In the context of discovery-oriented hypothesis testing research, behavioral scientists widely accept a convention for false positive (α) and false negative error rates (β) proposed by Jacob Cohen, who deemed the general relative seriousness of the antecedently accepted α = 0.05 to be matched by β = 0.20. Cohen’s convention not only ignores contexts of hypothesis testing where the more serious error is the β-error. Cohen’s convention also implies for discovery-oriented hypothesis testing research that a statistically (...) significant observed effect is four times more probable to be a mistaken discovery than for a statistically significant true observed effect to be independently replicable. In the long run, Cohen’s convention thus is epistemically harmful to the development of a progressive science of human behavior, making its acceptance crucial in explaining the replication crisis in behavioral science. The balance between α- and β-errors generally ought to be struck using both epistemic and practical considerations. Yet epistemic considerations alone imply that making a genuine contribution to the body of knowledge in behavioral science requires error rates that are not only small but also symmetrical. (shrink)

The categorical imperative can be construed as a universalization test for moral permissibility. False negatives of the categorical imperative would be maxims failing this test, despite the permissibility of their actions; maxims like: ‘I’ll withdraw all my savings on April 15th’. Examples of purported false negatives familiar from the literature can be grouped into three general categories, and dispatched by applying category-specific methods for proper formulation of their maxims, or for proper testing. Methods for reformulating failing maxims, such (...) as the addition of appropriate conditional clauses, do not generate false-positive counterexamples in other instances. (shrink)

Objective: To determine if the medical record might overestimate the quality of care through false, and potentially unethical, documentation by physicians.Design: Prospective trial comparing two methods for measuring the quality of care for four common outpatient conditions: structured reports by standardised patients who presented unannounced to the physicians’ clinics, and abstraction of the medical records generated during these visits.Setting: The general medicine clinics of two veterans affairs medical centres.Participants: Twenty randomly selected physicians from among eligible second and third year (...) internal medicine residents and attending physicians.Main measurements: Explicit criteria were used to score the medical records of physicians and the reports of SPs generated during 160 visits . Individual scoring items were categorised into four domains of clinical performance: history, physical examination, treatment, and diagnosis. To determine the false positive rate, physician entries were classified as false positive , false negative, true positive, and true negative.Results: False positives were identified in the medical record for 6.4% of measured items. The false positive rate was higher for physical examination and diagnosis than for history and treatment . For individual physician subjects, the false positive rate ranged from 0.098 to 0.397.Conclusions: These data indicate that the medical record falsely overestimates the quality of important dimensions of care such as the physical examination. Though it is doubtful that most subjects in our study participated in regular, intentional falsification, we cannot exclude the possibility that false positives were in some instances intentional, and therefore fraudulent, misrepresentations. Further research is needed to explore the questions raised but incompletely answered by this research. (shrink)

ABSTRACTThe negativity bias is the tendency for individuals to give greater weight, and often exhibit more rapid and extreme responses, to negative than positive information. Using the Deese-Roediger-McDermott illusory memory paradigm, the current study sought to examine how the negativity bias might affect both correct recognition for negative and positive words and false recognition for associated critical lures, as well as how trait neuroticism might moderate these effects. In two experiments, participants studied lists of words (...) composed of semantic associates of an unpresented word. Half of the lists were comprised of positive words and half were comprised of negative words. As expected, individuals remembered negative list words better than positive list words, consistent with a negativity bias in correct recognition. When tested immediately, individuals also exhibited greater false memory for negative versus positive critical lures. When tested after a 24-hr delay... (shrink)

To investigate the effects of mood on people's end-of-life treatment decisions and their false memories of those decisions, participants took part in two sessions. At Time 1, participants were experimentally induced into positive or negative moods. They decided whether they would want to receive or refuse treatments in a range of hypothetical medical scenarios, such as tube feeding while in a coma. Four weeks later, at Time 2, participants were induced into the same or the opposite mood (...) and made these decisions a second time. They also recalled their previous decisions. Participants in negative moods at Time 2 changed more of their current decisions and falsely remembered more of their previous decisions than participants in positive moods. These findings suggest that people's current moods influence whether they change their treatment decisions; current decisions in turn bias recall of past decisions. (shrink)

The aim of our experiment was to analyse the effect of the emotional valence (positive, negative, or neutral) on true and false recognition, matching the arousal, frequency, concreteness, and associative strength of the study and recognition words. Fifty younger adults and 46 healthy older adults performed three study tasks (with words of different valence: positive, negative, neutral) and their corresponding recognition tests. Two weeks later, they performed the three recognition tests again. The results show that (...) words with a negative valence produced less true recognition and less false recognition than words with a positive or neutral valence, in both younger and older adults, on the immediate recognition test. This pattern of results was also found in the younger adults on the delayed recognition test, whereas in the older participants, these differences disappeared. Thus, when arousal is controlled, both younger and older adults tend to recognise negative information worse than positive or neutral information, but they also commit fewer errors. Results would suggest that the greater arousal commonly associated with negative stimuli, rather than their own valence, could explain some of the contradictory results found in the literature. (shrink)

Sometimes we make mistakes, even when we try to do our best. When those mistakes are about normative matters, such as what is required, this leads to a puzzle. This puzzle arises from the possibility of misleading evidence about what rationality requires. I argue that the best way to solve this puzzle is to distinguish between two kinds of evaluation: requirement and appraisal. The strategy I defend connects three distinct debates in epistemology, ethics, and normativity: the debate over how our (...) theories of epistemic rationality should accommodate misleading evidence, the debate over the relationship between complying with requirements and deserving particular appraisals, and the debate over whether normative ignorance can excuse. Part 1 shows how three apparently plausible claims about epistemic rationality generate a puzzle when agents have misleading evidence about what rationality requires. Part 2 solves this puzzle by distinguishing between evaluations of requirement and appraisal and rejecting the idea that one is required to conform to the Enkratic Principle. I argue instead that complying with the Enkratic Principle provides defeasible evidence that the agent should be positively appraised. One of the consequences of this solution is that false normative beliefs can sometimes excuse agents from negative appraisal they would otherwise deserve for violating requirements. Part 3 defends the view that false normative belief can sometimes excuse against the rival views that false normative belief always excuses, and that false normative belief never excuses. I argue that false normative belief can sometimes excuse violations of requirements, when it is the case that the agent has done what it is reasonable to expect of her. (shrink)

Three claims are widely held and individually plausible, but jointly inconsistent: (1) Negative actions (intentional omissions, refrainments, etc.) are genuine actions; (2) All actions are events; (3) Some, and perhaps all, negative actions aren't events, but absences thereof (when I omit to raise my arm, no omission-event occurs; what happens is just that no arm-raising occurs). Drawing on resources from metaphysics and the philosophy of language, I argue that (3) is false. Negative actions are events, just (...) as ordinary actions are. Moreover, each token negative action is identical to a token positive event, so we can adopt this realist view of negative actions without adding metaphysically negative entities (absences, negative states of affairs) to our ontology. (shrink)

ICD-10 and DSM-5 do not provide clear diagnosing guidelines for DID, making it difficult to distinguish ‘genuine’ DID from imitated or false-positive cases. This study explores meaning which patients with false-positive or imitated DID attributed to their diagnosis. 85 people who reported elevated levels of dissociative symptoms in SDQ-20 participated in clinical assessment using the Trauma and Dissociation Symptoms Interview, followed by a psychiatric interview. The recordings of six women, whose earlier DID diagnosis was disconfirmed, were (...) transcribed and subjected to interpretative phenomenological analysis. Five main themes were identified: endorsement and identification with the diagnosis. The notion of dissociative parts justifies identity confusion and conflicting ego-states. Gaining knowledge about DID affects the clinical presentation. Fragmented personality becomes an important discussion topic with others. Ruling out DID leads to disappointment or anger. To avoid misdiagnoses, clinicians should receive more systematic training in the assessment of dissociative disorders, enabling them to better understand subtle differences in the quality of symptoms and how dissociative and non-dissociative patients report them. This would lead to a better understanding of how patients with and without a dissociative disorder report core dissociative symptoms. Some guidelines for a differential diagnosis are provided. (shrink)

I aim to clarify the relationship between the success of a theory and the truth of that theory. This has been a central issue in the debates between realists and anti-realists. Realists assume that success is a reliable indicator of truth, but the details about the respects in which success is a reliable indicator or test of truth have been largely left to our intuitions. Lewis (Synthese 129:371–380, 2001) provides a clear proposal of how success and truth might be connected, (...) comparing a test of success of our theories to medical tests with low rates of false positives and false negatives. But, contrary to what Lewis claims, I argue that it is not enough for the realist to undercut the claim that success is not a reliable indicator of truth. Rather, the realist must show that our current best theories are likely true. Further, I argue that tests in science are unlike medical tests in a number of important ways. (shrink)

In a recent article, Erik Wielenberg has argued that positive skeptical theism fails to circumvent his new argument from apparent gratuitous evil. Wielenberg’s new argument focuses on apparently gratuitous suffering and abandonment, and he argues that negative skeptical theistic responses fail to respond to the challenge posed by these apparent gratuitous evils due to the parent–child analogy often invoked by theists. The greatest challenge to his view, he admits, is positive skeptical theism. To stave off this potential (...) problem with his argument, he maintains that positive skeptical theism entails divine deception, which creates insuperable problems for traditional theism. This essay shows that Wielenberg is mistaken. Although positive skeptical theism claims that we should expect the appearance of gratuitous evil given Christian theism, this does not entail divine deception. I maintain that God is not a deceiver on positive skeptical theism because God does not meet two requirements to be a deceiver: God does not intend to cause people to believe any false propositions and God does not provide evidence for someone to justifiably believe a false proposition. Consequently, Wielenberg’s new argument from evil fails and positive skeptical theism remains a viable response to the evidential argument from evil. (shrink)

Existing research on the financial implications of corporate social responsibility (CSR) for firms has predominantly focused on positive aspects of CSR, overlooking that firms also undertake actions and initiatives that qualify as negative CSR. Moreover, studies in this area have not investigated how both positive and negative CSR affect the financial risk of firms. As such, in this research, the authors provide a framework linking both positive and negative CSR to idiosyncratic risk of firms. (...) While investigating these relationships, the authors also analyze the moderating role of financial leverage of firms. Overall, analysis of secondary information for firms from multiple industries over the years 2000–2009 shows that CSR has a significant effect on the idiosyncratic risk of firms, with positive CSR reducing risk and negative CSR increasing it. Results also show that the reduction in risk from positive CSR is not guaranteed, with firms having high levels of financial leverage witnessing lower idiosyncratic risk reduction. (shrink)

Diagnostic frameworks are essential to many scientific and technological activities and clinical practice. This study examines the main fundamental aspects of such frameworks. The three components required for all diagnoses are identified and examined, i.e. their normative dimension, temporal nature and structure, and teleological perspective.The normative dimension of a diagnosis is based on (1) epistemic values when associated with Hempel's inductive risk concerning the balance between false‐positive and false‐negative outcomes, leading to probabilistic judgements; and (2) non‐epistemic (...) values when related to ideas such as well‐being, normality, illness, etc, as idealized norms or ideal points of reference.It should be noted that medical diagnoses match the three necessary components, while some essential diagnostic frameworks – the taxonomies ofGordon andNANDA– in nursing lack some components. The main lack is normative as the most popular frameworks in nursing diagnosis seem to be descriptions of observed reality rather than normative and value‐based judgements in which both epistemic and non‐epistemic values may coexist. (shrink)

We argue that some algorithms are value-laden, and that two or more persons who accept different value-judgments may have a rational reason to design such algorithms differently. We exemplify our claim by discussing a set of algorithms used in medical image analysis: In these algorithms it is often necessary to set certain thresholds for whether e.g. a cell should count as diseased or not, and the chosen threshold will partly depend on the software designer’s preference between avoiding false positives (...) and false negatives. This preference ultimately depends on a number of value-judgments. In the last section of the paper we discuss some general principles for dealing with ethical issues in algorithm-design. (shrink)

Current symptom-based DSM and ICD diagnostic criteria for mental disorders are prone to yielding false positives because they ignore the context of symptoms. This is often seen as a benign flaw because problems of living and emotional suffering, even if not true disorders, may benefit from support and treatment. However, diagnosis of a disorder in our society has many ramifications not only for treatment choice but for broader social reactions to the diagnosed individual. In particular, mental disorders impose a (...) sick role on individuals and place a burden upon them to change; thus, disorders decrease the level of respect and acceptance generally accorded to those with even annoying normal variations in traits and features. Thus, minimizing false positives is important to a pluralistic society. The harmful dysfunction analysis of disorder is used to diagnose the sources of likely false positives, and propose potential remedies to the current weaknesses in the validity of diagnostic criteria. (shrink)

This study aims to analyze what drives and prevents the purchasing of eco-friendly products across different consumer groups and develops a conceptual model embracing the positive altruistic, positive ego-centric, and negative ego-centric antecedents of eco-friendly product purchase intention and behavior. We empirically validate the conceptual model for green and non-green consumers. Data are analyzed using structural equation modeling and multi-group analysis of the two groups. The results confirm the relevance of the determining factors in the model and (...) show significant differences in eco-friendly product purchasing patterns between green and non-green consumers. Altruistic motives are more important for green than for non-green consumers. Negative ego-centric motives affect the purchase intentions of non-green consumers more than the intentions of green consumers, whereas the impact of negative motives on behavior is stronger for green than for non-green consumers. The first contribution of this paper is the development and testing of a parsimonious model of eco-friendly products purchasing that embraces both positive and negative antecedents, which have been theoretically suggested in the past but have rarely been empirically tested together. The second contribution of this study is that it develops insight into the specific antecedents of eco-friendly products purchasing for green and non-green consumers to assess potential similarities and differences in eco-friendly products purchasing process, the hypothesized antecedents, their impact on eco-friendly products purchase intention and behavior, and the intention–behavior relation. (shrink)

IntroductionDespite a growing interest in the field, scarce narrative studies have delved into adolescents’ psychological experiences related to global emergencies caused by infective diseases. The present study aims to investigate adolescents’ narratives on positive and negative experiences related to COVID-19.MethodsItalian adolescents, 2,758, completed two narrative tasks on their most negative and positive experiences during the COVID-19 emergency. Data were analyzed by modeling an analysis of emergent themes.Results“Staying home as a limitation of autonomy,” “School as an educational, (...) not relational environment,” the impact of a “new life routine,” and experiencing “anguish and loss” are the four emergent themes for negative experiences. As for positive experiences, the four themes were “Being part of an extraordinary experience,” “Discovering oneself,” “Re-discovering family,” and “Sharing life at a distance.”ConclusionAuthors discuss the impact of COVID-19 on adolescents’ developmental tasks, such as identity processes and autonomy acquisition. (shrink)

We weigh the presumed benefts of routinely searching all research scans for incidental fndings against its substantial risks, including false-positive and false-negative fndings, and the possibility of triggering unnecessary, costly evaluations and perhaps harmful treatments. We argue that routinely searching for IFs may not maximize benefts and minimize risks to participants.

I explore how many within modern industrial societies currently understand, manage, and respond to their emotional suffering. I argue that this understanding and management of suffering has radically altered in the last 30 years, creating a new model of suffering, “the negative model” (suffering is purposeless), which has largely replaced the “positive model” (suffering is purposeful) that prevailed in the 18th and 19th centuries. This shift has been hastened by what I call the “rationalization of suffering”—namely, the process (...) by which suffering is predominantly now understood in biological and psychiatric terms rather than in religious, philosophical, or moral. This process accompanied the great forces of secularization, medicalization unleashed at the enlightenment—forces gaining their modern expression through psychiatry, the behavioral psychotherapies, the happiness industries, as well as through aggressive market, individualistic, medical, and positivistic ideas and movements. This shift has entailed many socio/cultural implications important for anthropologists to explore further. (shrink)

The distinction between negative and positive liberty remains a standard approach to the idea of freedom in contemporary political theory. In Rethinking Positive and Negative Liberty, Maria Dimova-...

This book argues that the distinction between positive and negative freedom remains highly pertinent today, despite having fallen out of fashion in the late twentieth century. It proposes a new reading of this distinction for the twenty-first century, building on the work of Constant, Green and Berlin who led the historical development of these ideas. The author defends the idea that freedom is a dynamic interaction between two inseparable, yet sometimes fundamentally, opposed positive and negative concepts (...) - the yin and yang of freedom. Positive freedom is achieved when one succeeds in doing what is right, while negative freedom is achieved when one is able to advance one's wellbeing. In an environment of culture wars, resurging populism and challenge to progressive liberal values, recognising the duality of freedom can help us better understand the political dilemmas we face and point the way forward. The book analyses the duality of freedom in more philosophical depth than previous studies and places it within the context of both historical and contemporary political thinking. It will be of interest to students and scholars of liberalism and political theory. (shrink)

The phenomenon of multi-used stock photography in the news contradicts the photojournalism professional values of truthful and emotional depictions. This reality echoes other false images increasingly appearing in the media, including deepfakes and artificial intelligence. In the present study, a two (stock and staff photo) by two (positive and negative valence) quasi-experiment is conducted. The dependent variables include: 1) credibility; 2) self-reported arousal level; 3) emotional valence perceptions; 4) fixation duration; and 5) fixation count. Participants viewed staff (...) photos as more credible in both positive and negative valences. Negative photos were perceived as slightly less credible. Stock and staff photos were similarly arousing, received similar valence perceptions, and had similar gaze fixations and durations. Overall, participants perceived the genuine emotion portrayed truthfully in photojournalism as opposed to the faux emotion acted out in stock photos. (shrink)

It is well known that Bayes’ theorem (with likelihood ratios) can be used to calculate the impact of evidence, such as a ‘match’ of some feature of a person. Typically the feature of interest is the DNA profile, but the method applies in principle to any feature of a person or object, including not just DNA, fingerprints, or footprints, but also more basic features such as skin colour, height, hair colour or even name. Notwithstanding concerns about the extensiveness of databases (...) of such features, a serious challenge to the use of Bayes in such legal contexts is that its standard formulaic representations are not readily understandable to non-statisticians. Attempts to get round this problem usually involve representations based around some variation of an event tree. While this approach works well in explaining the most trivial instance of Bayes’ theorem (involving a single hypothesis and a single piece of evidence) it does not scale up to realistic situations. In particular, even with a single piece of match evidence, if we wish to incorporate the possibility that there are potential errors (both false positives and false negatives) introduced at any stage in the investigative process, matters become very complex. As a result we have observed expert witnesses (in different areas of speciality) routinely ignore the possibility of errors when presenting their evidence. To counter this, we produce what we believe is the first full probabilistic solution of the simple case of generic match evidence incorporating both classes of testing errors. Unfortunately, the resultant event tree solution is too complex for intuitive comprehension. And, crucially, the event tree also fails to represent the causal information that underpins the argument. In contrast, we also present a simple-to-construct graphical Bayesian Network (BN) solution that automatically performs the calculations and may also be intuitively simpler to understand. Although there have been multiple previous applications of BNs for analysing forensic evidence—including very detailed models for the DNA matching problem, these models have not widely penetrated the expert witness community. Nor have they addressed the basic generic match problem incorporating the two types of testing error. Hence we believe our basic BN solution provides an important mechanism for convincing experts—and eventually the legal community—that it is possible to rigorously analyse and communicate the full impact of match evidence on a case, in the presence of possible errors. (shrink)

Acts of criticism characteristically display a negative and a positive dimension. I undertake a qualified defense of the thesis that both dimensions are essential, at least in the case of logical criticism – criticism that relies either implicitly or explicitly on the resources of logic. Such criticism presupposes at least a minimal grasp on what is involved in ‘getting it right’ in the domain that is subjected to critique. In making the case I distinguish between positive and (...) negative logic. Traditional logic is positive insofar as it takes as primitive a positive notion, typically truth. I consider to what extent logic might be reconstructed on an exclusively negative basis – as a tool for avoiding falsity and fallacy. Negative logic faces serious obstacles which suggest a prima facie case that logical criticism is essentially, not just accidentally, positive. (shrink)

This study aims to analyze what drives and prevents the purchasing of eco-friendly products across different consumer groups and develops a conceptual model embracing the positive altruistic, positive ego-centric, and negative ego-centric antecedents of eco-friendly product purchase intention and behavior. We empirically validate the conceptual model for green and non-green consumers. Data are analyzed using structural equation modeling and multi-group analysis of the two groups. The results confirm the relevance of the determining factors in the model and (...) show significant differences in eco-friendly product purchasing patterns between green and non-green consumers. Altruistic motives are more important for green than for non-green consumers. Negative ego-centric motives affect the purchase intentions of non-green consumers more than the intentions of green consumers, whereas the impact of negative motives on behavior is stronger for green than for non-green consumers. The first contribution of this paper is the development and testing of a parsimonious model of eco-friendly products purchasing that embraces both positive and negative antecedents, which have been theoretically suggested in the past but have rarely been empirically tested together. The second contribution of this study is that it develops insight into the specific antecedents of eco-friendly products purchasing for green and non-green consumers to assess potential similarities and differences in eco-friendly products purchasing process, the hypothesized antecedents, their impact on eco-friendly products purchase intention and behavior, and the intention–behavior relation. (shrink)

In this article, our aim is to show why increasing the effectiveness of detecting doping fraud in sport by the use of artificial intelligence (AI) may be morally wrong. The first argument in favour of this conclusion is that using AI to make a non-ideal antidoping policy even more effective can be morally wrong. Whether the increased effectiveness is morally wrong depends on whether you believe that the current antidoping system administrated by the World Anti-Doping Agency is already morally wrong. (...) The second argument is based on the possibility of scenarios in which a more effective AI system may be morally worse than a less effective but non-AI system. We cannot, of course, conclude that the increased effectiveness of doping detection is always morally wrong. But our point is that whether the introduction of AI to increase detection of doping fraud is a moral improvement depends on the moral plausibility of the current system and the distribution of harm that will follow from false positive and false negative errors. (shrink)

Free swimming cells of the ciliated protozoan Tetrahymena are attracted to certain chemicals by chemokinesis. However, a special type of chemotaxis in response to a chemical gradient is found in cells gliding very slowly in semisolid media. In contrast to classical chemotaxis by leukocytes, which is solely positive towards chemo‐attractants, the oriented chemokinesis by gliding Tetrahymena involves both positive and negative elements. The major chemo‐attractants are peptides and/or proteins, and they may be compounds which signal the presence (...) of food in the natural environment of this freshwater phagotroph. (shrink)

This research examines the influence of social status, gender and family structure on parental values. Data are taken from the General Social Survey of six years in which parental value questions in standard form appeared. Logistic regression models are estimated for seven values representing three types of parental values: conformity, gender roles and self-direction. Results indicate that while social status has a positive effect on the preference of self-direction values and a negative effect on the valuation of conformity (...) and traditional gender roles, gender and family structure are also consistently related to characteristics parents consider important for children. Compared to men, women are more likely to endorse self-direction and less likely to value conformity and traditional gender roles in children. Women in single-parent families are also more likely than women in two-parent families to value conformity and gender roles. Discussions of the findings and directions for future research are provided. (shrink)

Contrary to recent work on the topic, I argue that, in the Sophist, Plato's Visitor does not posit any negative kinds or forms, such as the kind or form of the not-beautiful or not-being. My argument has a textual and a philosophical side. On the textual side, I argue that the Visitor does not posit negative kinds or forms. On the philosophical side, I argue that the Visitor does not need to posit any such entities because he can (...) reach his goals by appeal to difference. The latter conclusion suggests that an appeal to negative kinds or forms would be gratuitous and hence weaken the Visitor’s account. The textual result implies that we need not saddle him with this unsatisfactory view. Rather, by appeal to difference, the Visitor offers a unified account of ‘is not’ claims and false speech that relies on remarkably economical ontological resources. (shrink)

Affirmative action continues to divide. My aim in this paper is to present participants in the debate with a new distinction, namely one between negative and positive affirmative action. Whereas positive affirmative action has to do with certain goods, such as a place at a prestigious university or a job at a prestigious company, negative affirmative action has to do with certain bads, such as a firing or a sentence. I then argue that some of the (...) most prominent arguments in favor of affirmative action speak at least as much in favor of negative as positive affirmative action. At the same time, at least one of the most prominent arguments put forward against affirmative action speak less against negative affirmative action. Thus, the paper should redraw the battle lines in the affirmative action debate. (shrink)

It is shown that in every gauge the potential of the electromagnetic field in the presence of sources is resolved by an extension of the Helmholtz theorem into a solenoidal component and an irrotational component irrelevant for description of the field. Only irrotational components are affected by gauge transformations; in Coulomb gauge the irrotational component vanishes: the potential is solenoidal. The method of solution of the wave equation by use of positive- and negative-frequency parts is extended to solutions (...) of D'Alembert's equation, and applied to equations satisfied by the potential in Coulomb gauge and the electric and magnetic vectors. Fourier transforms of potentials specifying destruction/creation operators become time dependent in the presence of sources. Our central equation states this time dependence. Frequency parts of Maxwell's equations are obtained. When the retarded potential in Coulomb gauge is resolved into kinetic and dissipative components, the latter is shown to be in radiation gauge. Correspondingly, the energy/stress tensor is resolved into three components; the power/force density, into two: a kinetic and a dissipative component. Work done by the latter component is negative: energy and momentum are dissipated from matter to radiation. Boson quantization conditions are satisfied by the kinetic component of the retarded potential, but commutators of the dissipative component are determined by the current sources. The energy/stress tensor and Hamiltonian of the field in the presence of sources are derived from the classical Lagrangian density. The relation between the Hamiltonian and the energy is shown to agree with the time dependence of the destruction/creation operators in Heisenberg picture. (shrink)

Cellular circuits have positive and negative feedback loops that allow them to respond properly to noisy external stimuli. It is intriguing that such feedback loops exist in many cases in a particular form of coupled positive and negative feedback loops with different time delays. As a result of our mathematical simulations and investigations into various experimental evidences, we found that such coupled feedback circuits can rapidly turn on a reaction to a proper stimulus, robustly maintain its (...) status, and immediately turn off the reaction when the stimulus disappears. In other words, coupled feedback loops enable cellular systems to produce perfect responses to noisy stimuli with respect to signal duration and amplitude. This suggests that coupled positive and negative feedback loops form essential signal transduction motifs in cellular signaling systems. BioEssays 29: 85–90, 2007. © 2006 Wiley Periodicals, Inc. (shrink)

This paper examines the impact on firm value created by investor reaction to same day news of corporate social responsibility and corporate social irresponsibility activities. First, using trading volume, the authors establish that the perceived value of moral capital generated by news involving institutional stakeholders is less clear to investors than that of the news involving technical stakeholders. Subsequently, the authors analyze abnormal returns from 565 unique firm events—each comprising at least one positive and one negative stakeholder news (...) item. Using signaling theory, the authors demonstrate that news of the number of CSR activities involving institutional groups counteracts the effects of same day CSiR news in an inverted U-shaped fashion. In contrast, they find that news of the number of CSR activities involving technical groups mitigates the effects of same day CSiR news in a U-shaped fashion. (shrink)

Recent debates in psychopathy studies have articulated concerns about false-positives in assessment and research sampling. These are pressing concerns for research progress, since scientific quality depends on sample quality, that is, if we wish to study psychopathy we must be certain that the individuals we study are, in fact, psychopaths. Thus, if conventional assessment tools yield substantial false-positives, this would explain why central research is laden with discrepancies and nonreplicable findings. This paper draws on moral psychology in order (...) to develop tentative theory-driven exclusion criteria applicable in research sampling. Implementing standardized procedures to discriminate between research participants has the potential to yield more homogenous and discrete samples, a vital prerequisite for research progress in etiology, epidemiology, and treatment strategies. (shrink)