I argue that thought experiments are a form of experimental reasoning similar to real experiments. They require the same ability to participate by following a narrative as real experiments do. Participation depends in turn on using what we already know to visualize, manipulate and understand what is unfamiliar or problematic. I defend the claim that visualization requires embodiment by an example which shows how tacit understanding of the properties of represented objects and relations enables us to work out how such (...) objects might behave in a postulated world. This knowledge is that of embodied agents. That thought experiments require embodied participation is what makes them experiments rather than arguments. Unlike real experiments, from which ordinary perception has been displaced by instrumentation, thought experiments still appeal to relatively unmediated common sense, even when their purpose is to criticize or subvert common sense notions. (shrink)

The sciences use a wide range of visual devices, practices, and imaging technologies. This diversity points to an important repertoire of visual methods that scientists use to adapt representations to meet the varied demands that their work places on cognitive processes. This paper identifies key features of the use of visualization in a range of scientific domains and considers the implications of this repertoire for understanding scientists as cognitive agents.

Syntactic and structural models specify relationships between their constituents but cannot show what outcomes their interaction would produce over time in the world. Simulation consists in iterating the states of a model, so as to produce behaviour over a period of simulated time. Iteration enables us to trace the implications and outcomes of inference rules and other assumptions implemented in the models that make up a theory. We apply this method to experiments which we treat as models of the particular (...) aspects of reality they are designed to investigate. Scientific experiments are constantly designed and re-designed in the context of implementation and use. They mediate between theoretical understanding and the practicalities of engaging with the empirical and social world. In order to model experiments we need to identify and represent features that all experiments have in common. We treat these features as parameters of a general model of experiment so that by varying these parameters different types of experiment can be modelled. (shrink)

: Faraday is often described as an experimentalist, but his work is a dialectical interplay of concrete objects, visual images, abstract, theoretically-informed visual models and metaphysical precepts. From phenomena described in terms of patterns formed by lines of force he created a general explanation of space-filling systems of force which obey both empirical laws and principles of conservation and economy. I argue that Faraday's articulation of situated experience via visual models into a theory capable of verbal expression owed much to (...) his strategy of moving—via conjectural visual models—between the phenomenology of particulars (often displayed as patterns) and the general features of dynamical phenomena which he depicted as structures. (shrink)

Case studies of diverse scientific fields show how scientists use a range of resources to generate new interpretative models and to establish their plausibility as explanations of a domain. They accomplish this by manipulating imagistic representations in particular ways. I show that scientists in different domains use the same basic transformations. Common features of these transformations indicate that general cognitive strategies of interpretation, simplification, elaboration, and argumentation are at work. Social and historical studies of science emphasize the diversity of local (...) contexts of practice. However, the existence of common strategies shows that this diversity masks an important repertoire of cognitive strategies. Scientists use this repertoire to adapt their representations to meet the cognitive demands of different contexts of practice. This paper considers the implications of this finding for the notion of scientists as cognitive agents in distributed knowledge-producing systems. (shrink)

We argue that abduction does not work in isolation from other inference mechanisms and illustrate this through an inference scheme designed to evaluate multiple hypotheses. We use game theory to relate the abductive system to actions that produce new information. To enable evaluation of the implications of this approach we have implemented the procedures used to calculate the impact of new information in a computer model. Experiments with this model display a number of features of collective belief-revision leading to consensus-formation, (...) such as the influence of bias and prejudice. The scheme of inferential calculations invokes a Peircian concept of ‘belief’ as the propensity to choose a particular course of action. (shrink)

We present an exactly soluble electron trajectory that permits an analysis of the soft (deep infrared) radiation emitted, the existence of which has been experimentally observed during beta decay via lowest order inner bremsstrahlung. Our treatment also predicts the time evolution and temperature of the emission, and possibly the spectrum, by analogy with the closely related phenomenon of the dynamic Casimir effect.

There have been many images of experiment. The contemplative narratives of Aristotle served to illustrate hypotheses and arguments. There was no expectation that they be performed. Even in Galileo's dialogues, the distinction between real experiments and imaginary ones is not sharp (see galileo). During the seventeenth century, performance and public description became essential to the probative power of experiment. These made its methods and procedures transparent, allowing any reader of the narrative to be a virtual witness of an active demonstration (...) (Shapin and Schaffer 1985, pp. 22–79). Thus, by the end of the scientific revolution, illustrative narratives were distinguished from public accounts of experiment as the disciplined, systematic study of phenomena. Eventually this made the efficacy of thought experiments problematic (see Kuhn 1977, pp. 241–2, and thought experiments). As a source of experience of realms previously beyond the reach of the senses, real‐world experiment contributed to the rise of objective scientific knowledge. Harvey, Galileo, Hooks, Boyle, Newton, and other proponents of experimental natural philosophy established an important new mode of argumentation. (shrink)

We generally agree with Burt's thesis. However, we note that the author did not discuss epigenetics, the study of how the environment can alter gene structure and function. Given epigenetic mechanisms, the utility of polygenic risk scores (PRS) is limited in studies of development and mental illness. Finally, in this commentary we expand upon the risks of reliance upon PRSs.

The Phillips & Silverstein model of NMDA-mediated coordination deficits provides a useful heuristic for the study of schizophrenic cognition. However, the model does not specifically account for the development of schizophrenia-spectrum disorders. The P&S model is compared to Meehl's seminal model of schizotaxia, schizotypy, and schizophrenia, as well as the model of schizophrenic cognitive dysfunction posited by McCarley and colleagues.

The Findlay & Walker model of saccade generation does not appear to account fully for saccadic performance deficits observed in schizophrenia patients. It would be enhanced by inclusion of a frontally mediated, central executive function system. A review of schizophrenia patients' antisaccade task deficits provides an example of the role of higher cortical functioning in saccade generation.

Bioethicists teaching and writing about the uses of prenatal genetic testing sometimes use “difficult cases” in which people with a disability want to test and select for the presence of their disability. Such cases challenge our stereotypes but also play into them.

The Anticipatory and Consummatory Interpersonal Pleasure Scale is a psychometric instrument that has been used to indirectly measure social anhedonia in many cross-cultural contexts, such as in Western, European, Eastern, and Israeli samples. However, little is known about the psychometric properties of the ACIPS in Korean samples. The primary goal of this study was to validate the Korean version of the ACIPS among non-help-seeking individuals. The sample consisted of 307 adult individuals who had no current or prior psychiatric history. Participants (...) were administered the ACIPS, along with the Behavioral Inhibition and Behavioral Activation Scales and Beck Depression Inventory. We examined the association of the total ACIPS scores with the other measures. The ACIPS showed good internal consistency. We also explored the factor structure of the Korean translation of the ACIPS using principal component analysis with Promax rotation and Kaiser normalization. Factor analysis yielded a three-factor structure that accounted for 58.8% of the variance. The three-factor model included the following subdomains: interactions involving close relationships, casual interactions, and interactions involving family members. Total BAS and BIS scores were significantly associated with total ACIPS scores, while BDI scores were inversely associated with total ACIPS scores. The current research indicates that the Korean version of the ACIPS is a useful and valid scale. Future directions include using the Korean translation of the ACIPS to elucidate the varying degrees of hedonic capacity in psychiatric patients. (shrink)

The ipsilesional arm of stroke patients often has functionally limiting deficits in motor control and dexterity that depend on the side of the brain that is lesioned and that increase with the severity of paretic arm impairment. However, remediation of the ipsilesional arm has yet to be integrated into the usual standard of care for upper limb rehabilitation in stroke, largely due to a lack of translational research examining the effects of ipsilesional-arm intervention. We now ask whether ipsilesional-arm training, tailored (...) to the hemisphere-specific nature of ipsilesional-arm motor deficits in participants with moderate to severe contralesional paresis, improves ipsilesional arm performance and generalizes to improve functional independence. We assessed the effects of this intervention on ipsilesional arm unilateral performance [Jebsen–Taylor Hand Function Test ], ipsilesional grip strength, contralesional arm impairment level [Fugl–Meyer Assessment ], and functional independence [Functional independence measure ]. Intervention occurred over a 3 week period for 1.5 h/session, three times each week. All sessions included virtual reality tasks that targeted the specific motor control deficits associated with either left or right hemisphere damage, followed by graded dexterity training in real-world tasks. We also exposed participants to 3 weeks of sham training to control for the non-specific effects of therapy visits and interactions. We conducted five test-sessions: two pre-tests and three post-tests. Our results indicate substantial improvements in the less-impaired arm performance, without detriment to the paretic arm that transferred to improved functional independence in all three posttests, indicating durability of training effects for at least 3 weeks. We provide evidence for establishing the basis of a rehabilitation approach that includes evaluation and remediation of the ipsilesional arm in moderately to severely impaired stroke survivors. This study was originally a crossover design; however, we were unable to complete the second arm of the study due to the COVID-19 pandemic. We report the results from the first arm of the planned design as a longitudinal study. (shrink)

A hippocampal patient is described who shows preserved item recognition and simple recognition-based recollection but impaired recall and associative recognition. These data and other evidence suggest that contrary to Aggleton & Brown's target article, Papez circuit damage impairs only complex item-item-context recollection. A patient with perirhinal cortex damage and a delayed global memory deficit, apparently inconsistent with A&B's framework, is also described.

_John Dewey and Continental Philosophy_ provides a rich sampling of exchanges that could have taken place long ago between the traditions of American pragmatism and continental philosophy had the lines of communication been more open between Dewey and his European contemporaries. Since they were not, Paul Fairfield and thirteen of his colleagues seek to remedy the situation by bringing the philosophy of Dewey into conversation with several currents in continental philosophical thought, from post-Kantian idealism and the work of Friedrich Nietzsche (...) to twentieth-century phenomenology, hermeneutics, and poststructuralism. This unique volume includes discussions comparing and contrasting Dewey with the German philosophers G. W. F. Hegel, Friedrich Nietzsche, Martin Heidegger, and Hans-Georg Gadamer on such topics as phenomenology, naturalism, organicism, contextualism, and poetry. Others investigate a series of connections between Dewey and contemporary French philosophy, including the notions of subjectivity, education, and the critique of modernity in Michel Foucault; language and politics in Jacques Derrida; and the concept of experience in Gilles Deleuze. Also discussed is the question of whether we can identify traces of _Bildung_ in Dewey’s writings on education, and pragmatism’s complex relation to twentieth-century phenomenology and hermeneutics, including the problematic question of whether Heidegger was a pragmatist in any meaningful sense. Presented in intriguing pairings, these thirteen essays offer different approaches to the material that will leave readers with much to deliberate. _ John Dewey and Continental Philosophy_ demonstrates some of the many connections and opportunities for cross-traditional thinking that have long existed between Dewey and continental thought, but have been under-explored. The intersection presented here between Dewey’s pragmatism and the European traditions makes a significant contribution to continental and American philosophy and will spur new and important developments in the American philosophical debate. (shrink)

The separation of biomedical and psychosocial approaches to mental illness has hampered both research and treatment because only a fully integrated view of life permits a person to develop wisdom and well-being. In this long-awaited work, psychiatrist Robert Cloninger argues that all persons have spontaneous needs for happiness, self-understanding, and love, and he describes a way toward achieving psychological coherence that satisfies these basic human needs. The novel synthesis that he provides is based on the latest findings and concepts in (...) neuroscience, genetics, long-term biopsychosocial research, and complex networks, combined with a reliable, quantitative way of measuring human thought, social relationships, and creativity. (shrink)

Coady explores the challenges that morality poses to politics. He confronts the complex intellectual tradition known as realism, which seems to deny any relevance of morality to politics, especially international politics. He argues that, although realism has many serious faults, it has lessons to teach us: in particular, it cautions us against the dangers of moralism in thinking about politics and particularly foreign affairs. Morality must not be confused with moralism: Coady characterizes various forms of moralism and sketches their distorting (...) influence on a realistic political morality. He seeks to restore the concept of ideals to an important place in philosophical discussion, and to give it a particular pertinence in the discussion of politics. He deals with the fashionable idea of "dirty hands," according to which good politics will necessarily involve some degree of moral taint or corruption. Finally, he examines the controversial issue of the role of lying and deception in politics. Along the way Coady offers illuminating discussion of historical and current political controversies. This lucid book will provoke and stimulate anyone interested in the interface of morality and politics. (shrink)

In his celebrated masterpiece, Symposium, Plato imagines a high-society dinner-party in Athens in 416 BC at which the guests - including the comic poet Aristophanes and, of course, Plato's mentor Socrates - each deliver a short speech in praise of love. The sequence of dazzling speeches culminates in Socrates' famous account of the views of Diotima, a prophetess who taught him that love is our means of trying to attain goodness. And then into the party bursts the drunken Alcibiades, the (...) most popular and notorious Athenian of the time, who insists on praising Socrates himself rather than love, and gives us a brilliant sketch of this enigmatic character. The power, humour, and pathos of Plato's creation engages the reader on every page. This new translation is complemented by full explanatory notes and an illuminating introduction. (shrink)

Out of the ferment of recent debates about the intellectual virtues, Roberts and Wood have developed an approach they call 'regulative epistemology'. This is partly a return to classical and medieval traditions, partly in the spirit of Locke's and Descartes's concern for intellectual formation, partly an exploration of connections between epistemology and ethics, and partly an approach that has never been tried before. Standing on the shoulders of recent epistemologists - including William Alston, Alvin Plantinga, Ernest Sosa, and Linda Zagzebski (...) - Roberts and Wood pursue epistemological questions by looking closely and deeply at particular traits of intellectual character such as love of knowledge, intellectual autonomy, intellectual generosity, and intellectual humility. Central to their vision is an account of intellectual goods that includes not just knowledge as properly grounded belief, but understanding and personal acquaintance, acquired and shared through the many social practices of actual intellectual life. This approach to intellectual virtue infuses the discipline of epistemology with new life, and makes it interesting to people outside the circle of professional epistemologists. It is epistemology for the whole intellectual community, as Roberts and Wood carefully sketch the ways in which virtues that would have been categorized earlier as moral make for agents who can better acquire, refine, and communicate important kinds of knowledge. (shrink)

This volume contains C. D. Broad's Cambridge lectures on Ethics. Broad gave a course of lectures on the subject, intended primarily for Part I of the Moral Sciences Tripos, every academic year from 1933 - 34 up to and in cluding 1952 - 53 (except that he did not lecture on Ethics in 1935 - 36). The course however was frequently revised, and the present version is es sentially that which he gave in 1952 - 53. Broad always wrote out (...) his lectures fully beforehand, and the manuscript on Ethics, although full of revisions, is in a reasonably good state. But his handwriting is small and close and in places difficult to decipher. I therefore fear that some words may have been misread. There was an additional complication. In the summer of 1953 Broad revised and enlarged two sections of the course, namely the section on "Moore's theory" and that on "Naturalistic theories" (both sections occur in Chapter 4). The revised version of the section on Moore is undoubtedly superior to the earlier version, and I have therefore included it. But in my opinion this is not true of the new version of the section on naturalistic theories: although more comprehensive than the earlier version, it is not only repetitive in itself, but also repeats, sometimes almost verbatim, passages which occur elsewhere in the lectures. In brief, the new version is not fully integrated with the rest of the course. (shrink)

Kengo Miyazono, in his work Delusions and Beliefs, defends a teleo-functional account of delusions. In my contribution to this symposium, I question one of Miyazono’s motivations for appealing to teleo-functionalism over its main rival, dry-functionalism. Miyazono suggests that teleo-functionalism, unlike dry-functionalism, can account for the compatibility of the theses (i) that delusions are genuine doxastic states (doxasticism about delusions) and (ii) that delusions do not perform the typical causal roles of beliefs (the causal difference thesis). I argue, however, that there (...) are also ways for dry-functionalism to account for this compatibility. If what I have to say is correct, then Miyazono is perhaps too hasty—at least in one important respect—to opt for teleo-functionalism over dry-functionalism. Dry-functionalism has an equally good chance of satisfying some of Miyazono’s explanatory goals. (shrink)

A philosophical essay under this title faces severe rhetorical challenges. New accounts of the good life regularly and rapidly turn out to be variations of old ones, subject to a predictable range of decisive objections. Attempts to meet those objections with improved accounts regularly and rapidly lead to a familiar impasse — that while a life of contemplation, or epicurean contentment, or stoic indifference, or religious ecstasy, or creative rebellion, or self-actualization, or many another thing might count as a (...) good life, none of them can plausibly be identified with the good life, or the best life. Given the long history of that impasse, it seems futile to offer yet another candidate for the genus “good life” as if that candidate might be new, or philosophically defensible. And given the weariness, irony, and self-deprecation expected of a philosopher in such an impasse, it is difficult for any substantive proposal on this topic to avoid seeming pretentious. (shrink)

This book is an exploration of the epistemological, metaphysical, and psychological foundations of the Nicomachean Ethics. In a striking reversal of current orthodoxy, Reeve argues that scientific knowledge (episteme) is possible in ethics, that dialectic and understanding (nous) play essentially the same role in ethics as in an Aristotelian science, and that the distinctive role of practical wisdom (phronesis) is to use the knowledge of universals provided by science, dialectic, and understanding so as to best promote happiness (eudaimonia) in particular (...) circumstances and to ensure a happy life. Turning to happiness itself, Reeves develops a new account of Aristotle's views on ends and functions, exposing their twofold nature. He argues that the activation of theoretical wisdom is primary happiness, and that the activation of practical wisdom--when it is for the sake of primary happiness--is happiness of a secondary kind. He concludes with an account of the virtues of character, external goods, and friends, and their place in the happy life. (shrink)