Lorazepam has been repeatedly shown to induce memory impairments. The effects of this benzodiazepine on the processes involved in the strategic regulation of memory accuracy have not as yet been explored. An experimental procedure that delineates the role of monitoring and control processes was used. Fifteen lorazepam and 15 placebo subjects were examined using a semantic memory task that combined both a forced- and a free-report option and a no-incentive and an incentive condition. Memory accuracy was lower in the lorazepam (...) than in the placebo group. Lorazepam impaired control sensitivity (the extent to which volunteering of answers is affected by the confidence judgments). While the absolute aspect of monitoring was impaired (calibration scores), both the discriminative aspect (the ability to distinguish between correct and incorrect answers) and the response criterion setting (the confidence threshold set for volunteering a report) were spared. The pharmacological dissociation between monitoring effectiveness and control sensitivity indicates that these two components involve distinct processes. (shrink)

Lorazepam has been repeatedly shown to induce memory impairments. The effects of this benzodiazepine on the processes involved in the strategic regulation of memory accuracy have not as yet been explored. An experimental procedure that delineates the role of monitoring and control processes was used. Fifteen lorazepam and 15 placebo subjects were examined using a semantic memory task that combined both a forced- and a free-report option and a no-incentive and an incentive condition. Memory accuracy was lower in the lorazepam (...) than in the placebo group. Lorazepam impaired control sensitivity . While the absolute aspect of monitoring was impaired , both the discriminative aspect and the response criterion setting were spared. The pharmacological dissociation between monitoring effectiveness and control sensitivity indicates that these two components involve distinct processes. (shrink)

An award-winning theoretical physicist and best-selling author of A Universe from Nothing traces the dramatic discovery of the counterintuitive world of reality, explaining how readers can shift their perspectives to gain greater understandings of our individual roles in the universe.

(2000). Ecological rationality and its contents. Thinking & Reasoning: Vol. 6, No. 4, pp. 375-384.

Pickering & Garrod's (P&G's) mechanistic theory of dialogue attempts to detail the psychological processes involved in communication that are lacking in Clark's theory. By relying on automatic priming and alignment processes, however, the theory falters when it comes to explaining much of dialogic interaction. We argue for the inclusion of less automatic, though not completely conscious and deliberate, processes to explain such phenomena.

We commend Redish et al. for the progress they have made in bringing a measure of theoretical order to the processes that underlie drug addiction. However, incorporating information about situations in which drug users do not exhibit faulty decision-making into the theory would greatly enhance its generality and practical value. This commentary draws attention to the relevant human substance abuse literature.

Our thesis is that proprioception is not a sixth sense distinct from the sense of touch, but a part of that tactile (or haptic) sense. The tactile sense is defined as the sense whose direct intentional objects are macroscopic mechanical properties. We first argue (against D. Armstrong, 1962; B. O'Shaughnessy 1989, 1995, 1998 and M. Martin, 1992, 1993,1995) that the two following claims are incompatible : (i) proprioception is a sense distinct from touch; (ii) touch is a bipolar modality, that (...) intrinsically has both a subjective-bodily pole and objective pole. We then argue that the bipolarity of touch should be preferred over the introduction of a sui generis sense of the body. We try to revive Aristotle suggestion according to which the body is the tactile medium (like the air for sight). Since this medium is constantly changing its shape, we need some specific channel of information about its state : proprioception, functionally defined, is that part of touch which informs us about the state of this changing tactile medium. Though muscular and articular receptors are usually dedicated to inform us about the mechanical properties of the tactile media, and the skin receptors about the mechanical properties of the tactile objects, this is not essentially so. In weighting or wielding experiments we access the weight of external objects even when skin sensitivity is absent; in prosthetic touch, the skin receptors play the role usually assigned to muscle and articular receptors, namely to inform us about the mechanical state of the tactile medium. So proprioception, anatomically defined, can play both the role of informing us about the tactile medium, or about the tactile objects. That other sensory modalities also rely on proprioceptive information should be understood in terms of cross-modal dependencies: of sight, hearing, smell, taste...on touch. (shrink)

There can be no doubt that discrimination based on sex, race, ethnicity, religion or beliefs should not be tolerated in academia. Surprisingly, however, in recent years, policies of Diversity, Inclusion and Equity (DIE), officially introduced to counteract discrimination, have increasingly led to quite the opposite result: the exclusion of individuals who do not share a radical 'woke' ideology on identity politics (feminism, other gender activisms, critical race theory, etc.), and to the suppression of the academic freedom to discuss such dogmas. (...) This subversion of academia — disguised Trojan-horse style as universal human rights advocacy — is unacceptable because academia must be politically neutral and protect freedom of speech, a cornerstone of professional scholarly activity without which universities as we know them will slowly but surely suffocate. Our purpose here is to put together some particularly illustrative cases of such repression in a single book, testifying to a ubiquitous trend within western culture, irreducible to a few isolated complaints. The essays contained here illustrate the abuse of power, censorship and witch-hunts at many universities and research centres in the name of DIE. List of coauthors in alphabetical order: Dorian Abbot, Tomonori Agoh, Gerhard Amendt, Ivar Arpi, David Benatar, Peter Boghossian, Civitas Research Team, David Díaz Pardo de Vera, Pedro Domingos, Janice Fiamengo, Étienne Forest, Jorge Gibert Galassi, Norman Goldstuck, José L. González Quirós, Lawrence M. Krauss, Patrick LaBelle, Martín López Corredoira, Heather Mac Donald, Martin Malmgren, Jordan Peterson, Constantin Polychronakos, Erik. J. Olsson, Philip C. Salzman, Alessandro Strumia, Tom Todd, Andrei Yafaev. (shrink)

This book deals with philosophical aspects regarding the perception of spatial relationships in two and three-dimensional art. It provides a structural understanding of how art is perceived within the space created by the artwork, and employs a mapping sentence and partial order mereology to model perceptual structure. It reviews the writing of philosophers such as Paul Crowther and art theorists such as Krauss to establish the need for this research. The ontological model established Paul Crowther is used to guide (...) an interactive account of his ontology in the interpretations of the perceptual process of three-dimensional abstract art to allow the formulation of a more comprehensive philosophical account. The book uniquely combines structuralist and post-structuralist approaches to artistic perception and understanding with a conceptual structure from facet theory, which is clarified with the help of a mapping sentence and partial order mereology. (shrink)

Jak i dlaczego powstał Wszechświat? Problem z naukowym wyjaśnieniem istnienia Wszechświata polega na tym, że zakłada ono pewną fizyczną przyczynę jego istnienia. Ale jakakolwiek fizyczna przyczyna Wszechświata musi być częścią Wszechświata, którego zaistnienie ma wyjaśnić. Z tego powodu każde czysto naukowe wyjaśnienie istnienia Wszechświata jest skazane na zapętlenie. Być może żadna teoria naukowa nie może przerzucić mostu pomiędzy absolutną nicością a istniejącym już Wszechświatem.Okazuje się jednak, że gdy metafizyczne pytanie typu: dlaczego istnieje Wszechświat? zamienimy na „bardziej naukowe”: w jaki sposób (...) powstał Wszechświat?, to mamy szansę na gruncie fizyki przedstawić współczesną wersję „historii” powstania Wszechświata. Kosmolog Lawrence M. Krauss twierdzi, że w tym celu wystarczy porzucić mętne – z punktu widzenia fizyki – pojęcie absolutnej nicości i za punkt wyjścia uznać fizyczną próżnię. Ponieważ – jak wynika z mechaniki kwantowej – kwantowa próżnia to dalece nie to samo co nicość metafizyczna, możliwe jest – w świetle naszej współczesnej wiedzy – powstanie Wszechświata z „niczego”. (shrink)

This paper defends hedonic intentionalism, the view that all pleasures, including bodily pleasures, are directed towards objects distinct from themselves. Brentano is the leading proponent of this view. My goal here is to disentangle his significant proposals from the more disputable ones so as to arrive at a hopefully promising version of hedonic intentionalism. I mainly focus on bodily pleasures, which constitute the main troublemakers for hedonic intentionalism. Section 1 introduces the problem raised by bodily pleasures for hedonic intentionalism and (...) some of the main reactions to it. Sections 2 and 3 rebut two main approaches equating bodily pleasures with non- intentional episodes. More precisely, section 2 argues that bodily pleasures cannot be purely non-intentional self-conscious feelings, by relying on Brentano’s objection to Hamilton’s theory of pleasure. Section 3 argues that bodily pleasures cannot be non-intentional sensory qualities by relying on Brentano’s objections to Stumpf’s theory of pleasure. Section 4 develops a brentanian view of the intentionality of bodily pleasures by claiming bodily pleasures are directed at a sui generis class of sensory qualities. Section 5 presents an objection to Brentano’s later theory of pleasure according to which all sensory pleasures are directed at sensing acts. (shrink)

On entend par survenance moral la thèse selon laquelle, nécessairement, si deux entités sont parfaitement similaires en ce qui concerne toutes leurs propriétés non-morales, elles sont parfaitement similaires en ce qui concerne leurs propriétés morales. En dépit de son apparente simplicité, cette définition pose de nombreux problèmes. Ainsi, alors que la survenance morale est souvent présentée comme l’une des rares thèses faisant consensus en philosophie, il s’avère à y regarder de près que son interprétation varie grandement selon les philosophes. Trois (...) questions, en particulier, demandent à être éclaircies, sur lesquelles nous nous concentrerons ici : 1. On fait souvent appel à la survenance dans le but d’expliquer les propriétés morales. Mais à strictement parler, la survenance ne revêt par elle-même aucun caractère explicatif : quelle relation la survenance morale entretient-elle avec la relation de fondation ou d’explication morale ? 2. On tient la survenance morale pour une thèse consensuelle, mais on s’accorde peu sur la base de survenance des valeurs morales6. D’aucuns la restreignent à des propriétés naturelles ; d’autres y incluent des propriétés non-naturelles, pour peu qu’elles ne soient pas normatives ; d’autres encore y incluent des propriétés normatives, pour peu qu’elles ne soient pas morales ; d’autres enfin y incluent les principes moraux eux-mêmes. Que recouvre exactement la base de survenance des propriétés morales ? La survenance est une thèse modale (« nécessairement... »). Mais quelle modalité entre-t-elle ici en jeu ? La nécessité qui sous-tend la survenance morale est-elle métaphysique, conceptuelle, normative...? (shrink)

Can one refute Berkeleyan phenomenalism by arguing that sensory objects seem mind-independent, and that, according to Berkeley, experience is to be taken at face value? Relying on Mackie’s recent discussion of the issue, I argue, first, that phenomenalism cannot be straightforwardly refuted by relying on perceptual or bodily experience of mind-independence together with the truthfulness of experience. However, I maintain, second that phenomenalism can be indirectly refuted by appealing to the bodily experience of resistance. Such experience presents us with the (...) causal activity of the resisting physical object. If experience is truthful, as the phenomenalist has it, physical objects are causally active. But then their effects no longer depend on our perceiving them, on pain of overdetermination. (shrink)

Almost all philosophers agree that a necessary condition on lying is that one says what one believes to be false. But, philosophers haven’t considered the possibility that the true requirement on lying concerns, rather, one’s degree-of-belief. Liars impose a risk on their audience. The greater the liar’s confidence that what she asserts is false, the greater the risk she’ll think she’s imposing on the dupe, and, therefore, the greater her blameworthiness. From this, I arrive at a dilemma: either the belief (...) requirement is wrong, or lying isn’t interesting. I suggest an alternative necessary condition for lying on a degree-of-belief framework. (shrink)

This paper defends the view that Newtonian forces are real, symmetrical and non-causal relations. First, I argue that Newtonian forces are real; second, that they are relations; third, that they are symmetrical relations; fourth, that they are not species of causation. The overall picture is anti-Humean to the extent that it defends the existence of forces as external relations irreducible to spatio-temporal ones, but is still compatible with Humean approaches to causation (and others) since it denies that forces are a (...) species of causation. (shrink)

Samuel Johnson claimed to have refuted Berkeley by kicking a stone. It is generally thought that Johnson misses the point of Berkeley's immaterialism for a rather obvious reason: Berkeley never denied that the stone feels solid, but only that the stone could exist independently of any mind. I argue that Johnson was on the right track. On my interpretation, Johnson’s idea is that because the stone feels to resist our effort, the stone seems to have causal powers. But if appearances (...) are to be taken at face value, as Berkeley insists, then the stone has causal powers. I argue that such causal powers threaten not only Berkeley’s view that only minds are active, but also, and more fundamentally, his central claim that sensible things depend on perception. (shrink)

This book reconstructs the rise and fall of Wilhelm Wundt’s fortunes, focusing for the first time on the role of Richard Avenarius as catalyst for the so-called “positivist repudiation of Wundt.” Krauss specifically looks at the progressive disavowal of Wundtian ideas in the world of scientific psychology, and especially by his former pupils. This book provides important historical context and a critical discussion of the current state of research, in addition to a detailed consideration of Wundt’s and Avenarius’ systems (...) of thought, as well as on their personal relationship. The author outlines the reception of Avenarius’ conceptions among Wundt’s pupils, such as Külpe, Münsterberg and Titchener, and among other psychologists of the time, such as Ward, James and Ebbinghaus. Finally, this book presents Wundt’s two-fold attempt to respond to the new trend through a criticism of the “materialistic” psychology, and a reformulation of his own ideas. (shrink)

This book offers an up-to-date insight into the early philosophical debate on Einsteinian relativity. The essays explore the reception and interpretation of Einstein’s ideas by some of the most important philosophical schools of the time, such as logical positivism (Reichenbach), neo-Kantianism (Cassirer, Natorp), critical realism (Sellars), and radical empiricism (Mach). The book is aimed at physicists and historians of science researching the epistemological implications of the theory of relativity, as well as to scholars in philosophy interested in understanding how leading (...) philosophical figures of the early twentieth century reacted to the relativistic revolution. (shrink)

What are economic exchanges? The received view has it that exchanges are mutual transfers of goods motivated by inverse valuations thereof. As a corollary, the standard approach treats exchanges of services as a subspecies of exchanges of goods. We raise two objections against this standard approach. First, it is incomplete, as it fails to take into account, among other things, the offers and acceptances that lie at the core of even the simplest cases of exchanges. Second, it ultimately fails to (...) generalize to exchanges of services, in which neither inverse preferences nor mutual transfers hold true. We propose an alternative definition of exchanges, which treats exchanges of goods as a special case of exchanges of services and which builds in offers and acceptances. According to this theory: (i) The valuations motivating exchanges are propositional and convergent rather than objectual and inverse; (ii) All exchanges of goods involve exchanges of services/actions, but not the reverse; (iii) Offers and acceptances, together with the contractual obligations and claims they bring about, lie at the heart of all cases of exchange. (shrink)

The goals of the study were to examine whether fundamentalism and authoritarianism could be distinguished by the Big Five factors of personality in American, Romanian and German samples, and to determine whether fundamentalism and authoritarianism could be distinguished by factor analysis in any of the three cultures. The results in all three cultures indicate that fundamentalism and authoritarianism have virtually identical personality correlates. In all three cultures, the two constructs were indistinguishable via exploratory factor analysis and could only be distinguished (...) via confirmatory factor analysis, although direction-of-wording effects dwarfed the differences between fundamentalism and authoritarianism. The findings suggest that researchers should view fundamentalism as religious authoritarianism, and should therefore be cautious when making inferences about religiosity from research on fundamentalism. (shrink)

Social phenomena—quite like mental states in the philosophy of mind—are often regarded as potential troublemakers from the start, particularly if they are approached with certain explanatory commitments, such as naturalism or social individualism, already in place. In this paper, we argue that such explanatory constraints should be at least initially bracketed if we are to arrive at an adequate non-biased description of social phenomena. Legitimate explanatory projects, or so we maintain, such as those of making the social world fit within (...) the natural world with the help of, e.g., collective intentionality, social individualism, and the like, should neither exclude nor influence the prior description of social phenomena. Just as we need a description of the mental that is not biased, for example, by (anti)physicalist constraints, we need a description of the social that is not biased, for example, by (anti)individualist or (anti)naturalist commitments. Descriptive social ontology, as we shall conceive of it, is not incompatible with the adoption of explanatory frameworks in social ontology; rather, the descriptive task, according to our conception, ought to be recognized as prior to the explanatory project in the order of inquiry. If social phenomena are, for example, to be reduced to nonsocial (e.g., psychological or physical) phenomena, we need first to understand clearly what the social candidates for the reduction in question are. While such descriptive or naive approaches have been influential in general metaphysics (see Fine 2017), they have so far not been prominent in analytic social ontology (though things are different outside of analytic philosophy, see esp. Reinach (1913). In what follows, we shall outline the contours of a descriptive approach by arguing, first, that description and explanation need to be distinguished as two distinct ways of engaging with social phenomena. Secondly, we defend the claim that the descriptive project ought to be regarded as prior to the explanatory project in the order of inquiry. We begin, in Section 2, by considering two different ways of engaging with mental phenomena: a descriptive approach taken by descriptive psychology and an explanatory approach utilized in analytic philosophy of mind. We take these two ways of approaching the study of the mind to be analogous to the distinction we want to draw in social ontology between a descriptive and an explanatory approach to the study of social phenomena. We consider next, in Section 3, how our approach compares to neighboring perspectives that are familiar to us from general metaphysics and philosophy more broadly, such as Aristotle’s emphasis on “saving the appearances”, Strawson’s distinction between descriptive and revisionary metaphysics, as well as Fine’s contrast between na¨ive and foundational metaphysics. In Section 4, we apply the proposed descriptive/explanatory distinction to the domain of social ontology and argue that descriptive social ontology ought to take precedence in the order of inquiry over explanatory social ontology. Finally, in Section 5, we consider and respond to several objections to which our account might seem to be susceptible. (shrink)

In this paper, we argue that, in order to account for the apparently substantive nature of definitional disputes, a commitment to what we call ‘Socratic essentialism’ is needed. We defend Socratic essentialism against a prominent neo-Carnapian challenge according to which apparently substantive definitional disputes always in some way trace back to disagreements over how expressions belonging to a particular language or concepts belonging to a certain conceptual scheme are properly used. Socratic essentialism, we argue, is not threatened by the possibility (...) that some apparently substantive definitional disputes may turn out to be verbal or conceptual, since this pluralist strategy, in our view, requires a commitment to more, rather than fewer, essences. What is more, a deflationary, metaphysically ‘light-weight’ construal of the essence-ascriptions in question leads to a peculiar conception of the pursuit of metaphysicians as behaving like deceptive (or self-deceived) grammarians pretending to be scientists. Moreover, this deflationary attitude, we argue, spreads beyond metaphysics and philosophy more broadly to apparently substantive definitional disputes in the sciences as well as other in other disciplines, such as art criticism. (shrink)

Many scientists routinely generalize from study samples to larger populations. It is commonly assumed that this cognitive process of scientific induction is a voluntary inference in which researchers assess the generalizability of their data and then draw conclusions accordingly. We challenge this view and argue for a novel account. The account describes scientific induction as involving by default a generalization bias that operates automatically and frequently leads researchers to unintentionally generalize their findings without sufficient evidence. The result is unwarranted, overgeneralized (...) conclusions. We support this account of scientific induction by integrating a range of disparate findings from across the cognitive sciences that have until now not been connected to research on the nature of scientific induction. The view that scientific induction involves by default a generalization bias calls for a revision of the current thinking about scientific induction and highlights an overlooked cause of the replication crisis in the sciences. Commonly proposed interventions to tackle scientific overgeneralizations that may feed into this crisis need to be supplemented with cognitive debiasing strategies against generalization bias to most effectively improve science. (shrink)

To be optimistic, it is standardly assumed, is to have positive expectations. I here argue that this definition is correct but captures only one variety of optimism – here called factual optimism. It leaves out two other important varieties of optimism. The first – focal optimism – corresponds to the idea of seeing the glass half full. The second – axiological optimism – consists in the view that good is stronger than bad. Those three varieties of optimism are irreducible to (...) each other and do not belong to a common kind. I define each of these, characterize their respective correctness conditions, and contrast hope with optimism. (shrink)

This chapter has three sections. The first introduces Brentano’s view of sensations by presenting the intentional features of sensations irreducible to features of the sensory objects. The second presents Brentano’s view of sensory objects —which include sensory qualities— and the features of sensations that such objects allow to explain, such as their intensity. The third section presents Brentano’s approach to sensory pleasures and pains, which combines both appeal to specific modes of reference and to specific sensory qualities.

Touch seems to enjoy some epistemic advantage over the other senses when it comes to attest to the reality of external objects. The question is not whether only what appears in tactile experiences is real. It is that only whether appears in tactile experiences feels real to the subject. In this chapter we first clarify how exactly the rather vague idea of an epistemic advantage of touch over the other senses should be interpreted. We then defend a “muscular thesis”, to (...) the effect that only the experience of resistance to our motor efforts, as it arises in effortful touch, presents us with the independent existence of some causally empowered object. We finally consider whether this muscular thesis applies to the perception of our own body. (shrink)

L'enseignement viennois de Brentano a faconne les philosophies exactes du XXe siecle, au travers de ses eleves Husserl, Meinong, Twardowski, Stumpf, Ehrenfels ou Marty. Si la theorie de l'intentionnalite, l'ontologie et la logique de Brentano ont fait l'objet de discussions approfondies, son anatomie d'une grande variete d'actes mentaux - choisir, hair, juger, percevoir, preferer, remarquer, savoir, sentir, souffrir, toucher, voir - demeure encore trop ignoree. Ce livre est consacre a cette analyse descriptive minutieuse et foisonnante. Outre son interet historique, celle-ci (...) permet de renouveler bon nombre de debats contemporains en philosophie des emotions, en epistemologie, en philosophie du langage, ainsi qu'en philosophie de l'esprit. (shrink)

I argue that pleasure is not only necessarily good, but also essentially so. Part of the nature of pleasure is to be (personally, finally) good.

Effort and the feeling of effort play important roles in many theoretical discussions, from perception to self-control and free will, from the nature of ownership to the nature of desert and achievement. A crucial, overlooked distinction within the philosophical and scientific literatures is the distinction between theories that seek to explain effort and theories that seek to explain the feeling of effort. Lacking a clear distinction between these two phenomena makes the literature hard to navigate. To advance in the unification (...) and development of this area, this article provides an overview of the main theories of the nature of effort and the nature of the feeling of effort, and then discusses how efforts and their feelings are related. Two key takeaways emerge. First, there is widespread agreement that efforts are goal-directed actions. Second, one of the main philosophical issues to be decided is whether feelings of effort should be defined by reference to efforts (effort-first approach), or whether efforts are defined by reference to the feeling of effort (feeling-first approach). (shrink)

We review the history of the philosophy of fondue since Aristotle so as to arrive at the formulation of the paradox of Swiss fondue. Either the wine and the cheese cease to exist (Buridan), but then the fondue is not really a mixture of wine and cheese. Or the wine and the cheese continue to exist. If they do, then either they continue to exist in different places (the chemists), but then a fondue can never be perfectly homogenous (it is (...) a French fondue). Or the wine and the cheese continue to exist in the same place (the Stoïcs), but then wine and cheese have to be, oddly, penetrable and spatially expansible. Aristote attempted to solve this paradox by arguing that the cheese and wine continue to exist, but only potentially in the fondue. We sketch an alternative answer. The wine and the cheese continue to exist, but only non-spatially in the fondue. Wine and cheese, once mixed, become non-spatial constituents of the fondue, a bit like character traits are non-spatial constituents of persons. The wine and the cheese are in the fondue, but only the fondue is there in the fondue pot. (shrink)

Evaluative theories of emotions purport to shed light on the nature of emotions by appealing to values. Three kinds of evaluative theories of emotions dominate the recent literature: the judgment theory equates emotions with value judgments; the perceptual theory equates emotions with perceptions of values, and the attitudinal theory equates emotions with evaluative attitudes. This paper defends a fourth kind of evaluative theory of emotions, mostly neglected so far: the reactive theory. Reactive theories claim that emotions are attitudes which arise (...) in reaction to perceptions of value. (shrink)

This chapter defends an axiological theory of pain according to which pains are bodily episodes that are bad in some way. Section 1 introduces two standard assumptions about pain that the axiological theory constitutively rejects: (i) that pains are essentially tied to consciousness and (ii) that pains are not essentially tied to badness. Section 2 presents the axiological theory by contrast to these and provides a preliminary defense of it. Section 3 introduces the paradox of pain and argues that since (...) the axiological theory takes the location of pain at face value, it needs to grapple with the privacy, self-intimacy and incorrigibility of pain. Sections 4, 5 and 6 explain how the axiological theory may deal with each of these. (shrink)

For more than 20 years, research has proven the beneficial effect of natural frequencies when it comes to solving Bayesian reasoning tasks (Gigerenzer & Hoffrage, 1995). In a recent meta-analysis, McDowell & Jacobs (2017) showed that presenting a task in natural frequency format increases performance rates to 24% compared to only 4% when the same task is presented in probability format. Nevertheless, on average three quarters of participants in their meta-analysis failed to obtain the correct solution for such a task (...) in frequency format. In this paper, we present an empirical study on what participants typically do wrong when confronted with natural frequencies. We found that many of them did not actually use natural frequencies for their calculations, but translated them back into complicated probabilities instead. This switch from the intuitive presentation format to a less intuitive calculation format will be discussed within the framework of psychological theories (e.g., the Einstellung effect). (shrink)

In “Toward an Ontology of Commercial Exchange” [11], we proposed human readable definitions for terms that are central to an ontology of commercial exchange. This paper furthers that project in two ways. First, the definitions have been modified to be compatible with the Common Core Ontologies (CCO). CCO is used in a wide variety of domains including the industrial and military domains. Having a commerce ontology compatible with CCO allows data about the exchange of goods relevant to those domains to (...) be tagged with compatible ontologies. Second, we propose preliminary formalizations of these definitions, with the aim of informing the creation of an ontology which can be used to assist in reasoning over businessrelated data. (shrink)

In teaching statistics in secondary schools and at university, two visualizations are primarily used when situations with two dichotomous characteristics are represented: 2×2 tables and tree diagrams. Both visualizations can be depicted either with probabilities or with frequencies. Visualizations with frequencies have been shown to help students significantly more in Bayesian reasoning problems than probability visualizations do. Because tree diagrams or double-trees (which are largely unknown in school) are node-branch-structures, these two visualizations (compared to the 2×2 table) can even simultaneously (...) display probabilities on branches and frequencies inside the nodes. This is a teaching advantage as it allows the frequency concept to be used to better understand probabilities. However, 2×2 tables and (double-) trees have a decisive disadvantage: While joint probabilities (e.g., P(AB)) are represented in 2×2 tables but no conditional probabilities (e.g., P(A|B)), it is exactly the other way around with (double-) trees. Therefore, a visualization that is equally suitable for the representation of joint probabilities and conditional probabilities is desirable. In this article, we present a new visualization—the frequency net—in which all absolute frequencies and all types of probabilities can be depicted. In addition to a detailed theoretical analysis of the frequency net, we report the results of a study with 249 university students that shows that “net diagrams” can improve reasoning without previous instruction to a similar extent as 2×2 tables and double-trees. Regarding questions about conditional probabilities, frequency visualizations (2×2 table, double-tree, or net diagram with natural frequencies) are consistently superior to probability visualizations. The frequency net performs as well as the frequency double-tree. Only the 2×2 table with frequencies—the only visualization that participants were already familiar with —led to higher performance rates. If, on the other hand, a question about a joint probability had to be answered, all implemented visualizations clearly supported participants’ performance, and no uniform format effect becomes visible. Participants reached the highest performance in the versions with probability 2×2 tables and probability net diagrams. Furthermore, after conducting a detailed error analysis, we report interesting error shifts between the two information formats and the different visualizations and give recommendations for teaching probability. (shrink)

This paper defends a realist account of the composition of Newtonian forces, dubbed ‘residualism’. According to residualism, the resultant force acting on a body is identical to the component forces acting on it that do not prevent each other from bringing about its acceleration. Several reasons to favor residualism over alternative accounts of the composition of forces are advanced. (i) Residualism reconciles realism about component forces with realism about resultant forces while avoiding any threat of causal overdetermination. (ii) Residualism provides (...) a systematic semantics for the term ‘force’ within Newtonian mechanics. (iii) Residualism allows us to precisely apportion the causal responsibility of each component force in the ensuing acceleration. (iv) Residualism handles special cases such as null forces, single forces, and antagonistic forces in a natural way. (v) Residualism provides a neat picture of the causal powers of forces: each force essentially has two causal powers⎯the power to bring about accelerations (sometimes together with other co-directionnal forces) and the power to prevent other forces from doing so⎯exactly one of which is manifested at a time. (vi) Residualism avoids commitment to unobservable effects of forces: forces cause either stresses (tensile or compressive) or accelerations. (shrink)