Polarization is a topic of intense interest among social scientists, but there is significant disagreement regarding the character of the phenomenon and little understanding of underlying mechanics. A first problem, we argue, is that polarization appears in the literature as not one concept but many. In the first part of the article, we distinguish nine phenomena that may be considered polarization, with suggestions of appropriate measures for each. In the second part of the article, we apply this analysis to evaluate (...) the types of polarization generated by the three major families of computational models proposing specific mechanisms of opinion polarization. (shrink)

Biological science uses multiple species concepts. Order can be brought to this diversity if we recognize two key features. First, any given species concept is likely to have a patchwork structure, generated by repeated application of the concept to new domains. We illustrate this by showing how two species concepts (biological and ecological) have been modified from their initial eukaryotic applications to apply to prokaryotes. Second, both within and between patches, distinct species concepts may interact and hybridize. We thus defend (...) a semantic picture of the species concept as a collection of interacting patchwork structures. Thus, although not all uses of the term pick out the same kind of unit in nature, the diversity of uses reflects something more than mere polysemy. We suggest that the emphasis on the use of species to pick out natural units is itself problematic, because that is not the term’s sole function. In particular, species concepts are used to manage inquiry into processes of speciation, even when these processes do not produce clearly delimited species. (shrink)

Volume 20, Issue 7, July 2020, Page 128-132.

For Émilie Du Châtelet, I argue, a central role of the principle of sufficient reason is to discriminate between better and worse explanations. Her principle of sufficient reason does not play this role for just any conceivable intellect: it specifically enables understanding for minds like ours. She develops this idea in terms of two criteria for the success of our explanations: “understanding how” and “understanding why.” These criteria can respectively be connected to the determinateness and contrastivity of explanations. The crucial (...) role Du Châtelet’s principle of sufficient reason plays in identifying good explanations is often overlooked in the literature, or else run together with questions about the justification and likelihood of explanations. An auxiliary goal of the article is to situate Du Châtelet’s principle of sufficient reason with respect to some of the general epistemological and metaphysical commitments of her Institutions de Physique, clarifying how it fits into the broader project of that work. (shrink)

On the aesthetics and poetics of Hawks and Ford; their resurgence in film studies.

ABSTRACT This article distinguishes nine senses of polarization and provides formal measures for each one to refine the methodology used to describe polarization in distributions of attitudes. Each distinct concept is explained through a definition, formal measures, examples, and references. We then apply these measures to GSS data regarding political views, opinions on abortion, and religiosity—topics described as revealing social polarization. Previous breakdowns of polarization include domain-specific assumptions and focus on a subset of the distribution’s features. This has conflated multiple, (...) independent features of attitude distributions. The current work aims to extract the distinct senses of polarization and demonstrate that by becoming clearer on these distinctions we can better focus our efforts on substantive issues in social phenomena. (shrink)

It is not uncommon to hear that poor school performance, welfare dependancy, youth unemployment, and criminal activity result more from shortcomings in the personal makeup of individuals than from societal forces beyond their control. Are American values declining as so many suggest? And are those values at the root of many social problems today?Shaped by experience and public policies, people's values and social norms do change. What role can or should a democratic government play in shaping values? And how do (...) these values conditon the efficacy of public policy?In this book, six distinguished social scientists identify trends in America's values and their consequences, and consider public policy tools with which some of those values might be changed.Daniel Yankelovich begins with a discussion of how American values have shifted in the last half-century, and argues that affluence is the driving force behind these changes in values. James Q. Wilson argues that destructive habits which can lead to social pathologies, like crime and drug use, are set early in life; he examines how public policy might intervene when children are young to promote better values. David Popenoe maintains that America has veered too far towards industrialist values, and explores the resulting decline of families and many attendant social ills. Nathan Glazer describes the history and present status of the dispute over multicultural education. Jane Mansbridge examines the process of building cooperation, consensus, and public spirit. And George Akerlof and Janet L. Yellen discuss the problem of gang criminality.Inthe past, social scientists have often sidestepped questions about values as undefinable, unquantifiable, and somehow unscientific. The essays in this volume address these questions at last.Henry J. Aaron, director of the Economic Studies program at Brookings, is the authorof numerous books, including most recently Serious and Unstable Condition: Financing America's Health Care (1991), and coeditor of Setting Domestic Priorities (1992). Thomas E. Mann is director of the Brookings Governmental Studies program, coeditor of Media Polls in American Politics (1992), and coauthor of the Renewing Congress series (1993). Timothy Taylor is managing editor of the Journal of Economic Perspectives at Stanford University. (shrink)

Retrieval practice, relative to further study, leads to long-term memory enhancement known as the “testing effect.” The neurobiological correlates of the testing effect at retrieval, when the learning benefits of testing are expressed, have not been fully characterized. Participants learned Swahili-English word-pairs and were assigned randomly to either the Study-Group or the Test-Group. After a week delay, all participants completed a cued-recall test while undergoing functional magnetic resonance imaging. The Test-Group had superior memory for the word-pairs compared to the Study-Group. (...) While both groups exhibited largely overlapping activations for remembered word-pairs, following an interaction analysis the Test-Group exhibited differential performance-related effects in the left putamen and left inferior parietal cortex near the supramarginal gyrus. The same analysis showed the Study-Group exhibited greater activations in the dorsal MPFC/pre-SMA and bilateral frontal operculum for remembered vs. forgotten word-pairs, whereas the Test-Group showed the opposite pattern of activation in the same regions. Thus, retrieval practice during training establishes a unique striatal-supramarginal network at retrieval that promotes enhanced memory performance. In contrast, study alone yields poorer memory but greater activations in frontal regions. (shrink)

The following article is a response to Virginia Aspe’s “The Political Dilemmas of the Transformations of Mexico: A Philosophical Approach”. My aim is to discuss some ideas developed by Aspe Armella, pointing out, from the perspective of the history of Mexican philosophy, both the successes of her approach, as well as some aspects that deserve more debate.

This introductory chapter provides an overview of the main themes covered in the present volume. It highlights the interdisciplinary approach taken in the choice of contributors to the volume which it is hoped will result in new perspectives on the philosophy of the Scottish Enlightenment. The chapter notes that the contributors approach Hutcheson, Hume, Smith, and Reid from new points of view, and other important figures and philosophical themes are discussed in terms of their contributions to a distinctively Scottish philosophical (...) scene in the eighteenth century. The chapter presents an outline of these themes including Scottish institutions and education, moral philosophy, aesthetic theory, religious thought, and historical and political theory. (shrink)

Perinatal palliative and hospice care (hereafter, perinatal hospice) is a novel approach to addressing a family’s varied needs following an adverse in utero diagnosis. Christian defenses of perinatal hospice tend to focus on its role as an ethical alternative to abortion. Although these analyses are important, they do not provide adequate grounds to characterize the wide range of goods realized through this compassionate form of care. This essay draws on an analysis of the Christian virtue of humility to highlight the (...) ways a Christian virtue-based defense of perinatal hospice can account for these goods. I argue that humility can play an important facilitating role in helping Christian physicians to meet the needs of families in profoundly difficult circumstances. (shrink)

It is widely held that, in his pre-Critical works, Kant endorsed a necessitation account of laws of nature, where laws are grounded in essences or causal powers. Against this, I argue that the early Kant endorsed the priority of laws in explaining and unifying the natural world, as well as their irreducible role in in grounding natural necessity. Laws are a key constituent of Kant’s explanatory naturalism, rather than undermining it. By laying out neglected distinctions Kant draws among types of (...) natural law, grounding relations, and ontological levels, I show that his early works present a coherent and sophisticated laws-first account of the natural order. (shrink)

This paper offers a unified explanation for the procreation asymmetry and the non-identity thesis – two of the most intractable puzzles in population ethics. According to the procreation asymmetry, there are moral reasons not to create lives that are not worth living but no moral reasons to create lives that are worth living. I explain the procreation asymmetry by arguing that there are moral reasons to prevent the bad, but no moral reasons to promote the good. Various explanations for the (...) procreation asymmetry have failed to explain the non-identity thesis: if one could create a person with a good life or a different person with a better life, one has a moral reason to create the better life. I argue that reflections on the misfortune of unfulfilled potential allow us to circumvent the non-identity problem. (shrink)

I present three versions of the argument from divine hiddenness that are grounded in moral considerations regarding how a just deity would act and auxiliary commitments that theists often have. First, I argue that the problem of hiddenness is made worse if one also holds that many will suffer in the afterlife due to not achieving a proper orientation towards God and the demands of morality in this life. Second, I argue that if any version of the moral argument for (...) theism is successful, then God has a very good reason to not remain hidden. Third, I argue that a just God would not allow people to do evil in her name. (shrink)

If social critique is to play a role in broad social transformation, then it must be able to engage with the terms that people use to understand their lives. This essay argues that we can find an important model for performing social critique in the quite different work of Jeffrey Stout and Judith Butler. For both, social critique must be immanent and it must make explicit the character of the norms by which people currently live. This model is especially important (...) in a situation where various moral and cultural traditions are confronting one another, and where it is necessary to work towards shared social and political goals. Stout and Butler present a method for achieving one's political goals by engaging with others on terms that they would recognize and seeking to transform the political structures they inhabit. Furthermore, their approaches provide helpful insights for further reflection on the critical possibilities in current ethnographic work. (shrink)

Achieving valid informed consent from a human research participant involves an ongoing process designed to protect the participant and ensure their rights, safety, and well-being are not compromise...

Andrew Cullison There is one final worry about bringing emotions into a theory of moral perception that might be best drawn out with an analogy to nonmoral perception. Suppose we were beings with a slightly different nonmoral perceptual apparatus. Suppose phenomenal qualia that we typically experience when we observe objects also showed up in our cognitive life when we weren’t experiencing the presence of an object. Basically, we would periodically have apparent perceptions of objects when there were no objects. Furthermore, (...) suppose we could know that this was sometimes the case. I suspect we would feel rational pressure to be a bit more skeptical about our nonmoral judgments based on perception. One might argue that we’re kind of in that situation if our moral perception apparatus includes an emotional component. We often experience emotions when there is nothing moral about the situation we’re in, and so by analogy to the perception case, we might think that we should be a bit more skeptical about moral judgments. A possible virtue of a moral perception view that didn’t make emotions a component of the view might not have to address this worry, but if emotions are indeed an important part of Audi’s moral perception theory, then it is worth asking why we shouldn’t take ourselves to have some defeaters for moral beliefs. Aaron Bronfman The official topic of John Broome’s Rationality through Reasoning is the “motivation question”: How does the belief that you ought to do something cause you to intend to do that thing? And indeed, the parts of the book do combine to offer an answer to that question. But, as Broome himself suggests, much of the interest comes from the steps along the way. The book greatly expands and develops Broome’s earlier work, drawing rich connections throughout ðaddressing how ought figures in requirements of rationality, how reasons may be defined in terms of ought, whether there is reason to be rational, how rationality is connected to the process of reasoning, etc.Þ. This review considers Broome’s account of four main concepts in turn: ought, reasons, rationality, and reasoning. (shrink)

Human motor learning is governed by a suite of interacting mechanisms each one of which modifies behavior in distinct ways and rely on different neural circuits. In recent years, much attention has been given to one type of motor learning, called motor adaptation. Here, the field has generally focused on the interactions of three mechanisms: sensory prediction error SPE-driven, explicit, and reinforcement learning. Studies of these mechanisms have largely treated them as modular, aiming to model how the outputs of each (...) are combined in the production of overt behavior. However, when examined closely the results of some studies also suggest the existence of additional interactions between the sub-components of each learning mechanism. In this perspective, we propose that these sub-component interactions represent a critical means through which different motor learning mechanisms are combined to produce movement; understanding such interactions is critical to advancing our knowledge of how humans learn new behaviors. We review current literature studying interactions between SPE-driven, explicit, and reinforcement mechanisms of motor learning. We then present evidence of sub-component interactions between SPE-driven and reinforcement learning as well as between SPE-driven and explicit learning from studies of people with cerebellar degeneration. Finally, we discuss the implications of interactions between learning mechanism sub-components for future research in human motor learning. (shrink)

Humans have now amassed a sizable knowledge of widespread, nonconscious cognitive biases which affect our behavior, especially in social and economic contexts. I contend that a democratic government is uniquely justified in using knowledge of cognitive biases to promote pro-democratic behavior, conditionally justified in using it to accomplish ends traditionally within the scope of government authority, and unjustified in using it for any other purpose. I also contend that the government ought to redesign institutional infrastructure to avoid triggering cognitive biases (...) where it is not permitted intentionally to manipulate such biases and to optimize the effects of such biases where permissible. I shall use the United States of America as an example throughout, but my conclusions apply equally to any democracy which values the political autonomy of its populace. (shrink)

In this paper, I argue that the good is irreducible. I use the term ‘irreducible’ in a way similar to but not identical to G. E. Moore’s usage of ‘indefinable’ as found in Principia Ethica. By ‘irreducible,’ I mean that something cannot be simplified into something other than itself. For my purposes, this is to say that the good is sui generis and cannot be accounted for by anything other than itself. Inspired by what I take to be Moore’s basic (...) insight, I develop my own argument pertaining to the uniqueness of the good. My argument goes partially beyond intuition, and hence beyond Moore, by means of applied intuitions. In the penultimate section, I apply the Discordancy Argument to Aristotle’s ethics, arguing that it is an attestation to the general virtue thesis that what is good does not admit of a reducible deduction. Broadly speaking, I consider the Discordancy Argument and general ethical intuitionism as justification for the Aristotelian idea that good actions are found in concrete particulars and not reducible abstractions, hinting at Aristotle’s affinity for ethical intuitionism. Furthermore, a recent debate surrounding moral ontology is deemed obsolete. (shrink)

Confronted by the White supremacists who had murdered their loved ones in June 2015, many of the family members of those killed at Mother Immanuel AME Church spoke words of forgiveness. The familie...

When Descartes made his scientific work public, he ushered in a worldview based almost entirely on mechanical motion, which brought along a complete rejection of “occult” forces. Thus, the foundation of astrology was equally rejected by many prominent Cartesians. However, the popularity of Descartes’ system lead to its rapid adoption by many subjects, astrology included. Here, I will take a look at the curious case of Claude Gadroys, whose primary work, Discours sur les influences des astres, defends a mechanical account (...) of astrology that accords with Descartes’ principles. Gadroys’ Discours employs a sophisticated strategy to rehabilitate astrology of the 17th century against Pico della Mirandola, among other critics. Gadroys’ theory even incorporates Descartes’ discovery, contra the scholastics, that the sublunary and celestial spheres do not differ in kind. Surprisingly, Gadroys uses Descartes’ discovery to substantiate the stars influencing the Earth, whereas earlier astrologers required such a distinction. Gadroys’ adoption of Cartesian philosophy highlights two major theses. First, the advent of mechanical philosophy in no way necessitated the downfall of astrology; instead, it merely changed the direction of astrological explanation for those that followed current science. Second, it shows the selective nature of Cartesian explanation and hypotheses. (shrink)

Most specialists agree that Peirce upholds his abstract definitions of reality and truth simultaneously and consistently with his pragmatist clarifications of those concepts. But some might assume that his pragmatist clarifications (the third grade of clearness) restrict the extensions of abstract definitions (the second grade of clearness), such that anything real must both be independent of what anyone thinks about it, per the abstract definition, and be an object of the would-be “final opinion”, per the pragmatist clarification. I call this (...) reading Interpretive Dependence of the second grade of clearness on the third grade. In contrast, on Interpretive Independence, which I defend here, a concept can have a different extension on the second grade than it has on the third grade, such that it could be true, in a purely abstract sense, that there are realities that can never be known (metaphysical realism). “True” here must also be interpreted only according to an abstract definition, namely, one which Peirce endorses in 1906 and which, I argue, is a deflationary definition. Interpretive Independence not only allows Peirce to explain the intuitive appeal of metaphysical realism, while at the same time rejecting it, it also allows him to explain how there can be truths about fictional objects and truths in pure mathematics. (shrink)

In this commentary, we apply the authors' view to small groups consisting of two people who are in a committed romantic relationship. Our focus is on the circumstances that make it more likely that people will stay within such a group and minimize the chances that they will replace their partner. In our restless society, such ongoing replacement is a pressing issue.