Virtual reality (VR) is the computer simulation of a three‐dimensional environment that a person can interact with using special electronic equipment, such as a headset with an integrated display. Often coupled with VR, exergames are video games that involve physical exercise. Little is known regarding the chronic effects of exergaming through VR chon cognitive functions. Eleven young participants were enrolled in this crossover exploratory study. They had to follow two trainings of 5 consecutive days, 15 min per day, interspaced by (...) a 1‐month washout period. Trainings were performed in a random order: (1) a video training using shadow boxing fitness videos (SBV) and (2) a VR training using a three‐dimensional game where the aim is to cut moving cubes with a sword in each hand. Before and after each training period, a battery of cognitive tests was performed to assess executive functions, such as attention (change blindness), reaction time, response inhibition (go/no‐go, Stroop task), or flexibility (trail making test). Fine motor skills were also evaluated through a Fitt's task. No effect of the SBV training was observed on any of the cognitive functions tested. On the contrary, a significant increased performance in selective attention and observation tests was found after VR training, as well as in inhibitory processes (Stroop and go/no‐go). Other performances were unaffected by either VR or SBV training. The present study argues that VR exergaming is a promising tool to promote cognitive enhancement but targets specific functions according to the type of interface/game that is used. (shrink)

The kinds of models discussed in this paper function as measuring instruments. We will concentrate on two necessary steps for measurement: (1) the search of a mathematical representation of the phenomenon; (2) this representation should cover an invariant relationship between the properties of the phenomenon to be measured and observable accociated attributes of a measuring instrument. Therefore, the measuring instrument should function as a nomological machine. However, invariant relationships are not necessarily ceteris paribus regularities, but could also occur when the (...) influence of the environment is negligible. Then we are able to achieve accurate measurements outside the laboratory. (shrink)

Experimental modeling in biology involves the use of living organisms (not necessarily so-called "model organisms") in order to model or simulate biological processes. I argue here that experimental modeling is a bona fide form of scientific modeling that plays an epistemic role that is distinct from that of ordinary biological experiments. What distinguishes them from ordinary experiments is that they use what I call "in vivo representations" where one kind of causal process is used to stand in for a physically (...) different kind of process. I discuss the advantages of this approach in the context of evolutionary biology. (shrink)

This paper takes as a starting point a recent development in privacy-debates: the emphasis on social and institutional environments in the definition and the defence of privacy. Recognizing the merits of this approach I supplement it in two respects. First, an analysis of the relation between privacy and autonomy teaches that in the digital age more than ever individual autonomy is threatened. The striking contrast between on the one hand offline vocabulary, where autonomy and individual decision making prevail, and on (...) the other online practices is a challenge that cannot be met in a social approach. Secondly, I elucidate the background of the social approach. Its importance is not exclusively related to the digital age. In public life we regularly face privacy-moments, when in a small distinguished social domain few people are commonly involved in common experiences. In the digital age the contextual integrity model of Helen Nissenbaum has become very influential. However this model has some problems. Nissenbaum refers to a variety of sources and uses several terms to explain the normativity in her model. The notion ‘context’ is not specific and faces the reproach of conservatism. We elaborate on the most promising suggestion: an elaboration on the notion ‘goods’ as it can be found in the works of Michael Walzer and Alisdair Macintyre. Developing criteria for defining a normative framework requires making explicit the substantive goods that are at stake in a context, and take them as the starting point for decisions about the flow of information. Doing so delivers stronger and more specific orientations that are indispensible in discussions about digital privacy. (shrink)

Since the February 2020 publication of the article ‘Flattening the curve’ in The Economist, political leaders worldwide have used this expression to legitimize the introduction of social distancing measures in fighting Covid-19. In fact, this expression represents a complex combination of three components: the shape of the epidemic curve, the social distancing measures and the reproduction number \. Each component has its own history, each with a different history of control. Presenting the control of the epidemic as flattening the curve (...) is in fact flattening the underlying natural-social complexity. The curve that needs to be flattened is presented as a bell-shaped curve, implicitly suggesting that the pathogen’s spread is subject only to natural laws. The \ value, however, is, fundamentally, a metric of how a pathogen behaves within a social context, namely its numerical value is affected by sociopolitical influences. The jagged and erratic empirical curve of Covid-19 illustrates this. Although the virus has most likely infected only a small portion of the total susceptible population, it is clear its shape has changed drastically. This changing shape is largely due to sociopolitical factors. These include shifting formal laws and policies, shifting individual behaviors as well as shifting various other social norms and practices. This makes the course of Covid-19 curve both erratic and unpredictable. (shrink)

Regret and disappointment have in common the fact that they are experienced when the outcome of a decision is unfavourable: They both concern “what might have been”, had things been different. However, some regret and disappointment theorists regard the differences between these emotions as important, arguing that they differ with respect to the conditions under which they are felt, and how they affect decision making. The goal of the present research was to examine whether and how these emotions also differ (...) with respect to the way in which they are experienced. Participants were asked torecall aninstance of intense regret or disappointment andto indicate what they felt, thought, felt like doing, did, and were motivated to do during this experience (cf. Roseman, Wiest, & Swartz, 1994). Significant differences between regret and disappointment were found in every category. These differences were most pronounced for “action tendencies” (what participants felt like doing) and “emotivations” (what they were motivated to do). These results suggest that the two emotions have differential implications for future behaviour. (shrink)

El modelo viquiano propuesto en este trabajo tiene hoy día implicaciones concretas para la lingüística y las ciencias cognitivas. A nuestro parecer, hoy las investigaciones en estos campos no hacen otra cosa que verificar la existencia de un vínculo gnoseológico entre sentido, concepto y metáfora que Vico exponía en la Scienza nuova. Vico demostró, ante todo, que la lógica poética constituye la facultad preliminar que permite el comportamiento simbólico humano. Dicha noción falta del todo en las actuales investigaciones sobre la (...) metáfora; y falta claramente la noción de Homo Poeticus en todas las visiones hasta ahora expuestas en lingüística. La concepción viquiana de la lógica poética permitirá a estas ciencias trazar el recorrido científico que deberán seguir en el futuro.Recent researches in linguistics and cognitive sciences may be brought as to show that there exist a empistemological bound between sense, concept and metaphor which Vico already acknowledged in his Scienza nuova. While Vico clearly showed that poetical logic helps to developing the human symbolic behavior; the concept of Homo poeticus is lacking in recent scholar contributions on issues related with metaphors and linguistics. It is assumed that the Vichian conception on poetical logic may improve a better understanding of the problems with which those sciences have hitherto been concerned. (shrink)

In the social sciences we hardly can create laboratory conditions, we only can try to find out which kinds of experiments Nature has carried out. Knowledge about Nature's designs can be used to infer conditions for reliable predictions. This problem was explicitly dealt with in Haavelmo's (1944) discussion of autonomous relationships, Friedman's (1953) as-if methodology, and Simon's (1961) discussions of nearly-decomposable systems. All three accounts take Marshallian partitioning as starting point, however not with a sharp ceteris paribus razor but with (...) the blunt knife of negligibility assumptions. As will be shown, in each account reflection on which influences are negligible, for what phenomena and for how long, played a central role. (shrink)

Psychologists and neuroscientists extensively rely on computational models for studying and analyzing the human mind. Traditionally, such computational models have been hand-designed by expert researchers. Two prominent examples are cognitive architectures and Bayesian models of cognition. Although the former requires the specification of a fixed set of computational structures and a definition of how these structures interact with each other, the latter necessitates the commitment to a particular prior and a likelihood function that – in combination with Bayes' rule – (...) determine the model's behavior. In recent years, a new framework has established itself as a promising tool for building models of human cognition: the framework of meta-learning. In contrast to the previously mentioned model classes, meta-learned models acquire their inductive biases from experience, that is, by repeatedly interacting with an environment. However, a coherent research program around meta-learned models of cognition is still missing to date. The purpose of this article is to synthesize previous work in this field and establish such a research program. We accomplish this by pointing out that meta-learning can be used to construct Bayes-optimal learning algorithms, allowing us to draw strong connections to the rational analysis of cognition. We then discuss several advantages of the meta-learning framework over traditional methods and reexamine prior work in the context of these new insights. (shrink)

Le Temps, qui n'est ni un être ni l'Être, affirme seul son pouvoir sur toutes choses. Ici intervient la solution pyrrhonienne : penser non contre le Temps mais au fil du temps, la vie n'est qu'un évanouissement de moments. Suivre le mouvement « inégal, irrégulier et multiforme » de la vie, comme dit Montaigne, sans affirmer ou nier quoi que ce soit, mais en étant toujours à l'unisson, telle est alors l'attitude du sceptique.

Dans le vaste domaine de la philosophie, quelle est au juste la place, le lieu d'impact du septicisme? Le septicisme se situe au niveau de ce que Descartes nomme "métaphysique" c'est-à-dire des "racines" mêmes de la philosophie. Métaphysique au sens large de discours touchant ce qui est au-delà de l'expérience, discours de la "totalité". Mais que comprend la "totalité des choses" et qui le sait? Ainsi aux racines mêmes de la philosophie règne l'incertitude, mais cela n'empêche ement une réflexion philosophique. (...) Le discours philosophique comporte trois moments : sceptique, pluraliste, thématique. Réflexion personnelle d'un philosophe expliquant le scepticisme tel qu'il le conçoit, ce livre est aussi une méditation jusqu'au coeur du doute, une exploration vertigineuse de nos illusions. (shrink)

Glenn Harrison [Journal of Economic Methodology, 2013, 20, 103–117] discusses four related forms of methodological intolerance with respect to field experiments: field experiments should rely on some form of randomization, should be disconnected from theory, the concept of causality should only be defined in terms of observables, and the role of laboratory experiments is dismissed. As is often the case, the cause of intolerance is ignorance, as it is here. To acquire knowledge about potential influences, which we need for both (...) the evaluation of internal and external validity of experimental results, we cannot do without theory. A purely empiricist methodology will be unable to give us sufficient understanding of the validity of these results. An account of causality only based on directly observed things, is an account based on factual influences only. This account will be too restricted, because it will not deal with the unobserved potential influences, which we need – again – for the evaluat... (shrink)

According to Suppes, measurement theory, like any scientific theory, should consist of two parts, a set-theoretical defined structure and the empirical interpretation of that structure. An empirical interpretation means the specification – ‘coordinating definitions’ – of a ‘hierarchy of models’ between the theory and the experimental results. But in the case of measurement theory, he defined the relationship between numerical structure and the empirical structure specifically in terms of homomorphism. This is rather a highly restrictive relation between models, and therefore (...) he never succeeded in giving his measurement theory empirical content. This paper discusses what an empirical measurement theory will look like if we would use less restrictive ‘coordinating definitions’ to specify the relationships between the various models. (shrink)

Generally, rational decision-making is conceived as arriving at a decision by a correct application of the rules of logic and statistics. If not, the conclusions are called biased. After an impressive series of experiments and tests carried out in the last few decades, the view arose that rationality is tough for all, skilled field experts not excluded. A new type of planner's counsellor is called for: the normative statistician, the expert in reasoning with uncertainty par excellence. To unravel this view, (...) the paper explores a specific practice of clinical decision-making, namely Evidence-Based Medicine. This practice is chosen, because it is very explicit about how to rationalize practice. The paper shows that whether a decision-making process is rational cannot be assessed without taking into account the environment in which the decisions have to be taken. To be more specific, the decision to call for new evidence should be rational too. This decision and the way in which this evidence is obtained are crucial to validate the base rates. Rationality should be model-based, which means that not only the isolated decision-making process should take a Bayesian updating process as its norm, but should also model the acquisition of evidence (priors and tests results) as a rational process. (shrink)

Templates travel because they offer a tractable format that can be used for model-building in a variety of domains. It is often because of this quality that a particular template is chosen. But one cannot assume that there are always templates ready to model a new phenomenon, and moreover, templates have also been designed at some point. A critical aspect of this designing process is the choice of the mathematical objects with which one hopes to capture this phenomenon. This means (...) that one has to assess which of the properties of different kinds of mathematical objects and which combinations of them are most appropriate. The selection of these objects is based on whether their properties enable the model to perform its function. This selection of mathematical objects is similar to the selection of materials in mechanical design. (shrink)

Cet ouvrage est une réédition numérique d’un livre paru au XXe siècle, désormais indisponible dans son format d’origine.

Objectivity has fruitfully been explored in last two decades, manifested by the many studies on ‘objectivity’ in various scientific disciplines. Due to the variety of contexts studied, the focus on...

Even though it is often presumed that the use of technology like medication administration technology is both safer and more effective, the importance of nurses' know‐how is not to be underestimated. In this article, we accordingly try to argue that nurses' labor, including their different forms of knowledge, must play a crucial role in the development, implementation and use of medication administration technology. Using three different theoretical perspectives (‘heuristic lenses') and integrating this with our own ethnographic research, we will explore (...) how nursing practices change through the use of medication technology. Ultimately, we will argue that ignoring (institutional) complexity and the various types of important knowledge that nurses have, will seriously complicate the implementation of medication administration technology. (shrink)

We are encouraged by the many positive commentaries on our target article. In this response, we recapitulate some of the points raised and identify synergies between them. We have arranged our response based on the tension between data and architecture that arises in the meta-learning framework. We additionally provide a short discussion that touches upon connections to foundation models.

L'expression « jeune fille » n'est pas très fréquente avant le XIXe siècle, tout au moins dans son sens actuel désignant spécifiquement une « fille nubile » ou une « femme jeune non mariée » (Robert). Mais ces définitions elles-mêmes restent approximatives : va-t-on prendre en compte la « nubilité » biologique liée à la menstruation, si variable selon les peuples, les climats, les personnes, et qui semble avoir été nettement plus tardive qu'aujourd'hui ? Ou une nubilité juridique, par..

Notwithstanding the fact that a lot, if not most, of science is done outside the laboratory, most literature in the history and philosophy of science, when discussing the experimental method, focus only on experimentation “within the walls of a laboratory” . To fill this embarrassing gap, Astrid Schwarz has written an excellent book on field experimentation. The field, however, is a much more messy site than a clean lab. In an introduction to a special issue of Osiris on field science, (...) Kuklick and Kohler list a number of the problems related to science in the field: As scientific rigor is defined by the standards of the laboratory, the field is considered to be “a site of compromised work: field sciences have dealt with problems that resist tidy solutions, and they have not excluded amateur participants” . To discuss science in the field, we will have to take account of a methodological tension between laboratory and field standards of evidence and reasoning. .. (shrink)

The current expression of “flatten the curve” has similarities with mid-twentieth century macro-economic policy that can aptly be characterized as “shaping macro phenomena.” To the extent these similarities hold, the historical-epistemological analysis of this kind of macro-economic policy can provides us with a better understanding of the preconditions for the effectiveness of the current COVID-19 flatten-the-curve policy. Policy in terms of shaping a phenomenon presumes that the phenomenon in question exists and has a certain shape that can be moulded. This (...) moulding, however, is not assumed to be performed directly on the shape itself, but by operating the mechanism that generates this shape, and which is also believed to exist. Therefore the precondition for this kind of policy is knowing the mechanism at work. The knowledge of this kind of intervention needed to change the shape in a desired direction, this knowledge about the mechanism, is assumed to be captured by a mathematical model on which several policies can be tried out to see which one leads to the desired shape. Mid-twentieth century macro-economic policy aimed at shaping the business cycle, and hence was based on the belief in the existence of a business cycle mechanism. With the loss of the belief in the existence of such a mechanism, the policy of shaping the business cycle disappeared with that too. This paper unpacks this history and shows how this policy based on mechanical reasoning, which originated in natural science, was gradually replaced by an approach that takes into account non-natural aspects of human behaviour. (shrink)

Zusammenfassung Vor dem Hintergrund steigender Erlöse in der Fußball-Bundesliga zeigt sich eine zunehmende Professionalisierung nicht nur bei einem Blick auf die Managementstrukturen der Vereine, sondern auch bei näherer Betrachtung der Gehaltsdeterminanten von Fußballspielern. Die Gehaltshöhe hängt unter anderem von der in der Bundesliga in der Vergangenheit gezeigten Leistung ab. Fraglich ist, wie sich die Höhe der Gehälter von Spielern ergibt, die neu in die Liga wechseln und bei deren Leistungsbewertung gewisse Informationsdefizite auf Seiten der Vereine vorliegen, und wie diese Informationsdefizite (...) ausgeglichen werden. Die Analyse der Marktwerte von 7.019 Spieler-Jahres-Beobachtungen zeigt, dass die Vereine recht gut in der Lage sind, die spätere Leistung ihrer Spieler einzuschätzen und die Marktwerte der Spieler entsprechend beurteilt werden. Wechseln Spieler aus einer anderen Liga in die Bundesliga, so dient die Liga ihrer letzten Karrierestation als Proxy für die später erwartete Leistung, und sie weisen in Abhängigkeit der Liga, in der sie in der Vorsaison gespielt haben, unterschiedliche Marktwerte auf, was gleichzeitig auf Unterschiede in den Gehältern schließen lässt. (shrink)