Naturalistic Responses Research Articles

Using worker's naturalistic response to determine and analyze work zone crashes in the presence of work zone intrusion alert systems

Work zone Intrusion Alert Systems (WZIAS) are alert mechanisms that detect and alert workers of vehicles intruding into a work zone. These systems pre-dominantly employ two components-sensors placed near the work zone perimeter that detect intrusions, and alarms placed closed to or carried by the workers that alerts them. This study investigates the association between layout of these components for three WZIAS on work zone crashes based on worker reaction. Also, the key determinants of work zone crashes in presence of the WZIAS is identified using survival analysis. The ideal deployment strategy and use case scenarios for the three WZIAS is presented based on the findings of the study. The systems were subjected to rigorous testing that emulated intrusions to record worker reaction and determine occurrence of crashes. Analysis of results indicate that the key determinants of work zone crashes are speed of the intruding vehicle, distance between the sensor and worker, and accuracy of a system in detecting intrusions and alerting workers. Results from field experiments suggest that identification of appropriate use cases for WZIAS is necessary to ensure they work effectively. Based on the findings from this study it is suggested that current guidelines on work zones be modified to standardize WZIAS setup.

Tablet Technology for Writing and Drawing during Functional Magnetic Resonance Imaging: A Review.

Functional magnetic resonance imaging (fMRI) is a powerful modality to study brain activity. To approximate naturalistic writing and drawing behaviours inside the scanner, many fMRI-compatible tablet technologies have been developed. The digitizing feature of the tablets also allows examination of behavioural kinematics with greater detail than using paper. With enhanced ecological validity, tablet devices have advanced the fields of neuropsychological tests, neurosurgery, and neurolinguistics. Specifically, tablet devices have been used to adopt many traditional paper-based writing and drawing neuropsychological tests for fMRI. In functional neurosurgery, tablet technologies have enabled intra-operative brain mapping during awake craniotomy in brain tumour patients, as well as quantitative tremor assessment for treatment outcome monitoring. Tablet devices also play an important role in identifying the neural correlates of writing in the healthy and diseased brain. The fMRI-compatible tablets provide an excellent platform to support naturalistic motor responses and examine detailed behavioural kinematics.

Response and Side Effects Using Stimulant Medication in Older Adults With ADHD: An Observational Archive Study

Objective: To examine the naturalistic response to and cardiovascular side effects of stimulant medication in older adults with ADHD. Methods: Electronic Health Record (EHR) data of adult patients with ADHD (≥55 years) at the specialized PsyQ outpatient clinic for adult ADHD (n = 113, 55-79 years) were collected. Response, cardiovascular status, side effects, and provided medical care before and after the first ADHD medication dose have been recorded. Results: A total of 65% of the patients reported positive response to the medication, and 42% of the patients quit their medication due to side effects or nonresponse. There was a small but significant decrease in weight and increase in heart rate before and after methylphenidate use. Conclusion: Our results indicate that the use of stimulants may be a relatively safe and effective treatment for older adults with ADHD, under the condition that the cardiovascular parameters are monitored before and during pharmacological treatment. Randomized controlled trials (RCTs) are needed to confirm these findings.

A naturalist response to Kingma's critique of naturalist accounts of disease.

Elselijn Kingma maintains that Christopher Boorse and other naturalists in the philosophy of medicine cannot deliver the value-free account of disease that they promise. Even if disease is understood as dysfunction and that notion can be applied in a value-free manner, values still manifest themselves in the justification for picking one particular operationalization of dysfunction over a number of competing alternatives. Disease determinations depend upon comparisons within a reference class vis-à-vis reaching organism goals. Boorse considers reference classes for a species to consist in the properties of age and sex and organism goals to comprise survival and reproduction. Kingma suggests that naturalists are influenced by value judgments and may rely upon implicit assumptions about disease in their choice of reference classes and goals to determine which conditions are diseased. I argue that she is wrong to claimthat these choices cannot be defended without arguing in a circular manner or making certain arbitrary or value-driven judgments.

Rhythms and Drives: Quantal Ontology in Bergson’s and Nietzsche’s Naturalism

Abstract In this article, I draw attention to some important points of intersection in the work of Henri Bergson and Friedrich Nietzsche. In particular, I focus on the overlapping nature of their naturalisms. This proves enlightening for an overall appreciation of their respective philosophical projects but also allows those projects to be inscribed within a broader set of naturalistic traditions to which I think they contribute in interesting ways. I begin by assessing how Bergson’s and Nietzsche’s general problematics are shaped by the antinaturalistic character of their targets, more specifically the appeals to the immobile and the unconditional that they expose in their critical approaches. I move on to examine the core components of their naturalistic responses, highlighting how both thinkers extend introspective insights about the psyche and the body to make claims regarding broader activity patterns across nature and ground these new monistic continua in their concepts of rhythms (Bergson) and drives (Nietzsche). Lastly, I draw out three important consequences on which these moves jointly converge, with particular emphasis on the “quantal” nature of the ontologies they outline. Moving beyond the comparative perspective, I conclude by using these points to situate Bergson and Nietzsche among three different lineages of naturalism: metaphysical, antireductionist, and Epicurean.

Rhythms and Drives

In this article, I draw attention to some important points of intersection in the work of Henri Bergson and Friedrich Nietzsche. In particular I focus on the overlapping nature of their naturalisms. This proves enlightening for an overall appreciation of their respective philosophical projects but also allows those projects to be inscribed within a broader set of naturalistic traditions to which I think they contribute in interesting ways. I begin by assessing how Bergson's and Nietzsche's general problematics are shaped by the antinaturalistic character of their targets, more specifically the appeals to the immobile and the unconditional that they expose in their critical approaches. I move on to examine the core components of their naturalistic responses, highlighting how both thinkers extend introspective insights about the psyche and the body to make claims regarding broader activity patterns across nature and ground these new monistic continua in their concepts of rhythms (Bergson) and drives (Nietzsche). Lastly; I draw out three important consequences on which these moves jointly converge, with particular emphasis on the “quantal” nature of the ontologies they outline. Moving beyond the comparative perspective, I conclude by using these points to situate Bergson and Nietzsche among three different lineages of naturalism: metaphysical antireductionist, and Epicurean.

Landscape Modeling of the Potential Natural Vegetation of Santa Catalina Island, California

The vegetation of Santa Catalina Island has been significantly transformed through a history of introduction of exotic plant species and disturbance by large introduced herbivores. Many of these disturbances have been reduced in recent decades, using measures such as carefully controlling the number of bison and removing cattle, sheep, feral pigs, and goats. The success of subsequent vegetation restoration actions depends on the choice of the right plant community for a location, which may not be obvious for an island with extensive areas dominated by exotic species. Environmental niche modeling is an approach to re-create the spatial distribution of habitat types for such a purpose. Such models, however, often require both presence and absence data to be meaningful, while in this scenario absence is misleading because it may reflect a long history of disturbance. Maximum entropy modeling is a technique to model species distributions with presence-only data that has been shown to produce accurate results. We used this modeling tool to model the environmental niche for distinct vegetation types, conceptualized as potential natural vegetation, on Catalina Island as a means to predict locations where restoration actions would be most successful and to predict potential natural vegetation prior to anthropogenic disturbance. Using an existing vegetation map, we extracted random points from within the polygons defining each native vegetation type. We then modeled the habitat suitability for each habitat using high-resolution environmental data that included elevation, aspect, hillshade, northeastness, slope, solar radiation, and topographic wetness index. The resulting models were combined to produce a map of potential natural vegetation. A 1977 map of potential natural vegetation included 4 vegetation types (woodland, chaparral, scrub, and grassland) to which we compared our results. Our new model of potential natural vegetation has high spatial complexity and high resolution. It also shows naturalistic responses to topography that are consistent with the broad patterns mapped in 1977 while providing fine-scale resolution to inform restoration efforts.

Against compassion: in defence of a "hybrid" concept of empathy.

In this article, I argue that the recent emphasis on compassion in healthcare practice lacks conceptual richness and clarity. In particular, I argue that it would be helpful to focus on a larger concept of empathy rather than compassion alone and that compassion should be thought of as a component of this larger concept of empathy. The first part of the article outlines a critique of the current discourse of compassion on three grounds. This discourse naturalizes, individualizes, and reifies compassion leading to a decontextualized and simplified understanding of failures in healthcare practice. The second part uses resources from phenomenology and contemporary moral philosophy to construct a "hybrid" concept of empathy that includes both pre-reflective/intuitive and cognitive/imaginative components. This "hybrid" concept of empathy leads to a more complex understanding of the multiple responses to others' distress. I conclude that there are no straightforward normative naturalistic responses to others' distress. Rather than conceptualizing compassion as a naturalistic impulse or a character-based trait, we need to consider the complexity of our empathic recognition of vulnerable others.

Dynamically adapted context-specific hyper-articulation: Feedback from interlocutors affects speakers' subsequent pronunciations.

We ask whether speakers can adapt their productions when feedback from their interlocutors suggests that previous productions were perceptually confusable. To address this question, we use a novel web-based task-oriented paradigm for speech recording, in which participants produce instructions towards a (simulated) partner with naturalistic response times. We manipulate (1) whether a target word with a voiceless plosive (e.g., pill) occurs in the presence of a voiced competitor (bill) or an unrelated word (food) and (2) whether or not the simulated partner occasionally misunderstands the target word. Speakers hyper-articulated the target word when a voiced competitor was present. Moreover, the size of the hyper-articulation effect was nearly doubled when partners occasionally misunderstood the instruction. A novel type of distributional analysis further suggests that hyper-articulation did not change the target of production, but rather reduced the probability of perceptually ambiguous or confusable productions. These results were obtained in the absence of explicit clarification requests, and persisted across words and over trials. Our findings suggest that speakers adapt their pronunciations based on the perceived communicative success of their previous productions in the current environment. We discuss why speakers make adaptive changes to their speech and what mechanisms might underlie speakers' ability to do so.

Scepticism, Relativism and a Naturalistic Particularism

This paper presents a particularist and naturalist response to epistemic relativism. The response is based on an analysis of the source of epistemic relativism, according to which epistemic relativism is closely related to Pyrrhonian scepticism. The paper starts with a characterization of epistemic relativism. Such relativism is explicitly distinguished from epistemological contextualism. Next the paper presents an argument for epistemic relativism that is based on the Pyrrhonian problem of the criterion. It then considers a response to the problem of the criterion proposed by Roderick Chisholm, which is based on epistemological particularism. After sketching Chisholm’s approach, a response to epistemic relativism is presented which combines Chisholm’s particularism with epistemic naturalism and reliabilism. A number of objections to the position are then considered. The paper ends with remarks about the relationship between particularism and the naturalistic response proposed to epistemic relativism.

Why the epistemic relativist cannot use the sceptic’s strategy. A comment on Sankey

In two recent papers in Studies in History and Philosophy of Science Howard Sankey has argued that there is an intimate relationship between Pyrrhonian skepticism and recent approaches to epistemic relativism.Though the general argument and idea of Sankey’s papers is very much appreciated, it is argued that the epistemic relativist’s recourse to the skeptical strategy outlined by the Pyrrhonian is not a good one. This diagnosis gives rise to an objection against the epistemic relativist who argues on the basis of the skeptical strategy that differs from Sankey’s naturalistic response. Furthermore, it can be shown that what is really at stake between epistemic relativism and epistemic absolutism is the question of which criteria there are for variation of epistemic norms and epistemic systems.

Embryonic assembly of auditory circuits: spiral ganglion and brainstem

During early development, peripheral sensory systems generate physiological activity prior to exposure to normal environmental stimuli. This activity is thought to facilitate maturation of these neurons and their connections, perhaps even promoting efficacy or modifying downstream circuitry. In the mammalian auditory system, initial connections form at embryonic ages, but the functional characteristics of these early neural connections have not been assayed. We investigated processes of embryonic auditory development using a whole-head slice preparation that preserved connectivity between peripheral and brainstem stations of the auditory pathway. Transgenic mice expressing fluorescent protein provided observation of spiral ganglion and cochlear nucleus neurons to facilitate targeted electrophysiological recording. Here we demonstrate an apparent peripheral-to-central order for circuit maturation. Spiral ganglion cells acquire action potential-generating capacity at embryonic day 14 (E14), the earliest age tested, and action potential waveforms begin to mature in advance of comparable states for neurons of the ventral cochlear nucleus (VCN) and medial nucleus of the trapezoid body (MNTB). In accordance, auditory nerve synapses in the VCN are functional at E15, prior to VCN connectivity with the MNTB, which occurs at least 1 day later. Spiral ganglion neurons exhibit spontaneous activity at least by E14 and are able to drive third-order auditory brainstem neurons by E17. This activity precedes cochlear-generated wave activity by 4 days and ear canal opening by at least 2 weeks. Together, these findings reveal a previously unknown initial developmental phase for auditory maturation, and further implicate the spiral ganglion as a potential controlling centre in this process.

Witchcraft, Relativism and the Problem of the Criterion

This paper presents a naturalistic response to the challenge of epistemic relativism. The case of the Azande poison oracle is employed as an example of an alternative epistemic norm which may be used to justify beliefs about everyday occurrences. While a distinction is made between scepticism and relativism, an argument in support of epistemic relativism is presented that is based on the sceptical problem of the criterion. A response to the resulting relativistic position is then provided on the basis of a particularist response to scepticism combined with a naturalistic approach to the warrant of epistemic norms. It is argued that it is possible to comparatively assess the ability of epistemic norms to lead to epistemic aims. As against the epistemic relativist, it is possible to provide an objective basis for the choice between alternative epistemic norms.

The really hard problem: meaning in a material world

If consciousness is hard problem in mind science -- explaining how the amazing private world of consciousness emerges from neuronal activity -- then really hard problem, writes Owen Flanagan in this provocative book, is explaining how meaning is possible in the material world. How can we make sense of the magic and mystery of life naturalistically, without an appeal to the supernatural? How do we say truthful and enchanting things about being human if we accept the fact that we are finite material beings living in a material world, or, in Flanagan's description, short-lived pieces of organized cells and tissue? Flanagan's answer is both naturalistic and enchanting. We all wish to live in a meaningful way, to live a life that really matters, to flourish, to achieve eudaimonia -- to be a happy spirit. Flanagan calls his empirical-normative inquiry into the nature, causes, and conditions of human flourishing eudaimonics. Eudaimonics, systematic philosophical investigation that is continuous with science, is the naturalist's response to those who say that science has robbed the world of the meaning that fantastical, wishful stories once provided. Flanagan draws on philosophy, neuroscience, evolutionary biology, and psychology, as well as on transformative mindfulness and self-cultivation practices that come from such nontheistic spiritual traditions as Buddhism, Confucianism, Aristotelianism, and Stoicism, in his quest. He gathers from these disciplines knowledge that will help us understand the nature, causes, and constituents of well-being and advance human flourishing. Eudaimonics can help us find out how to make a difference, how to contribute to the accumulation of good effects -- how to live a meaningful life.

The Naturalistic Response to Scepticism

Hume is sometimes thought to provide a ‘naturalistic’ response to the sceptic. I consider two ways in which this response may be construed. According to the first, the fact that we are psychologically determined to hold a belief provides it with justification. According to the second, ‘natural’ beliefs provide limits within which reason can legitimately be employed, limits which the sceptic transgresses when he attempts to defend his position. Both versions of the naturalistic response to scepticism, I will argue, aren't plausible. And they aren't, at least not predominantly, Hume's.

Naturalistic Responses to Skepticism

Naturalistic Responses to Skepticism

The Moral Sense

Many important social scientific theories develop a culturalist view of norms and values. Their proponents consider values and norms as cultural features that are endorsed or rejected by social actors because they have been socialized to them. Against these influential traditions, which all dissolve the reality of moral feelings and make them the effect of highly conjectural psychological or social forces, a naturalistic reaction inspired notably by sociobiology has appeared. Its growing influence is due to the fact that its criticisms of culturalist theories are solidly grounded. However, the naturalist response is also exposed to serious criticism. An alternative solution is proposed here: moral convictions are established in the same way as cognitive convictions, i.e. that the source of moral convictions lies in strong reasons. This can be illustrated by empirical examples. The cognitivist theory of moral feelings proposed here is not contradicted by the fact that moral convictions change over time, but can explain this change more easily than other theories. Furthermore, it clarifies the question as to the nature of the moral constraints that made Durkheim uncomfortable. This theory has a special relevance in today's world where `community' seems to become the ultimate moral referent. Clearly, the positive value ascribed to the idea of community is on a par with the fact that culturalism is so popular today.

Genetically modified animals: ethical issues.

The method of ethical analysis is reviewed and applied to questions relating to the unintended consequences, ownership, and metaphysical significance of genetically modified animals. The question of how genetics and recombinant DNA discoveries have an impact on human understanding of the moral community and the limits of acceptable action are emphasized. The potential for genetically modified animals presents a challenge to implicit norms for defining these boundaries. Four philosophical responses to this challenge are reviewed: fundamentalism, conventionalism, dualism, and naturalism. The naturalist response is most consistent with contemporary biology, but it also entails that animals have limited moral significance.

Hume's Naturalism-`Proof' and Practice

Hume's naturalism is often seen as only an extended pragmatic mitigation of scepticism. Whereas the Pyrrhonist concedes that we have to act on particular beliefs although they are not rationally justifiable, Hume extends the necessity to cover the holding of particular beliefs which are not rationally justifiable. On this view, Hume offers to the sceptic only a claim about the unavoidability of particular beliefs, a counter-description which uncritically accepts the sceptic's thesis about lack of rational justification. I want to challenge this reading of Hume by reconsidering his category of proof, arguing that it can shed light on how his naturalist response to scepticism might consistently show more than simply the irresistibility of particular beliefs.