Two experiments examined the restriction of referential domains during unscripted conversation by analyzing the modification and online interpretation of referring expressions. Experiment 1 demonstrated that from the earliest moments of processing, addressees interpreted referring expressions with respect to referential domains constrained by the conversation. Analysis of eye movements during the conversation showed elimination of standard competition effects seen with scripted language. Results from Experiment 2 pinpointed two pragmatic factors responsible for restriction of the referential domains used by speakers to design (...) referential expressions and demonstrated that the same factors predict whether addressees consider local competitors to be potential referents during online interpretation of the same expressions. These experiments demonstrate, for the first time, that online interpretation of referring expressions in conversation is facilitated by referential domains constrained by pragmatic factors that predict when addressees are likely to encounter temporary ambiguity in language processing. (shrink)

A classic problem in cognitive science concerns how listeners perceive and understand speech as comprised of discrete words. We propose a Syllable Inference account of spoken word recognition and segmentation, under which alternative hierarchical models of syllables, words, and phonemes are dynamically posited from cues that include current and past speech rate, with a goal of maximal prediction of sensory input. Three experiments using the Visual World eye‐tracking paradigm provide evidence supporting our proposal.

We propose, following Clark, that generative models also play a central role in the perception and interpretation of linguistic signals. The data explanation approach provides a rationale for the role of prediction in language processing and unifies a number of phenomena, including multiple-cue integration, adaptation effects, and cortical responses to violations of linguistic expectations.

We agree with Pickering & Garrod's (P&G's) proposal that dialogue is an important empirical and theoretical test bed for models of language processing. However, we offer two cautionary notes. First, the enterprise will require explicit computational models. Second, such models will need to incorporate both joint and separate speaker and hearer commitments in ways that go beyond priming and alignment.

Thus far, we know much more about the significant outcomes of perceived ethical leadership than we do about its antecedents. In this study, we focus on multiple types of ethical role models as antecedents of perceived ethical leadership. According to social learning theory, role models facilitate the acquisition of moral and other types of behavior. Yet, we do not know whether having had ethical role models influences follower perceptions of one’s ethical leadership and, if so, what kinds of role models (...) are important. We conducted a field study, surveying supervisors and their subordinates to examine the relationship between three types of ethical role models and ethical leadership: the leader’s childhood role models, career mentors, and top managers. We found that having had an ethical role model during the leader’s career was positively related to subordinate-rated ethical leadership. As expected, this effect was moderated by leader age, such that the relationship between career mentoring and ethical leadership was stronger for older leaders. Leader age also moderated the relationship between childhood models and ethical leadership ratings, such that having had childhood ethical role models was more strongly and positively related to ethical leadership for younger leaders. We found no effect for top management ethical role models. Implications for research and practice are discussed. (shrink)

IntroductionCognitive impairment is a highly prevalent non-motor feature of Parkinson’s disease. A better understanding of the underlying pathophysiology may help in identifying therapeutic targets to prevent or treat dementia. This study sought to identify metabolic alterations in the prefrontal cortex, a key region for cognitive functioning that has been implicated in cognitive dysfunction in PD.MethodsProton Magnetic Resonance Spectroscopy was used to investigate metabolic changes in the PFC of a cohort of cognitively normal individuals without PD, as well as PD participants (...) with either normal cognition, mild cognitive impairment, or dementia. Ratios to Creatine resonance were obtained for glutamate, glutamine and glutamate combined, N-acetylaspartate, myoinositol, and total choline, and correlated with cognitive scores across multiple domains administered to the PD participants only.ResultsWhen individuals retain cognitive capabilities, the presence of Parkinson’s disease does not create metabolic disturbances in the PFC. However, when cognitive symptoms are present, PFC Glu/Cre ratios decrease with significant differences between the PD-NC and PPD groups. In addition, Glu/Cre ratios and memory scores were marginally associated, but not after Bonferroni correction.ConclusionThese preliminary findings indicate that fluctuations in prefrontal glutamate may constitute a biomarker for the progression of cognitive impairments in PD. We caution for larger MRS investigations of carefully defined PD groups. (shrink)

© 2017. The American Astronomical Society. All rights reserved.We present new observations of the low-mass companion to HD 984 taken with the Gemini Planet Imager as a part of the GPI Exoplanet Survey campaign. Images of HD 984 B were obtained in the J and H bands. Combined with archival epochs from 2012 and 2014, we fit the first orbit to the companion to find an 18 au orbit with a 68% confidence interval between 14 and 28 au, an eccentricity (...) of 0.18 with a 68% confidence interval between 0.05 and 0.47, and an inclination of 119°with a 68% confidence interval between 114°and 125°. To address the considerable spectral covariance in both spectra, we present a method of splitting the spectra into low and high frequencies to analyze the spectral structure at different spatial frequencies with the proper spectral noise correlation. Using the split spectra, we compare them to known spectral types using field brown dwarf and low-mass star spectra and find a best-fit match of a field gravity M6.5 ±1.5 spectral type with a corresponding temperature of K. Photometry of the companion yields a luminosity of log=2.88 ± 0.07 dex with DUSTY models. Mass estimates, again from DUSTY models, find an age-dependent mass of 34 ±1 to 95 ±4 M Jup. These results are consistent with previous measurements of the object. (shrink)

This article discusses xenotransplantation and examines the way its scientific promoters have defended their technology against potentially damaging public representations. The authors explore the criteria used to legitimate the selection of the pig as the best species from which to “harvest” transplant tissues in the future. The authors’ analysis shows that scientists and medical practitioners routinely switch between scientific and cultural repertoires. These repertoires enable such actors to exchange expert identities in scientific discourse for public identities in cultural discourse. These (...) discourses map onto similarities and differences between animal donors and human hosts. Finally, the case is used to comment on a number of related approaches where the dynamics of medical and scientific authority are discussed. (shrink)

Since Horn (1972) the notion of conversational implicature proposed by Grice has been put to use to explain certain interpretive differences between expressions in natural language and their counterparts in formal logic. For example, the sentences in (1) seem to convey more than they would be expected to if the natural language disjunction or had the same meaning as the logical disjunction ∨, or if the quantificational determiner some was interpreted as the existential quantifier ∃.

Is it ever fair to limit treatment for diseases like glioblastoma for which prognosis is poor? Because resources are finite and health care spending limits the other possible uses for those resources, limiting access to an intervention that does not generate benefits is ethically sound. Ignoring the balance of benefits and burdens associated with treatment ignores opportunity costs and leads us to treat some lives as more valuable than others. It also ignores evidence that patients and families, when presented with (...) adequate information about the benefits and burdens of aggressive treatment compared with palliative care, often prefer the palliative care option.Should the limitations we set on the availability of care be greater for older people than younger people? Since the 1980s, scholars have called for strong age rationing of medical care in which Medicare would not pay for anything other than palliative care after they have achieved average life expectancy. (shrink)

Chomsky, meanwhile, has long expressed great reluctance even to recommend reading material to his audiences, let alone how they ought to vote, on the basis that they shouldn’t be substituting his judgment for their own. At the same time he has equally consistently maintained that elections are an elaborate PR charade unworthy of more than the briefest attention, a stance he somehow considers consistent with the petition’s call to put the presidential elections at the top of our list of concerns (...) this year. Fortunately, these two fine dissidents haven’t joined in the vilification of Nader that has become all the rage among Democrats and all-too-many progressives, at least not yet. (shrink)

This paper develops twenty hypotheses concerning the relationships among selected individual differences variables (locus of control, delay of gratification, gender, and race) and five different ethical beliefs. The results of a study of collegians provide support for seventeen out of twenty research hypotheses. As predicted, locus of control, delay of gratification, and race are related to ethical beliefs. Also as predicted, gender is not related to ethical beliefs.

Images of Native Americans and of aspects of Native American culture are common in advertisements in the United States. Three such images can be distinguished — the Noble Savage, the Civilizable Savage and the Bloodthirsty Savage images. The aim of this paper is to argue that the use of such images is not morally acceptable because these images depend upon an underlying conception of Native Americans that denies that they are human beings. By so doing, it also denies to them (...) any moral standing and thus any claim to moral consideration and treatment. I begin by arguing that the traits which are distinctively human are fostered only within a cultural framework consisting of the accumulated knowledge and activities of a group of human beings. I then argue that savages are conceptualized as natural and cultureless beings. Furthermore, within the traditional Western conceptualization of the world mere natural objects have no moral standing. Thus, it follows that Native Americans insofar as they are also merely natural objects would have no standing or status as moral beings. The conception of Native Americans as savages undercuts the very conditions for the possibility of moral respect. I then turn to an application of these principles to some current commercial uses of images of Native Americans and other indigenous peoples. (shrink)

I present an original model in judgment aggregation theory that demonstrates the general impossibility of consistently describing decision-making purely at the group level. Only a type of unanimity rule can guarantee a group decision is consistent with supporting reasons, and even this possibility is limited to a small class of reasoning methods. The key innovation is that this result holds when individuals can reason in different ways, an allowance not previously considered in the literature. This generalizes judgment aggregation to subjective (...) decision situations, implying that the discursive dilemma persists without individual agreement on the logical constraints. Notably, the model mirrors the typical method of choosing political representatives, and thus suggests that no voting procedure other than unanimity rule can guarantee representation that reflects electorate opinion. Finally, I apply the results to a normative argument for unanimity rule in contract theory and juries, as well as to problems posed for deliberative democratic theory and the concept of representation. (shrink)

Based in a global array of case studies - Malaysia, Saudi Arabia, Pakistan, Turkey, and Islamic education in the United States - this volume shows how the discourse concerning educational technology in the Islamic world has emphasized neoliberal and neofundamentalist themes, and argues that the design and implementation of educational technologies in schools would be better accomplished by taking a culturally grounded approach. This approach would be rooted in the context and local needs of learners, with implications and possible application (...) in the Muslim world and beyond. (shrink)

This introduction to nonviolent movements analyzes fourteen classic and contemporary cases to show how nonviolent strategies can work where violent warfare has failed. Drawing on practitioner knowledge and diverse philosophical and religious texts, Michael K. Duffey offers a multifaceted argument for embracing nonviolent resolutions to conflict.

Some philosophers have recently complained that moral theories almost always portray the distresses of ordinary people in moral predicaments as irrational. In the name of having a minimally realistic picture of ethical thought, these philosophers argue that accounts of morality must allow for strong moral dilemmas, choices involving mutually exclusive all-things-considered requirements or jointly exhaustive all-things-considered prohibitions. In this dissertation I clarify and reject several versions of this argument, which I call the argument from experience. ;In chapters one and two (...) I define strong moral dilemmas as essentially involving conflicts of moral reasons, and reject as premature attempts to reduce questions about strong dilemmas to questions about deontic logic. I accept the goal of representing ordinary experience faithfully, and ask whether a theory will necessarily distort that experience if it employs interpretations of 'ought' and 'prohibited' in ways guaranteeing a priori that there are no strong dilemmas. ;The argument from experience claims that people can have a justifiably high degree of confidence that they are in strong moral dilemmas, and in chapter three I question whether people ever have the needed sorts of confidence about the limits of their abilities, the precise location of their wrongdoing, or the futility of continued moral deliberation. ;In chapter four I reject specific arguments based on regret and guilt. The tendency to feel unavoidable agent-regret or guilt allegedly shows that the agent sees the choice as a strong dilemma, and the appropriateness of such distresses allegedly shows that the agent's way of seeing things is rational. I reply that someone can feel agent-regret without endorsing any moral judgment involving 'ought' or 'prohibited', and that guilt is never unavoidably appropriate. ;In chapter five I trace the failure of the argument from experience to the presence in ordinary thought of a notion of blame which is both conceptually guaranteed always to be avoidable and regarded as an infallible indicator of moral requirement and prohibition. I am led to wonder, finally, why this notion of blame should play a privileged role in philosophical pictures of morality. (shrink)

Homer and the heroic ideal -- Hesiod, poet of everyday life -- Aeschylus and the institution of justice -- Sophocles, the Theban plays -- Euripides and the twilight of the gods -- The inquiries of Herodotus of Halicarnassus -- Thucydides, power and pathos -- Aristophanes and the serious business of comedy -- Plato, philosophy, and poetry -- Aristotle and the invention of political science.

This essay introduces a special report from The Hastings Center entitled Democracy in Crisis: Civic Learning and the Reconstruction of Common Purpose, which grew out of a project supported by the John S. and James L. Knight Foundation. This multiauthored report offers wide‐ranging assessments of increasing polarization and partisanship in American government and politics, and it proposes constructive responses to this in the provision of objective information, institutional reforms in government and the electoral system, and a reexamination of cultural and (...) political values needed if democracy is to function well in a pluralistic and diverse society. The essays in the special report explore the norms of civic learning and institutions, social movements, and communal innovations that can revitalize civic learning in practice. This introductory essay defines and explains the notion of civic learning, which is a lynchpin connecting many of the essays in the report. Civic learning pertains to the ways in which citizens learn about collective social problems and make decisions about them that reflect the duties and responsibilities of citizenship. Such learning can occur in many social settings in everyday life, and it can also be facilitated through participation in the processes of democratic governance on many levels. Civic learning is not doctrinaire and is compatible with a range of public goals and policies. It is an activity that increases what might be called the democratic capability of a people. (shrink)

The need to choose between good things in conflict lies at the heart of politics. Only citizens deliberating together can authoritatively form the democratic public judgment necessary to resolve such conflicts. The key step to arriving at a sound widely supported public judgment is getting all members of the public to “comprehend”---to understand and appreciate---the goods in conflict. Mutual comprehension enables us to combine our individual perspectives without loss, thereby providing the basis for collective deliberation. Such comprehension is essential because (...) the mutual respect between citizens upon which democratic politics depends is impossible without it. Mutual comprehension is possible because we share a common human nature that, despite our manifest and irreducible differences is built around a limited and universal set of human needs and dispositions. (shrink)

Many older people need external support for their daily living. A large minority of older adults with low or modest pension incomes face financial strains from the high cost of illness, and many older people in urban areas live in social isolation. Indeed, population aging has become a policy topic of concern. The policy debate since the end of the twentieth century about the future of public pensions and health and long‐term care programs has increasingly framed the growing numbers of (...) older people in alarmist terms. Unfounded claims about the unaffordability and unsustainability of social policies supporting older people have become common currency, often disguised as concerns about intergenerational justice. Such claims and concerns hinder clear thinking about proper social and fiscal policies, housing, health care, and labor markets to safeguard the well‐being of older people in aging societies. (shrink)

Providing the most thorough coverage available in one volume, this comprehensive, broadly based collection offers a wide variety of selections in four major genres, and also includes a section on film. Each of the five sections contains a detailed critical introduction to each form, brief biographies of the authors, and a clear, concise editorial apparatus. Updated and revised throughout, the new Fourth Edition adds essays by Margaret Mead, Russell Baker, Joan Didion, Annie Dillard, and Alice Walker; fiction by Nathaniel Hawthorne, (...) Ursula K. LeGuin, Anton Chekov, James Joyce, Katherine Mansfield, F. Scott Fitzgerald, William Faulkner, Alice Walker, Louise Erdrich, Donald Barthelme, and James McPherson; poems by John Donne, Robert Browning, Walt Whitman, Edwin Arlington Robinson, e.e. cummings, Langston Hughes, W.H. Auden, Philip Levine, and Louise Gluck; and plays by August Wilson, Marsha Norman, Wendy Wasserstein, and Vaclav Havel. The chapter devoted to film examines the relation of film to literature and gives the complete screenplay for Citizen Kane plus close analysis of a scene from the film. With its innovative structure, comprehensive coverage, and insightful and stimulating presentation of all kinds of literature, this is an anthology readers will turn to again and again. (shrink)

This paper analyzes individual probabilistic predictions of state outcomes in the 2008 U.S. presidential election. Employing an original survey of more than 19,000 respondents, ours is the first study of electoral forecasting to involve multiple subnational predictions and to incorporate the influence of respondents’ home states. We relate a range of demographic, political, and cognitive variables to individual accuracy and predictions, as well as to how accuracy improved over time. We find strong support for wishful thinking bias in expectations, as (...) Republicans gave higher probabilities to McCain victories and were worse at overall prediction. In addition, we find that respondents living in states with higher vote shares for Obama performed better at prediction and displayed less wishful thinking bias. We conclude by showing that suitable aggregations of our respondents’ predictions outperformed Intrade (a prediction market) and fivethirtyeight.com (a poll-based forecast) at most points in time. (shrink)

The Hebrew Psalter is a repertoire of paired phenomena. From parallelisms to twin Psalms, biblical scholars have paid attention to these structural and poetical features as keys to unlocking and interpreting the meaning and theology of these psalms. Unfortunately, the otherwise admirable results of these exegetical works remain abstract and largely removed from the interests of the African reader. An alternative way of engaging these texts is to realise that paired phenomena are not exclusive to the Hebrew Psalter. African indigenous (...) sacred texts such as the Adinkra of the Akan people equally contain similar phenomena though relatively little attention has been paid to them. This article, using a dialogical approach of African Biblical Hermeneutics, studies the twin Psalms 111 and 112 as an example of a paired phenomenon in the Psalter. It brings this text into dialogue with the Adinkra denkyemfunefu to illustrate how focussing on similar structural phenomena in either text uncovers the same theme of the common good in either text and facilitates the reception of the biblical discourse in contemporary African contexts.Contribution: It is argued that common literary features in biblical and African indigenous sacred texts could be harnessed as vehicles for facilitating the reception of biblical discourse in contemporary Africa. (shrink)

The original evidence advanced to support the Tensed S Condition (TSC) and the Specified Subject Condition (SSC) in Chomsky's Conditions on Transformations is reconsidered and viable alternatives to these constraints are provided. It is shown that TSC and SSC, in some instances, lead to a loss of linguistically significant generalization. Satisfactory alternatives can account for the relevant range of data and provide a more general account of additional data. Finally, counterevidence to Subjacency and Superiority is adduced, but explicit alternatives to (...) these conditions are not offered. (shrink)

Introduction : saving liberal democracy from itself -- Individualism versus individuality -- Interference, independence, and what's worth doing -- Autonomy -- Freedom, rights, and conflicts between values -- Ethics and rules -- Exploring consequences -- The ethical point of view -- Objective ethics : the good -- Objective ethics : the right -- Negotiating ethically -- Why think ethically? -- Ethical heroism -- Afterword.