Different early rearing experiences have long‐term effects on cortical organization in captive chimpanzees (Pan troglodytes)

Consequences of rearing history in chimpanzees (Pan troglodytes) have been explored in relation to behavioral abnormalities and cognition; however, little is known about the effects of rearing conditions on anatomical brain development. Human studies have revealed that experiences of maltreatment and neglect during infancy and childhood can have detrimental effects on brain development and cognition. In this study, we evaluated the effects of early rearing experience on brain morphology in 92 captive chimpanzees (ages 11–43) who were either reared by their mothers (n = 46) or in a nursery (n = 46) with age‐group peers. Magnetic resonance brain images were analyzed with a processing program (BrainVISA) that extracts cortical sulci. We obtained various measurements from 11 sulci located throughout the brain, as well as whole brain gyrification and white and grey matter volumes. We found that mother‐reared chimpanzees have greater global white‐to‐grey matter volume, more cortical folding and thinner grey matter within the cortical folds than nursery‐reared animals. The findings reported here are the first to demonstrate that differences in early rearing conditions have significant consequences on brain morphology in chimpanzees and suggests potential differences in the development of white matter expansion and myelination.     

The good,the bad,and the ugly: three agent-type challenges to The Order of Public Reason

In this issue of Philosophical Studies, Richard Arneson, Jonathan Quong and Robert Talisse contribute papers discussing The Order of Public Reason (OPR). All press what I call “agent-type challenges” to the project of OPR. In different ways they all focus on a type (or types) of moral (or sometimes not-so-moral) agent. Arneson presents a good person who is so concerned with doing the best thing she does not truly endorse social morality; Quong a bad person who rejects it and violates the basic rights of others, and Talisse a morally ugly person, a hypocrite, who criticizes others for failing to do what he does not do. All suggest that OPR does not give a satisfying account of what we are to say to, or how we should act towards, such agents. In my response I highlight some core concerns of OPR, while also seeking to show that OPR does not say quite what they think it says, and it often leaves them room for saying what they would like to say about such agents.     

Jobs,Institutions, and Beneficial Retirement

According to Saul Smilansky's ‘Paradox of Beneficial Retirement’, many serving members of professions may have decisive integrity‐based reasons for retiring immediately. The Paradox of Beneficial Retirement holds that a below‐par performance in one's job does not require any outright incompetence, but may take a purely relational form, in which a good performance is not good enough if it would be improved upon by someone else who would be appointed instead. It is argued, in response, that jobs in the sectors Smilansky mentions are not merely positions to optimize the goals of the profession, but are professional careers in which there is the possibility of security and personal fulfilment. The article also explores connections between Smilansky's argument and G. A. Cohen's anti‐incentives argument against Rawls. It is suggested that both thinkers underappreciate the relationship between personal reasons and institutional reasons. ¹      

People Awakening: Collaborative Research to Develop Cultural Strategies for Prevention in Community Intervention

The consequences of alcohol use disorder (AUD) and suicide create immense health disparities among Alaska Native people. The People Awakening project is a long-term collaboration between Alaska Native (AN) communities and university researchers seeking to foster health equity through development of positive solutions to these disparities. These efforts initiated a research relationship that identified individual, family, and community protective factors from AUD and suicide. AN co-researchers next expressed interest in translating these findings into intervention. This led to development of a strengths-based community intervention that is the focus of the special issue. The intervention builds these protective factors to prevent AUD and suicide risk within AN youth, and their families and communities. This review provides a critical examination of existing literature and a brief history of work leading to the intervention research. These work efforts portray a shared commitment of university researchers and community members to function as co-researchers, and to conduct research in accord with local Yup’ik cultural values. This imperative allowed the team to navigate several tensions we locate in a convergence of historical and contemporary ecological contextual factors inherent in AN tribal communities with countervailing constraints imposed by Western science.     

TURNING STONES INTO BREAD: DEVELOPING SYNERGISTIC SCIENCE/RELIGION APPROACHES TO THE WORLD FOOD CRISIS

The Institute on Religion in an Age of Science (IRAS) has a long history of delivering conferences addressing topics of interest in the field of science and religion. The following papers from the 2013 summer conference on “The Scientific, Spiritual, and Moral Challenges in Solving the World Food Crisis” are, in keeping with the eclectic nature of these conferences, very different in content and approach. Such differences underline the challenges of synergistically combining scientific and religious insights to increase understanding of global problems and their possible solutions. This in turn reflects deeper questions about the purpose and nature of the science/religion dialogue. These papers suggest various ways in which the two perspectives can be combined in the pursuit of building better understandings of food‐related issues, as well as highlighting difficulties and limitations which need to be addressed if the fruits of such dialogue are to make a wider impact. As such they serve as useful pointers for how this type of science/religion interaction might be further developed and deployed.     

Perceptual learning of orientation judgments in oblique meridians

Fourteen daily training sessions in orientation discrimination of foveal lines in the 45-deg meridian improved thresholds in the trained meridian by an average of 25 % in five observers. A substantial amount of training transferred to the other obliques, but none to the cardinal meridians, with a consequent reduction in the oblique effect. The data were interpreted as showing perceptual learning at two levels: performance facilitation specific to the trained orientation and improved proficiency globally. The failure of the cardinal orientations to share in the benefit is likely to have its origin in the fact that contour orientation in these meridians is so well established that it had already reached maximum hyperacuity thresholds. The judgment of obliques depends much more than the judgment of cardinals on whether the comparison and test stimuli are shown simultaneously or in succession, but this effect is not changed by perceptual training.     

Perceptual Processes in the Cross-Race Effect: Evidence From Eyetracking

The cross-race effect (CRE) is the tendency to have better recognition accuracy for same-race than for other-race faces due to differential encoding strategies. Research exploring the nature of encoding differences has yielded few definitive conclusions. The present experiments explored this issue using an eyetracker during a recognition task involving White participants viewing White and African American faces. Participants fixated faster and longer on the upper features of White faces and the lower features of African American faces. When instructing participants to attend to certain features in African American faces, this pattern was exaggerated. Gaze patterns were related to improved recognition accuracy.     

Reasonable Pluralism and the Domain of the Political: How the Weaknesses of John Rawls's Political Liberalism Can be Overcome by a Justificatory Liberalism

Under free institutions the exercise of human reason leads to a plurality of reasonable, yet irreconcilable doctrines. Rawls's political liberalism is intended as a response to this fundamental feature of modern democratic life. Justifying coercive political power by appeal to any one (or sample) of these doctrines is, Rawls believes, oppressive and illiberal. If we are to achieve unity without oppression, he tells us, we must all affirm a public political conception that is supported by these diverse reasonable doctrines. The first part of this essay argues that the free use of human reason leads to reasonable pluralism over most of what we call the political. Rawls's notion of the political does not avoid the problem of state oppression under conditions of reasonable pluralism. The second part tries to show how justificatory liberalism provides (1) a conception of the political that takes seriously the fact that the free use of human reason leads us to sharply disagree in the domain of the political while (2) articulating a conception of the political according to which the coercive intervention of the state must be justified by public reasons.