We report an empirical study of elementary algebra errors, conducted in three separate schools. The errors are diagnosed using mal‐rules, as proposed by Sleeman (1984, 1,985). Our analysis uncovers the following properties of algebra mal‐rules: The frequency of mal‐rules is severely skewed, there are many infrequent mal‐rules and few frequent ones; mal‐rules are very unstable, students typically use mal‐rules very irregularly; different mal‐rules have explanatory power in different schools (many of our most powerful mal‐rules are previously unreported); mal‐rule diagnosis Is (...) more successful with more skilled students; students' confidence ratings do not partition the total set of mal‐rules, every mal‐rule we find is associated with high confidence ratings by at least one student. The Implications of our data for cognitive theories of error generation are discussed. Contrary to commonplace assumptions, we argue that It is impossible to make a clear distinction between slips and mistakes; most errors depend on properties of the knowledge base and the cognitive architecture. Errors In a procedural skill cannot be assumed to be purely syntactic In orgin. (shrink)

In lieu of an abstract, here is a brief excerpt of the content:The Environmental Genome Project and BioethicsRichard R. Sharp (bio) and J. Carl Barrett (bio)Eight years ago, the Kennedy Institute of Ethics Journal published a brief selection by Eric Juengst (1991) entitled “The Human Genome Project and Bioethics.” That essay introduced and described the Ethical, Legal, and Social Implications (ELSI) Program at the National Center for Human Genome Research. 1 Since that time, the ELSI program has grown to (...) become one of the largest and most well regarded bioethics programs in the country, sponsoring the work of hundreds of researchers and coordinating bioethics activities both nationally and internationally (Marshall 1996; Meslin, Thomson, and Boyer 1997). In 1991, however, Juengst, the first director of the ELSI program, had no way of anticipating these developments. Juengst’s goal in his essay was simply to highlight some of the moral and social issues that were emerging as focal points for the ELSI program. Looking back, the issues he outlined may seem vague and overly broad. At the time, however, the essay served an important purpose, to identify areas requiring additional study and thereby to serve as a guide to others interested in joining in these discussions.In many ways, Juengst’s article serves as an inspiration to those of us working on a new bioethics project. The National Institute of Environmental Health Sciences (NIEHS) recently launched a multi-year project aimed at better understanding genetic influences on environmentally associated diseases (Albers 1997; Brown and Hartwell 1998; Cannon 1997; Kaiser 1997). This project, known as the Environmental Genome Project (EGP), plans to identify and study a number of common genetic variants that may play an important role in determining how individuals respond to environmental exposures. NIEHS hopes that the information learned through the EGP will be instrumental in developing more effective disease-prevention strategies and intervention programs. Following the precedent developed in connection with the Human Genome Project, NIEHS also plans to address the moral and social implications of the EGP. Efforts in this regard include sponsoring workshops and conferences to address such issues, as well as supporting research on the ethical, legal, and social implications of the EGP. Through this work, NIEHS hopes to anticipate potential problems before [End Page 175] they arise and to develop policies that maximize the benefits of the research while avoiding potential misuses of the information learned.In exploring the social implications of the EGP, we at NIEHS are very fortunate to be able to draw upon the work being done by the ELSI program at the National Human Genome Research Institute (NHGRI), as well as the ever-expanding bioethics literature that has been sparked by the ELSI program. Still, there is much to be done and this is an exciting time for those of us involved with the EGP. Many of the ethical, legal, and social implications of the project are only beginning to become clearer, and several of these issues appear quite different from the sorts of concerns that have previously been discussed in connection with other types of genetic research.This essay highlights some of the ethical, legal, and social implications that are emerging as important focal points for the Environmental Genome Project. Like Juengst’s 1991 paper, the goal of this article is to provide an overview of current areas of interest and to encourage others to join us in thinking about these difficult issues.The Environmental Genome ProjectIndividuals differ greatly in their responses to chemicals, drugs, radiation, smoking, alcohol, and other environmental exposures. These differential responses are the result of complex interactions between many factors, including an individual’s genetic make-up, age, sex, nutritional status, and overall health. The EGP aims to better understand the genetic basis of differential responses to environmental exposures. The vast majority of diseases, many forms of cancer, for example, are the consequence of both environmental and genetic contributions (Perera 1997). Hence, understanding the relationships between genetic variation and response to environmental exposure is important for understanding the causes of human disease and is crucial for the development of effective disease-prevention strategies.The EGP and projects like it represent a new stage of genomic research. It is expected that the Human Genome Project will complete... (shrink)

New Zealand is a multilingual and multicultural society, where English, Maori, and the New Zealand sign language are designated as its official languages. However, some heritage languages are also taught either within or outside the national education system. During the past decade, an increasing number of students have chosen Mandarin Chinese as an additional language because of its fast-growing importance. To date, studies regarding CAL are mainly based on the mainstream Chinese programs or online platforms, with less attention paid to (...) other types of teaching contexts where there also exist many potential challenges awaiting teachers. To fill in this gap, this study, based on a teaching program consisting of two families in New Zealand, explored the trajectories of a CAL teacher’s emotional labor for 47 weeks to understand how she managed her emotions when she taught the language as well as balanced the relationship among the three parties: the institution, the two families, and herself. Narrative inquiry was used as a methodological approach. The data involved written and spoken narratives. Using inductive and deductive thematic analysis, findings revealed her different understandings of the emotional labor in the two families, respectively, during the program. Further analysis of the data revealed some factors that impacted her emotional labor and how they impacted her teaching in a family-based context. We concluded our study with a discussion of the implications of these findings for teaching CAL in similar contexts. (shrink)

Both RalA and RalB interact with the ubiquitous calcium sensor, calmodulin (CaM). New structural and biophysical characterisation of these interactions strongly suggests that, in the native membrane‐associated state, only RalA can be extracted from the membrane by CaM and this non‐canonical interaction could underpin the divergent signalling roles of these closely related GTPases. The isoform specificity for RalA exhibited by CaM is hypothesised to contribute to the disparate signalling roles of RalA and RalB in mitochondrial dynamics. This would lead to (...) CaM shuttling RalA to the mitochondrial membrane but leaving RalB localisation unperturbed, and in doing so triggering mitochondrial fission pathways rather than mitophagy. (shrink)

Many clinical and psychological constructs are conceptualized to have multivariate higher-order constructs that give rise to multidimensional lower-order traits. Although recent measurement models and computing algorithms can accommodate item response data with a higher-order structure, there are few measurement models and computing techniques that can be employed in the context of complex research synthesis, such as meta-analysis of individual participant data or integrative data analysis. The current study was aimed at modeling complex item responses that can arise when underlying domain-specific, (...) lower-order traits are hierarchically related to multiple higher-order traits for individual participant data from multiple studies. We formulated a multi-group, multivariate higher-order item response theory (HO-IRT) model from a Bayesian perspective and developed a new Markov chain Monte Carlo (MCMC) algorithm to simultaneously estimate the (a) structural parameters of the first- and second-order latent traits across multiple groups and (b) item parameters of the model. Results from a simulation study support the feasibility of the MCMC algorithm. From the analysis of real data, we found that a bivariate HO-IRT model with different correlation/covariance structures for different studies fit the data best, compared to a univariate HO-IRT model or other alternate models with unreasonable assumptions (i.e., the same means and covariances across studies). Although more work is needed to further develop the method and to disseminate it, the multi-group multivariate HO-IRT model holds promise to derive a common metric for individual participant data from multiple studies in research synthesis studies for robust inference and for new discoveries. (shrink)

Originally published in 1940, this book contains a succinct introduction to Boethius, the influential medieval philosopher who was writing during the final days of the Western Roman Empire. Barrett keeps the general reader in mind as she explains Boethius' philosophy and his role in keeping Greek thinking available to his fellow Romans even as they were being conquered by the Ostrogoths. This book will be of value to anyone with an interest in ancient thought and in Late Antique philosophy.

Are the places that superhuman beings purportedly act and dwell randomly or arbitrarily distributed? Inspired by theoretical work in cognitive science of religion, descriptions of superhuman beings were solicited from informants in 20 countries on five continents, resulting in 108 usable descriptions, including information about these beings’ properties, their dwelling location, and whether they were the target of rituals. Whether superhuman beings are the subject of religious and ritual practices appeared to co-vary in relation to both features of physical geography (...) and cognitive factors. Good gods were more likely the focus of religious practices than evil gods, and where the gods are thought to dwell mattered. If either the being was thought to dwell in a dangerous place or a resource rich place, it was more likely to have practices directed at it. (shrink)

If “Big Gods” evolved in part because of their ability to morally regulate groups of people who cannot count on kin or reciprocal altruism to get along, then powerful gods would tend to be good gods. If the mechanism for this cooperation is some kind of fear of supernatural punishment, then we may expect that mighty gods tend to be punishing gods. The present study is a statistical analysis of superhuman being concepts from 20 countries on five continents to explore (...) whether the goodness of a god is related to its mightiness. Gods that looked more like the God of classical theism and gods that were low in anthropomorphism were more likely to be regarded as morally good and to be the target of religious practices. Mighty gods were not, however, especially likely to punish or to be a “high god.”. (shrink)

Herrera-Ferrá et al.’s (2023) attention to the cultural context of the neurorights movement contributes to the growing conversation on establishing neurorights in response to advancements in neuros...

David K. Lewis (1941-2001) was unquestionably one of the most important analytic philosophers of the twentieth century, writing papers and books, largely but not exclusively in metaphysics, that set the intellectual agenda across a huge variety of topics in the last three decades. Some twenty years after his death, this collection of essays reflects the historical importance of Lewis's work by bringing together a range of scholarly reflections on his work. The essays consider a range of topics including the nature (...) of metaphysics, the epistemology of necessary truths, possibility, naturalness, supervenience, time travel, causation, semantics, and ethics. Several of them draw on an exciting new body of material in the Lewisian corpus, his extensive correspondence, recently published in two volumes (OUP, 2020). The wide-ranging topics of these essays illustrate the impressive extent of Lewis's thought and his reach across most areas of analytic philosophy. The chapters collected in this volume adds to the increasing literature on the philosophy of David K. Lewis and will be an important book for those examining his role in the history of analytic philosophy. (shrink)

How We Fight: Ethics in War contains ten groundbreaking essays by some of the leading philosophers of war. The essays offer new perspectives on key debates including pacifism, punitive justifications for war, the distribution of risk between combatants and non-combatants, the structure of 'just war theory', and bases of individual liability in war.

The life-long correspondence of David K. Lewis, one of the most influential philosophers of the twentieth century, reveals the development, breadth, and depth of his philosophy in its historical context. The first of this two volume collection of letters focuses on his contributions to metaphysics, arguably where he made his greatest impact.

A medical student's ability to present a case history is a critical skill that is difficult to teach. Case histories presented without theatrical engagement may fail to catch the attention of their intended recipients. More engaging presentations incorporate ‘stage presence’, eye contact, vocal inflection, interesting detail and succinct, well organised performances. They convey stories effectively without wasting time. To address the didactic challenge for instructing future doctors in how to ‘act’, the Mayo Medical School and The Mayo Clinic Center for (...) Humanities in Medicine partnered with the Guthrie Theater to pilot the programme ‘Telling the Patient's Story’. Guthrie teaching artists taught storytelling skills to medical students through improvisation, writing, movement and acting exercises. Mayo Clinic doctors participated and provided students with feedback on presentations and stories from their own experiences in patient care. The course's primary objective was to build students' confidence and expertise in storytelling. These skills were then applied to presenting cases and communicating with patients in a fresher, more engaging way. This paper outlines the instructional activities as aligned with course objectives. Progress was tracked by comparing pre-course and post-course surveys from the seven participating students. All agreed that the theatrical techniques were effective teaching methods. Moreover, this project can serve as an innovative model for how arts and humanities professionals can be incorporated for teaching and professional development initiatives at all levels of medical education. (shrink)

Distinguished contributors take up eminent scholar Daniel R. Schwarz’s reading of modern fiction and poetry as mediating between human desire and human action. The essayists follow Schwarz’s advice, “always the text, always historicize,” thus making this book relevant to current debates about the relationships between literature, ethics, aesthetics, and historical contexts.

Over the past several decades, nurses have been increasingly theorizing about the relationships between culture, health, and nursing practice. This culture theorizing has changed over time and has recently been subject to much critical examination. The purpose of this paper is to identify the challenges impeding nurses' ability to build theory about the relationships between culture and health. Through a historical overview, I argue that continued support for the essentialist view of culture can maintain a limited view of complex race (...) relations. I also argue that attempts to apply culture theory, without knowledge of important historical, political, and economic factors, has often resulted in oversimplified versions of what was originally intended. Furthermore, I argue that individual-level interventions alone will be insufficient to address health inequities related to culture. Despite new critical conceptualizations of culture and the uptake of cultural safety, nursing scholars must better address the broader organizational, population, and political interventions needed to address inequities in health. I conclude with suggestions for how nurses might proceed with culture theorizing given these challenges. (shrink)

Humans are an exceptionally cooperative species, but there is substantial variation in the extent of cooperation across societies. Understanding the sources of this variability may provide insights about the forces that sustain cooperation. We examined the ontogeny of prosocial behavior by studying 326 children 3–14 y of age and 120 adults from six societies (age distributions varied across societies). These six societies span a wide range of extant human variation in culture, geography, and subsistence strategies, including foragers, herders, horticulturalists, and (...) urban dwellers across the Americas, Oceania, and Africa. When delivering benefits to others was personally costly, rates of prosocial behavior dropped across all six societies as children approached middle childhood and then rates of prosociality diverged as children tracked toward the behavior of adults in their own societies. When prosocial acts did not require personal sacrifice, prosocial responses increased steadily as children matured with little variation in behavior across societies. Our results are consistent with theories emphasizing the importance of acquired cultural norms in shaping costly forms of cooperation and creating cross-cultural diversity. (shrink)