One hundred and three participants solved conflict and non-conflict versions of four reasoning tasks using a two-response procedure: a base rate task, a causal reasoning task, a denominator neglect task, and a categorical syllogisms task. Participants were asked to give their first, intuitive answer, to make a Feeling of Rightness judgment, and then were given as much time as needed to rethink their answer. They also completed a standardized measure of IQ and the actively open-minded thinking questionnaire. The FORs of (...) both high- and low-capacity reasoners were responsive to conflict, such that FORs were lower for conflict relative to non-conflict problems. Consistent with the quantity hypothesis, high-capacity reasoners made a greater distinction between conflict and non-conflict items on measures of Type 2 thinking, namely, rethinking time and probability of changing answers. In contrast to the quality hypothesis, however, this rethinking time did not advantage the ability of the high-capacity group to produce normative answers, except for the base rate task. Indeed, we observed that the correlation between capacity and the probability of normative answers emerged at the initial response, rather than after rethinking. (shrink)

Mobile applications are increasingly regarded as important tools for an integrated strategy of infection containment in post-lockdown societies around the globe. This paper discusses a number of questions that should be addressed when assessing the ethical challenges of mobile applications for digital contact-tracing of COVID-19: Which safeguards should be designed in the technology? Who should access data? What is a legitimate role for “Big Tech” companies in the development and implementation of these systems? How should cultural and behavioural issues be (...) accounted for in the design of these apps? Should use of these apps be compulsory? What does transparency and ethical oversight mean in this context? We demonstrate that responses to these questions are complex and contingent and argue that if digital contract-tracing is used, then it should be clear that this is on a trial basis and its use should be subject to independent monitoring and evaluation. (shrink)

In April 2020, close to the start of the first U.K. COVID-19 lockdown, the U.K. government announced the development of a COVID-19 contact tracing app, which was later trialled on the U.K. island, the Isle of Wight, in May/June 2020. United Kingdom surveys found general support for the development of such an app, which seemed strongly influenced by public trust. Institutions developing the app were called upon to fulfil the commitment to public trust by acting with trustworthiness. Such calls presuppose (...) that public trust associated with the app can emerge if the conditions for trustworthiness are met and that public trust is simplistic, i.e., linearly the sum of each member of the publics’ individual – U.K. government trust relationship. Drawing on a synthesis of the trust literature and fifteen interviews with members of the public trialling the app on the Isle of Wight, this paper aims to explore what trust mechanisms and relationships are at play when thinking about public trust in the context of the U.K. COVID-19 app. We argue that public trust is a complex social phenomenon and not linearly correlated with institutional trustworthiness. As such, attention needs to widen from calls for trustworthy infrastructures as a way to build public trust, to a deeper understanding of those doing the trusting; in particular, what or whom do people place their trust in when considering whether using the app and why. An understanding of this will help when trying to secure public trust during the implementation of necessary public health measures. (shrink)

Doctors form an essential part of an effective response to the COVID-19 pandemic. We argue they have a duty to participate in pandemic response due to their special skills, but these skills vary between different doctors, and their duties are constrained by other competing rights. We conclude that while doctors should be encouraged to meet the demand for medical aid in the pandemic, those who make the sacrifices and increased efforts are owed reciprocal obligations in return. When reciprocal obligations are (...) not met, doctors are further justified in opting out of specific tasks, as long as this is proportionate to the unmet obligation. (shrink)

In the coming weeks and months SARS-CoV-2 may ravage countries with weak health systems and populations disproportionately affected by HIV, tuberculosis, and other infectious diseases. Without safeguards and proper attention to global health equity and justice, the effects of this pandemic are likely to exacerbate existing health and socio-economic inequalities. This paper argues that achieving global health equity in the context of COVID-19 will require that notions of reciprocity and relational equity are introduced to the response.

The Sophists, and the Socratic response they provoked, are considered in order to elucidate issues raised by present-day skill-talk. These issues include: whether skills avoid questions of ends and truth; the existence of general skills, such as critical thinking; the importance of knowledge; skills and the personality; and some implications for teaching and philosophy.

Victor Quinn advocates teaching critical thinking as a curriculum subject. He has accused Professor John E. McPeck, a vehement critic of such proposals, not only of being wrong but also of being in need of such a critical thinking course himself. In this paper we examine the five supposed critical thinking weaknesses of which McPeck is accused and consider what Quinn's arguments tell us about critical thinking, its skills, its priorities and its claims to subject status.

Within the school of thought known as Critical Thinking, identifying or finding missing assumptions is viewed as one of the principal thinking skills. Within the new subject in schools and colleges, usually called Critical Thinking, the skill of finding missing assumptions is similarly prominent, as it is in that subject's public examinations. In this article we examine how school- and college-focused texts explain and teach ‘this very important skill’. The same texts also deal with the nature of assumptions, validity and (...) the role of stated reasons in arguments, and the way these matters are tackled will also be examined in our inquiry. In addition we explore what respected contributors to the critical thinking movement have had to say about some of these issues. (shrink)

Throughout the COVID-19 pandemic, the concept of solidarity has been invoked frequently. Much interest has centred around how citizens and communities support one another during times of uncertainty. Yet, empirical research which accounts and understands citizen’s views on pandemic solidarity, or their actual practices has remained limited. Drawing upon the analysis of data from 35 qualitative interviews, this article investigates how residents in England and Scotland enacted, understood, or criticised (the lack of) solidarity during the first national lockdown in the (...) United Kingdom in April 2020—at a time when media celebrated solidarity as being at an all-time high. It finds that although solidarity was practiced by some people, the perceived lack of solidarity was just as pronounced. We conclude that despite frequent mobilisations of solidarity by policy makers and other public actors, actual practices of solidarity are poorly understood—despite the importance of solidarity for public health and policy. (shrink)

Throughout history, anthropologists have confronted a number of uncomfortable truths around the supposed nature of reality. The anthropological maxim, "through the study of others we learn more about ourselves" has been sorely tested en route. Arguably, this challenge reached culmination during the 1970s and 80s, with several prominent social commentators from Geertz to Clifford suggesting that anthropologists had, in both past and present, been much more concerned with the study of 'others' than of 'ourselves'. In essence, this reflexive critique suggested (...) that ethnographers were in the business of writing fiction and more insidiously came to the field equipped with a set of assumptions and presuppositions about the world in all its variety. These universal verities functioned to reduce all subjects of study into conformity with the observer's sense of what was real and of import and what was not and inconsequential. (shrink)

Photonic Crystals is the first book to address one of the newest and most exciting developments in physics--the discovery of photonic band-gap materials and their use in controlling the propagation of light. Recent discoveries show that many of the properties of an electron in a semiconductor crystal can apply to a particle of light in a photonic crystal. This has vast implications for physicists, materials scientists, and electrical engineers and suggests such possible developments as an entirely optical computer. Combining cutting-edge (...) research with the basic theoretical concepts behind photonic crystals, the authors present to undergraduates and researchers a concise, readable, and comprehensive text on these novel materials and their applications. The first chapters develop the theoretical tools of photonic crystals in a broad, intuitive fashion, starting from nothing more than Maxwell's equations and Fourier analysis, and include analogies to traditional solid-state physics and quantum theory. There follows an investigation of the unique phenomena that take place within photonic crystals, at defect sites, and at surfaces and interfaces. The authors offer a new treatment of the traditional multilayer film (a one-dimensional photonic crystal), which allows for the extension to higher dimensions and more complex geometries. After exploring the capabilities of photonic crystals to guide and localize light, the authors demonstrate how these notions can be put to work. (shrink)

From the New York Times-bestselling author of Where Good Ideas Come From and Everything Bad Is Good for You, a new look at the power and legacy of great ideas. In this illustrated volume, Steven Johnson explores the history of innovation over centuries, tracing facets of modern life (refrigeration, clocks, and eyeglass lenses, to name a few) from their creation by hobbyists, amateurs, and entrepreneurs to their unintended historical consequences. Filled with surprising stories of accidental genius and brilliant mistakes-from the (...) French publisher who invented the phonograph before Edison but forgot to include playback, to the Hollywood movie star who helped invent the technology behind Wi-Fi and Bluetooth-How We Got to Now investigates the secret history behind the everyday objects of contemporary life. In his trademark style, Johnson examines unexpected connections between seemingly unrelated fields: how the invention of air-conditioning enabled the largest migration of human beings in the history of the species-to cities such as Dubai or Phoenix, which would otherwise be virtually uninhabitable; how pendulum clocks helped trigger the industrial revolution; and how clean water made it possible to manufacture computer chips. Accompanied by a major six-part television series on PBS, How We Got to Now is the story of collaborative networks building the modern world, written in the provocative, informative, and engaging style that has earned Johnson fans around the globe. (shrink)

Steven Higgins and Vivienne Baumfield have recently attempted to defend the much discussed idea of general thinking skills against attacks from three quarters: what they regard as a priori objections, which they liken to Zeno's paradox that Achilles will not catch the tortoise; domains theories of knowledge, which oppose the idea of thinking skills being general and transcending domains; and the claim that experts use subject specific knowledge, and don't use general thinking skills. We examine these defences and find them (...) flawed and worrying. We conclude that this is a domain in serious need of a priori approaches. (shrink)

BackgroundStory recall tests have shown variable sensitivity to rate of cognitive decline in individuals with Alzheimer’s disease biomarkers. Although SR tasks are typically scored by obtaining a sum of items recalled, item-level analyses may provide additional sensitivity to change and AD processes. Here, we examined the difficulty and discrimination indices of each item from the Logical Memory SR task, and determined if these metrics differed by recall conditions, story version, lexical categories, serial position, and amyloid status.Methodsn = 1,141 participants from (...) the Wisconsin Registry for Alzheimer’s Prevention longitudinal study who had item-level data were included in these analyses, as well as a subset of n = 338 who also had amyloid positron emission tomography imaging. LM data were categorized into four lexical categories, and by serial position. We calculated difficulty and discriminability/memorability by item, category, and serial position and ran separate repeated measures ANOVAs for each recall condition, lexical category, and serial position. For the subset with amyloid imaging, we used a two-sample t-test to examine whether amyloid positive and amyloid negative groups differed in difficulty or discrimination for the same summary metrics.ResultsIn the larger sample, items were more difficult in the delayed recall condition across both story A and story B. Item discrimination was higher at delayed than immediate recall, and proper names had better discrimination than any of the other lexical categories or serial position groups. In the subsample with amyloid PET imaging, proper names were more difficult for Aβ+ than Aβ−; items in the verb and “other” lexical categories and all serial positions from delayed recall were more discriminate for the Aβ+ group compared to the Aβ− group.ConclusionThis study provides empirical evidence that both LM stories are effective at discriminating ability levels and amyloid status, and that individual items vary in difficulty and discrimination by amyloid status, while total scores do not. These results can be informative for the future development of sensitive tasks or composite scores for early detection of cognitive decline. (shrink)