After spinal cord injury (SCI), motoneuron death occurs at and around the level of injury which induces changes in function and organization throughout the nervous system, including cortical changes. Muscle affected by SCI may consist of both innervated (accessible to voluntary drive) and denervated (inaccessible to voluntary drive) muscle fibers. Voluntary activation measured with transcranial magnetic stimulation (VATMS) can quantify voluntary cortical/subcortical drive to muscle but is limited by technical challenges including suboptimal stimulation of target muscle relative to its antagonist. (...) The motor evoked potential (MEP) in the biceps compared to the triceps (i.e., MEP ratio) may be a key parameter in the measurement of biceps VATMS after SCI. We used paired pulse TMS, which can inhibit or facilitate MEPs, to determine whether the MEP ratio affects VATMS in individuals with tetraplegia. Ten individuals with tetraplegia following cervical SCI and ten non-impaired individuals completed single pulse and paired pulse VATMS protocols. Paired pulse stimulation was delivered at 1.5, 10, and 30 ms inter-stimulus intervals (ISI). In both the SCI and non-impaired groups, the main effect of the stimulation pulse (paired pulse compared to single pulse) on VATMS was not significant in the linear mixed-effects models. In both groups for the stimulation parameters we tested, the MEP ratio was not modulated across all effort levels and did not affect VATMS. Linearity of the voluntary moment and superimposed twitch moment relation was lower in SCI participants compared to non-impaired. Poor linearity in the SCI group limits interpretation of VATMS. Future work is needed to address methodological issues that limit clinical application of VATMS. (shrink)

What is “the relation of logic to philosophy?” Is “the traditional bond between logic and philosophy severed?” That the field of logic has evolved away from philosophy proper is supported by the apparent fact that most logic research today is carried out by members of university departments other than philosophy with the main logical concern of philosophy departments being elementary logic instruction. So, it appears to many observers that logic used to be a part of philosophy, but that at the (...) leading edge of its research and study it is no longer a basic or pure component of the field of philosophy. Although I myself do not believe this assessment, I will presume for the sake of discussion that it is widely believed. Against this supposed separation of logic from philosophy, I will show how to re-establish the connection. (shrink)

What is “the relation of logic to philosophy?” Is “the traditional bond between logic and philosophy severed?” That the field of logic has evolved away from philosophy proper is supported by the apparent fact that most logic research today is carried out by members of university departments other than philosophy with the main logical concern of philosophy departments being elementary logic instruction. So, it appears to many observers that logic used to be a part of philosophy, but that at the (...) leading edge of its research and study it is no longer a basic or pure component of the field of philosophy. Although I myself do not believe this assessment, I will presume for the sake of discussion that it is widely believed. Against this supposed separation of logic from philosophy, I will show how to re-establish the connection. (shrink)

In these skeptical and disillusioned times, there are still groups of people scattered throughout the world who are trying to live out utopian dreams. These communities challenge the inevitability and morality of dominant political and economic models. By putting utopian religious ethics into practice, they attest to the real possibility of social alternatives. In Seeds of the Kingdom, Anna L. Peterson reflects on the experiences of two very different communities, one inhabited by impoverished former refugees in the mountains of (...) El Salvador and the other by Amish farmers in the Midwestern U.S. What makes these groups stand out among advocates of environmental protection, political justice, and sustainable development is their religious orientation. They aim, without apology, to embody the reign of God on earth. The Salvadoran community is grounded in Roman Catholic social thought, while the Amish adhere to Anabaptist tradition. Peterson offers a detailed portrait of these communities' history, social organization, religious life, environmental values, and agricultural practices. She discovers both practical and ideological commonalities in these two comparatively successful and sustainable communities, including a strong collective identity, deep attachment to local landscapes, a desire to preserve non-human as well as human lives, and, perhaps unexpectedly, a utopian horizon that provides both goals and the hope of reaching them. By examining the process by which people struggle to live according to a transcendent value system, she sheds light on both the actual and the potential place of religion in public life. Peterson argues that the Amish and Salvadoran communities, geographically and culturally removed from the industrialized West, have relevance for the political and environmental problems of the developed world. These communities have succeeded in the face of significant internal and external challenges, offering important practical and theoretical lessons on how to achieve ecological sustainability and social justice in the wider world. (shrink)

Theory of Mind (ToM) is the cognitive achievement that enables us to report our propositional attitudes, to attribute such attitudes to others, and to use such postulated or observed mental states in the prediction and explanation of behavior. Most normally developing children acquire ToM between the ages of 3 and 5 years, but serious delays beyond this chronological and mental age have been observed in children with autism, as well as in those with severe sensory impairments. We examine data from (...) studies of ToM in normally developing children and those with deafness, blindness, autism and Williams syndrome, as well as data from lower primates, in a search for answers to key theoretical questions concerning the origins, nature and representation of knowledge about the mind. In answer to these, we offer a framework according to which ToM is jointly dependent upon language and social experience, and is produced by a conjunction of language acquisition with children's growing social understanding, acquired through conversation and interaction with others. We argue that adequate language and adequate social skills are jointly causally sufficient, and individually causally necessary, for producing ToM. Thus our account supports a social developmental theory of the genesis of human cognition, inspired by the work of Sellars and Vygotsky. How are we to decide whether to take reason to be an essentially private thing that can, however, turn on a public display when it chooses to do so, or, like conversing, to be an essentially social skill, which can, however, be retained a while through periods of solitary confinement? (Annette Baier, The Commons of the Mind, p. 5). The squirrel does not infer by induction that it is going to need stores next winter as well (Wittgenstein, On Certainty§ 287). The problem of thought and language thus extends beyond the limits of natural science and becomes the focal problem of historical human psychology, i.e. of social psychology. Consequently, it must be posed in a different way (Vygotsky, Thought and Language, p. 51). From the very first days of the child's development his activities acquire a meaning of their own in a system of social behaviour and, being directed towards a definite purpose, are refracted through the prism of the child's environment. The path from object to child and from child to object passes through another person. This complex human structure is the product of a developmental process deeply rooted in the links between individual and social history (Vygotsky, Mind in Society, p. 30). (shrink)

Based on data from participant observation and in-depth interviews with women who live in a relatively homogeneous small, rural town, this article examines how women act to produce social class representations. By presenting symbols of socioeconomic positions, including behaviors, tastes, and values, during their work, the women in the town present themselves as working, middle, or upper class women. Through these representations, they secure a place within the town's subjective social class system.

In this paper, I propose that influential arguments of Jacques Derridas's and Judith Butler's rely on behaviorism and relativism, a reliance which has implications for, among other things, the issue of hate speech. I begin with a brief discussion of the philosophy of W. V. O. Quine, a thinker seldom discussed in relationship to continental poststructuralism. Quine is interesting because he explicitly defends an ontological relativism combined with linguistic behaviorism, the latter as influenced by B. F. Skinner and John Watson. (...) I then show that Butler's and Derrida's theories demonstrate a similar yet unacknowledged lineage. I devote the final section of the paper to a discussion of hate speech, and the problematization of behaviorism and relativism it entails. (shrink)

Presents arguments on both sides of the issue of euthanasia, including questions regarding ethics and legality, physician-assisted suicide, living wills, and removing life support from patients in a persistent vegetative state.

This paper is centred around a debate taking place among environmental scientists. One camp argues that proof of a causal connection between a chemical and a biological anomaly must be demonstrated in the laboratory. The other contends that actual damage is underestimated in the lab, and that it is therefore necessary to conduct supplemental ecoepidemiological research in order to determine the full impact of toxic chemicals. Members of the former contingent – claiming to be defending scientific rigour – sometimes accuse (...) their peers of practising an inferior science. This paper argues that this contention is supported by a philosophical tradition tending to favour abstract and formal analysis over the close examination of material detail. To the extent that this preference has been adopted by the media, industry, policy analysts, and regulatory bodies, more is at stake than an intellectual squabble. The paper provides a brief overview of the history of the formalist tendency in philosophy, followed by an illustration of the ways in which advocates of a strict laboratory methodology implicitly rely on this foundation. The work and ideas of contemporary ecoepidemiologists are then compared to this imposing edifice of traditional science. (shrink)

In this article, we focus on two issues, namely, the nature and onset of very early personal memories, especially for traumatic events, and the role of stress in long-term retention. We begin by outlining a theory of early autobiographical memory, one whose unfolding is coincident with emergence of the cognitive self. It is argued that it is not until this self emerges that personal memories will remain viable over extended periods of time. We illustrate this with 25 cases of young (...) children′s long-term retention of early traumatic events involving emergency room treatment. On the basis of both qualitative and quantitative analyses, we conclude that very young children retain limited memories for events which they commonly express behaviorally, coherent autobiographical memories are not constructed until the child develops a cognitive sense of self , autobiographical memories for traumatic events are essentially no different from those for nontraumatic events, stress is only related to long-term retention inasmuch as it is one variable that serves to make an event unique, and like nontraumatic events, traumatic memories lose peripheral details during the retention interval and retain the central components of the event. These results are discussed both in terms of their implications for theories of early autobiographical memory as well as the ways in which we might differentiate implanted memories and authentic memories for traumatic events. (shrink)

Themes of Christian martyrdom were central to popular political mobilization in El Salvador, as in much of Latin America, during the 1970s and 1980s. The story of Christ's sacrifice provided a powerful narrative for explaining injustice and political violence, a frame for interpretation as well as action during the twelve-year Salvadoran civil war, which ended in 1992 by a negotiated settlement. In the first part of this article we trace the politics of martyrdom and sacrifice through the war. The final (...) sections of the article examine the place of narratives of martyrdom and sacrifice in post-civil war El Salvador. While most Salvadorans today continue to experience high levels of inequality, poverty, and violence, the narratives of martyrdom and sacrifice that animated the revolutionary movements and liberation theology of the 1980s have lost much of their resonance. We suggest that the dispersion of both the perceived sources of, and the imagined solutions to, injustice contribute to the diminution in the importance of Christian narratives of martyrdom and sacrifice in El Salvador today. (shrink)

Theory of Mind is the cognitive achievement that enables us to report our propositional attitudes, to attribute such attitudes to others, and to use such postulated or observed mental states in the prediction and explanation of behavior. Most normally developing children acquire ToM between the ages of 3 and 5 years, but serious delays beyond this chronological and mental age have been observed in children with autism, as well as in those with severe sensory impairments. We examine data from studies (...) of ToM in normally developing children and those with deafness, blindness, autism and Williams syndrome, as well as data from lower primates, in a search for answers to key theoretical questions concerning the origins, nature and representation of knowledge about the mind. In answer to these, we offer a framework according to which ToM is jointly dependent upon language and social experience, and is produced by a conjunction of language acquisition with children's growing social understanding, acquired through conversation and interaction with others. We argue that adequate language and adequate social skills are jointly causally sufficient, and individually causally necessary, for producing ToM. Thus our account supports a social developmental theory of the genesis of human cognition, inspired by the work of Sellars and Vygotsky.How are we to decide whether to take reason to be an essentially private thing that can, however, turn on a public display when it chooses to do so, or, like conversing, to be an essentially social skill, which can, however, be retained a while through periods of solitary confinement? .The squirrel does not infer by induction that it is going to need stores next winter as well .The problem of thought and language thus extends beyond the limits of natural science and becomes the focal problem of historical human psychology, i.e. of social psychology. Consequently, it must be posed in a different way .From the very first days of the child's development his activities acquire a meaning of their own in a system of social behaviour and, being directed towards a definite purpose, are refracted through the prism of the child's environment. The path from object to child and from child to object passes through another person. This complex human structure is the product of a developmental process deeply rooted in the links between individual and social history. (shrink)

Convolutional neural networks (CNNs) are increasingly widely used in psychology and neuroscience to predict how human minds and brains respond to visual images. Typically, CNNs represent these images using thousands of features that are learned through extensive training on image datasets. This raises a question: How many of these features are really needed to model human behavior? Here, we attempt to estimate the number of dimensions in CNN representations that are required to capture human psychological representations in two ways: (1) (...) directly, using human similarity judgments and (2) indirectly, in the context of categorization. In both cases, we find that low-dimensional projections of CNN representations are sufficient to predict human behavior. We show that these low-dimensional representations can be easily interpreted, providing further insight into how people represent visual information. A series of control studies indicate that these findings are not due to the size of the dataset we used and may be due to a high level of redundancy in the features appearing in CNN representations. (shrink)

ABSTRACT:Psychedelic substances have great promise for the treatment of many conditions, and they are the subject of intensive research. As with other medical treatments, both research and clinical use of psychedelics depend on our ability to ensure informed consent by patients and research participants. However, some have argued that informed consent for psychedelic use may be impossible, because psychedelic experiences can be transformative in the sense articulated by L. A. Paul (2014). For Paul, transformative experiences involve either the acquisition of (...) knowledge that cannot be obtained in any other way or changes in the self. Either of these characteristics may appear to undermine informed consent. This article argues, however, that there is limited evidence that psychedelic experiences are transformative in Paul's sense, and that they may not differ in their transformative features from other common medical experiences for which informed consent is clearly possible. Further, even if psychedelic experiences can be transformative, informed consent is still possible. Because psychedelic experiences are importantly different in several respects from other medical experiences, this article closes with recommendations for how these differences should be reflected in informed consent processes. (shrink)

A startling amount of intelligent activity can be controlled without reasoning or thought. By tuning the perceptual system to task relevant properties a creature can cope with relatively sophisticated environments without concepts. There is a limit, however, to how far a creature without concepts can go. Rod Brooks, like many ecologically oriented scientists, argues that the vast majority of intelligent behaviour is concept-free. To evaluate this position I consider what special benefits accrue to concept-using creatures. Concepts are either necessary for (...) certain types of perception, learning, and control, or they make those processes computationally simpler. Once a creature has concepts its capacities are vastly multiplied. (shrink)

Decades of psychological research have been aimed at modeling how people learn features and categories. The empirical validation of these theories is often based on artificial stimuli with simple representations. Recently, deep neural networks have reached or surpassed human accuracy on tasks such as identifying objects in natural images. These networks learn representations of real‐world stimuli that can potentially be leveraged to capture psychological representations. We find that state‐of‐the‐art object classification networks provide surprisingly accurate predictions of human similarity judgments for (...) natural images, but they fail to capture some of the structure represented by people. We show that a simple transformation that corrects these discrepancies can be obtained through convex optimization. We use the resulting representations to predict the difficulty of learning novel categories of natural images. Our results extend the scope of psychological experiments and computational modeling by enabling tractable use of large natural stimulus sets. (shrink)

This paper summarizes recent and ongoing experimental work regarding the reality, nature, effects, and causes of the underrepresentation of women in academic philosophy. We first present empirical data on several aspects of underrepresentation, and then consider various reasons why this gender imbalance is problematic. We then turn to the published and preliminary results of empirical work aimed at identifying factors that might explain it.

No detailed description available for "Concepts and language".

William Bateson has long occupied a controversial role in the history of biology at the turn of the twentieth century. For the most part, Bateson has been situated as the British translator of Mendel or as the outspoken antagonist of W. F. R. Weldon and Karl Pearson's biometrics program. Less has been made of Bateson's transition from embryologist to advocate for discontinuous variation, and the precise role of British and American influences in that transition, in the years leading up to (...) the publication of his massive Materials for the Study of Variation. In this paper, I first attempt to trace Bateson's development in his early career before turning to search for the development of the moniker "anti-Darwinist" that has been attached to Bateson in well-known histories of the neo-Darwinian Synthesis. (shrink)

Conducting the first examination of animals' place in popular and scholarly thinking about nature, Anna L. Peterson builds a nature ethic that conceives of nonhuman animals as active subjects who are simultaneously parts of both nature and ...

This concise, well-structured survey examines the problem of evil in the context of the philosophy of religion. One of the core topics in that field, the problem of evil is an enduring challenge that Western philosophers have pondered for almost two thousand years. The main problem of evil consists in reconciling belief in a just and loving God with the evil and suffering in the world. Michael Peterson frames this issue by working through questions such as the following: What (...) is the relation of rational belief to religious faith? What different conceptual moves are possible on either side of the issue? What responses have important thinkers advanced and which seem most promising? Is it possible to maintain religious commitment in light of evil? Peterson relies on the helpful distinction between moral and natural evil to clarify our understanding of the different aspects of the problem as well as avenues for response.The overall format of the text rests on classifying various types of argument from evil: the logical, the probabilistic, the evidential, and the existential arguments. Each type of argument has its own strategy which both theists and nontheists must recognize and develop. Giving both theistic and nontheistic perspectives fair representation, the text works through the issues of whether evil shows theistic belief to be inconsistent, improbable, discredited by the evidence, or threatened by personal crisis.Peterson explains how defensive strategies are particularly geared for responding to the logical and probabilistic arguments from evil while theodicy is an appropriate response to the evidential argument. Theodicy has traditionally been understood as the attempt to justify belief in a God who is all-powerful and all-good in light of evil. The text discusses the theodicies of Augustine, Leibniz, Hick, and Whitehead as enlightening examples of theodicy. This discussion allows Peterson to identify and evaluate a rather dominant theme in most theodicies: that evil can be justified by designating a greater good. In the end, Peterson even explores how certain types of theodicy, based on specifically Christian renditions of theism, might provide a basis for addressing the existential problem of evil. The reader of this book gains not only an intellectual grasp of the debate over God and evil in professional philosophy but also the personal benefit of thinking through one of the most important issues in human life. (shrink)

Factive predicates (like ‘-matters’, ‘discover-’, ‘realizes-’) take NPs that refer to facts, propositional predicates (like ‘-seems’, ‘believes-’, ‘-likely’) take NPs that refer to propositions, and eventive predicates (like ‘-occurs’, ‘-take place’, ‘-causes-’) take NPs that refer to events (broadly speaking, including states, processes, conditions, ect.). Logically speaking at least two out of the three categories (facts, propositions, and events) can be eliminated. So, if all three kinds of referents turn out to be required for natural language semantics, their postulation is (...) empirically significant since a priori logical considerations do not require all of them.Pronominalization evidence inter alia raises questions about the distinctness of facts, events, and propositions. Two proposals for resolving the pronominalization dilemmas are, first, that abstract elements exist which contain the genuine antecedents for the pronouns (co-reference remaining both syntactic and semantic) and second, that syntactic co-reference is simply distinct from semantic co-reference. The first proposal hardly works at all, since it requires the postulation of many abstract elements and associated unmotivated deletion (or insertion) rules. The second proposal works for all the examples considered. Prior to discussing the two proposals, I show how any two of the three categories can be logically eliminated, a demonstration which also produces some hypothetical abstract elements of use in discussing both proposals. I conclude with some brief remarks on reference versus coreference. (shrink)