that an intimate link between history and philosophy of science can be forged by an analysis ofthe development of conceptual arrangements which allows for trans- contextual structural aspects while drawing attention to the contextual epistemological and scientific conditions of their re-arrangement. (shrink)

This volume thus clears the ground for the productive and fruitful integration of these new developments into philosophy of science.

Sustained negative affect is a hallmark feature of depressive episodes. The ability to regulate emotional responses to negative events may therefore play a critical role in our understanding of this debilitating disorder. Individual differences in cognitive processes such as attention, memory, and interpretation may underlie difficulties in emotion regulation and numerous studies have identified cognitive biases and deficits that characterise depressed people. Few studies, however, have explicitly linked these biases to the difficulties in emotion regulation that are associated with depression. (...) In this paper we discuss relations among cognitive processes and emotion regulation and review the depression literature to identify cognitive biases and deficits that may underlie maladaptive responses to negative events and mood states. Our review suggests that difficulties in the disengagement from negative material, memory biases, and deficits in cognitive control are frequently observed in depressive disorders and may be associated with the use of maladaptive emotion regulation strategies, such as rumination. These biases may also be related to difficulties implementing strategies that are effective for non-depressed people, such as recall of mood-incongruent material and reappraisal. Our review also suggests, however, that empirical studies linking cognitive biases and emotion regulation in depression are still largely missing and would present an important goal for future research in this area. (shrink)

This essay is a contribution to the history of methodological thought. I focus on key methodological criteria for successful experimentation, replication and multiple determinations of empirical evidence. Drawing on reports of experiments with viper venom from the late seventeenth and late eighteenth centuries, as well as on present-day methodological thought I examine whether past experimenters regarded repetition, replication, and multiple determinations as criteria for validity; what exactly they meant by this; what they hoped to gain by repeating, varying, triangulating, and (...) replicating; and how relevant these criteria were for them. I also consider if this analysis has implications for current philosophical work on the methodology of experimental practice. (shrink)

The ability to process center‐embedded structures has been claimed to represent a core function of the language faculty. Recently, several studies have investigated the learning of center‐embedded dependencies in artificial grammar settings. Yet some of the results seem to question the learnability of these structures in artificial grammar tasks. Here, we tested under which exposure conditions learning of center‐embedded structures in an artificial grammar is possible. We used naturally spoken syllable sequences and varied the presence of prosodic cues. The results (...) suggest that mere distributional information does not suffice for successful learning. Prosodic cues marking the boundaries of the major relevant units, however, can lead to learning success. Thus, our data are consistent with the hypothesis that center‐embedded syntactic structures can be learned in artificial grammar tasks if language‐like acoustic cues are provided. (shrink)

In Extragalactic Reality: The Case of Gravitational Lensing Hacking resumes the discussion of scientific realism from the last chapter of Representing and Intervening. Since the criterion of manipulability cannot be applied to astronomical objects, experimental entity realism seems to be restricted to terrestrial entities. In fact, Hacking explicitly argues against astronomical realism. The case at issue is the existence of gravitational lenses. In this paper, I question Hacking 's chief witness for astronomical antirealism: the gravitational lens system “0957+ 561”. It (...) will be shown that Hacking 's argumentation is misleading. Discussing astronomical realism as theory realism, Hacking focuses on the question of how to infer the existence of gravitational lenses from the truth of gravitational lens theory. But neither the reconstruction of gravitational lensing in terms of inference to the best explanation nor the argument of underdetermination are tenable under closer inspection. My thesis is that a realist account of gravitational lensing can be given by relying on observation, causal capacities and home truths. (shrink)

This article sets out to provide a conceptual contribution to theoretical and empirical work on the level of media repertoires. We will first discuss theoretical approaches which allow for an explanation of media repertoires and relate them to the most prominent approaches to selective audience behavior. Secondly, in order to empirically analyze media repertoires we propose a combination of secondary analyses of existing surveys on media use and qualitative studies on the internal ‘architecture’ of these repertoires and their practical meaning (...) in the user's everyday life. These proposals for secondary analyses are illustrated by two examples based on different data sets and referring to different levels of analysis. (shrink)

Comprendre les pratiques d'économie solidaire au regard de la notion d'espace public suppose de mettre en évidence les tensions que ces pratiques mettent en oeuvre : à partir des solidarités et de réciprocités éprouvées dans les « mondes vécus » et leurs espaces culturels, ces pratiques combinent des ressources du marché, de l'économie publique et de la réciprocité dans la visée d'une économie juste répondant à une délibération démocratique entre les acteurs concernés. Une telle perspective oblige à affronter une conception (...) pluraliste et agonistique des espaces publics où sont en tension l'agir stratégique des acteurs, leurs « mondes vécus », sources d'identités et conditions de l'autonomisation du sens de l'action, et des espaces d'argumentation et de débats où s'élabore un bien commun reconnu comme juste. Ces tensions doivent être aussi comprises dans leur ouverture conflictuelle aux espaces politico-administratifs institués et aux espaces d'influence d'acteurs poursuivant leurs intérêts particuliers dans le territoire local. Mais, sous couvert de partenariat et de coopération entre les acteurs, les nouvelles politiques locales entérinent les rapports inégalitaires entre les acteurs et conduisent la société civile à taire ses dissensions sous peine de voir se tarir leur légitimité politique et leurs financements publics.In order to evaluate the practices of civil and solidarity-based economy, it is necessary to be aware of the tensions that they generate. They combine market resources, public support, and ideas of reciprocity, aiming to create fair economies and to democratically mobilize those concerned. Such a perspective requires a pluralist and conflictual conception of public spheres. In this perspective, tensions become important between strategic action and identities. These tensions must also be understood as they arise in political and administrative arenas and in the context of local actors motivated by self-interest in the local community. Although there appears to be a partnership between all the actors concerned, new policies directed towards local communities confirm the existence of social inequalities between the various stakeholders. The result is often that civil society keeps silent about these tensions lest their political influence and sources of public finance should dry up. (shrink)

This article presents a new framework for the analysis of experimental control. The framework highlights different functions for experimental controls in the realization of an experiment: experimental controls that serve as tests and experimental controls that serve as probes. The approach to experimental control proposed here can illuminate the constitutive role of controls in knowledge production, and it sheds new light on the notion of exploratory experimentation. It also clarifies what can and what cannot be expected from reviewers of scientific (...) journal articles giving feedback on experimental controls. (shrink)

Risk assessment is an evidence-based analytical framework used to evaluate research findings related to environmental and public health decision-making. Different routines have been adopted for assessing the potential risks posed by substances and products to human health. In general, the traditional paradigm is a hazard-driven approach, based on a monocausal toxicological perspective. Questions have been raised about the applicability of the general chemical risk assessment approach in the specific case of nanomaterials. Most scientists and stakeholders assume that the current standard (...) methods are in principle suitable, but point out that experimental aspects and practical guidelines need specific adaptations. Beyond this laboratory level, risk assessment of nanomaterials also faces a number of substantive and procedural limitations, which are intrinsically attributed to the general orthodoxy of the risk assessment concept. Moreover, the developed formalism used to organize scientific knowledge is closely interlinked with the underlying governance design and the mode of interaction between the two spheres of ‘science’ and ‘decisions’. This contribution will provide a closer look at the evolution of different institutional settings for risk assessment in the context of decision-making. Improved risk governance frameworks with different narratives, process designs and procedural elements will be compared. The question of a general principle of enhanced organization of risk assessment will be discussed taking account of the barriers of substantive and procedural limitations in the special case of nanomaterials. (shrink)

While painted wooden icons of the Nursing Virgin were relatively common in fifteenth-century Ethiopia, only one miniature of the motif of the time has come to light. This image, bound into a later manuscript of the Miracles of Mary, is painted in a decidedly abstract style, comparable to other representations of the Virgin in fifteenth-century Ethiopian book illustration. Relying on Peirce’s distinction between index and icon, this article considers how such abstract representations might have been meant to evoke the divine (...) presence of Mary as a spiritual trace of the artist’s and the audience’s devotional practices, rather than as a potentially miracle-working depiction of her corporeal presence based on figural likeness, as was the case with painted wooden panels. Incorporating references to Ethiopian and Western theorists of modernity, the essay further proposes to view the multiple and interlocking mirror effects in book art as instances of second-order observation, in which, for example, the Virgin sees herself depicted in a book of her miracles, the compilation of which she commissioned and aided; the scribe and artist is featured in one of the miracles he himself is writing and illustrating; and the donor is depicted gazing at the viewer. Whether enabling skeptical distance or a more fully immersive spiritual experience undisturbed by attempts to capture corporeal likeness, or both, this essay proposes to analyze the politics and theology of abstraction in fifteenth-century Ethiopian book art by centering on a rare depiction of the Nursing Virgin. (shrink)

This essay offers some reflections on the recent history of the disputes about the relation between history and philosophy of science (HPS) and the merits and prospects of HPS as an intellectual endeavor. As everyone knows, the issue was hotly debated in the 1960s and 1970s. That was the hey-day of the slogan "history without philosophy of science is blind, philosophy without history of science is empty" as well as of the many variations on the theme of HPS as a (...) "marriage of convenience," "intimate relation," or "marriage for the sake of reason." There was a flurry of interest in the early 1990s, as evidenced by sections in the 1992 and 1994 issues of PSA, entitled: "Do the History of Science and the Philosophy of .. (shrink)

Cognitive control processes, such as updating task-relevant information while switching between multiple tasks, are substantially impaired in older adults. However, it has also been shown that these cognitive control processes can be improved by training interventions, e.g., by training in task switching. Here, we applied an event-related potential approach to identify whether a cognitive training improves task-preparatory processes such as updating of relevant task goals. To do so, we applied a pretest-training-posttest design with eight training sessions. Two groups of older (...) adults were either trained in task switching or in performing single tasks and we compared their performance to a group of untrained younger adults. To foster cue updating in the treatment group, we applied a cue-based switching task in which the two task cues were randomly selected prior to target presentation so that participants had time to prepare for the upcoming task. In contrast, the control group also received task cues but those were redundant as only one task had to be performed. We also examined whether training in cue updating during task switching can be transferred to a similar cognitive control task measuring updating of context information, namely a modified version of the AX-Continuous Performance Task. The results revealed training-specific improvements in task switching, that is, a larger improvement in blocks requiring switching in comparison to single tasks at the behavioral level. In addition, training specific-effects were also found at the neuronal level. Older adults trained in cue updating while switching showed a reduction in mixing costs in the cue-related P3, indicating an improvement in preparatory updating processes. Additionally, P3 topography changed with training from a very broad to a parietally focused scalp distribution similar to the one found in younger adults. However, we did not obtain training-specific improvements in context updating in the AX-CPT neither at the behavioral level nor at the neuronal level. Results are discussed in the context of the ongoing debate on whether transfer of cognitive training improvements is possible. (shrink)

Summary The first systematic studies on the velocity of chemical reactions (now called reaction rates) were published in the 1850s and 1860s. Inquiring about the course of chemical change, their authors established empirical equations on the basis of their measurement results. But these laws, which represented reaction velocities as proportional to the actual concentration of the reagents, could not be given a physical foundation. The chemists themselves regarded their propositions as mere ad hoc hypotheses. In 1867 Leopold Pfaundler formulated a (...) qualitative theory of chemical processes based on Clausius's version of the kinetic gas theory (and more specifically on his theory of evaporation), and on Saint-Claire Deville's investigations of dissociation processes. Pfaundler's theory was based on farreaching analogies: between evaporation and dissociation; between the gaseous state and the activated state; and between evaporation- and chemical-equilibrium. Four points of Pfaundler's theory must be regarded as essential: (1) the reduction of chemical change to randomly occurring molecular collisions, only showing regularities in great numbers according to the laws of probability; (2) the idea that molecules are in different states of internal and external motion, which determines whether a collision results in a reaction; (3) the view of the reaction step as a transition from internal to external motion and vice versa; and (4) the introduction of a new molecular-kinetic definition of chemical affinity as the maximum of internal motion. With these assumptions, Pfaundler provided the empirical rate equations with a new statistical interpretation and a physical Justification. (shrink)

This essay is concerned with the epistemic roles of error in scientific practice. Usually, error is regarded as something negative, as an impediment or obstacle for the advancement of science. However, we also frequently say that we are learning from error. This common expression suggests that the role of error is not—at least not always—negative but that errors can make a fruitful contribution to the scientific enterprise. My paper explores the latter possibility. Can errors play an epistemically productive role in (...) scientific research? The paper begins with a review of several twentieth-century approaches to error and the various agendas behind them. It is shown that only very few scholars have considered whether errors can be productive. The main part of the paper examines a concrete debate in early nineteenth-century microscopy and analyses how the microscopists coped with the problem of error. Drawing on this material, the article offers some terminological clarifications of the common notion ‘learning from error’. The conclusion argues that error can indeed play epistemically productive roles in scientific practice.Keywords: Error; Nineteenth-century microscopic anatomy. (shrink)

This introduction to the special issue of the same title sets out the context for a critical examination of contemporary developments in sociotechnical systems deployed in the name of security. Our focus is on technologies of tracking, with their claims to enable the identification of those who comprise legitimate targets for the use of violent force. Taking these claims as deeply problematic, we join a growing body of scholarship on the technopolitical logics that underpin an increasingly violent landscape of institutions, (...) infrastructures, and actions, promising protection to some but arguably contributing to our collective insecurity. We examine the asymmetric distributions of sociotechnologies of security; their deadly and injurious effects; and the legal, ethical, and moral questions that haunt their operations. (shrink)

Introduction: "a matter so obscure, so difficult, and likewise so new . . ." -- Argument, narrative, and methods discourse -- Many, many experiments -- Trying again -- Newtonian poison: a mechanical account of viper venom -- Experiment as the only guide -- Thousands of experiments -- Practical criticisms -- Controlling experiment -- Unobservables -- Fragmentation and modularity: notes on crotoxin -- Conclusion: about methods.

This paper discusses two methodological notions, the concepts Gegenprobe (countercheck) and Gegenversuch (counter-trial), which were widely applied, discussed, relied upon, and defended in German-language writings about empirical inquiry. In the decades around 1800, they were common in physiology; medicine; agriculture; chemistry; various technologies, such as printing, metallurgy, and mining; accounting; and legal and political argumentation. The ubiquity of those concepts signals a broad concern with securing empirical findings and empirical knowledge. Gegenproben and Gegenversuche – the terms as well as the (...) practices – are evidence for the close connection among explicitly knowledge-seeking endeavors and crafts and technologies. Physiological experiments, chemical analyses, agricultural or vaccination trials were indebted to applied and practical procedures of making and assaying. What united these different fields was the fact that the problems that had to be solved were very complex yet at the same time of immediate relevance to everyday lives (like diseases or crops) or highly controversial (like vital forces or spontaneous generation). We know that late eighteenth-century and early nineteenth-century practices of inquiry were firmly embedded in applied, technical contexts; this essay shows that methodological notions were anchored in applied, technical contexts as well. (shrink)