The α‐actinins are an ancient family of actin‐binding proteins that play structural and regulatory roles in cytoskeletal organisation and muscle contraction. α‐actinin‐3 is the most‐highly specialised of the four mammalian α‐actinins, with its expression restricted largely to fast glycolytic fibres in skeletal muscle. Intriguingly, a significant proportion (∼18%) of the human population is totally deficient in α‐actinin‐3 due to homozygosity for a premature stop codon polymorphism (R577X) in the ACTN3 gene. Recent work in our laboratory has revealed a strong association (...) between R577X genotype and performance in a variety of athletic endeavours. We are currently exploring the function and evolutionary history of the ACTN3 gene and other α‐actinin family members. The α‐actinin family provides a fascinating case study in molecular evolution, illustrating phenomena such as functional redundancy in duplicate genes, the evolution of protein function, and the action of natural selection during recent human evolution. BioEssays 26:786–795, 2004. © 2004 Wiley Periodicals, Inc. (shrink)

In humans, there are two skeletal muscle α‐actinins, encoded by ACTN2 and ACTN3, and the ACTN3 genotype is associated with human athletic performance. Remarkably, approximately 1 billion people worldwide are deficient in α‐actinin‐3 due to the common ACTN3 R577X polymorphism. The α‐actinins are an ancient family of actin‐binding proteins with structural, signalling and metabolic functions. The skeletal muscle α‐actinins diverged ∼250–300 million years ago, and ACTN3 has since developed restricted expression in fast muscle fibres. Despite ACTN2 and ACTN3 retaining considerable (...) sequence similarity, it is likely that following duplication there was a divergence in function explaining why α‐actinin‐2 cannot completely compensate for the absence of α‐actinin‐3. This paper focuses on the role of skeletal muscle α‐actinins, and how possible changes in functions between these duplicates fit in the context of gene duplication paradigms. (shrink)

Chief Executive Officers and other organizational leaders can affect how corporate social responsibility initiatives are perceived in their organizations. However, in order to be successful with regard to promoting CSR, leaders need to have strong network competencies and to move beyond charismatic leadership. In this paper we offer a critique of charismatic leadership as it relates to CSR, posit that the intellectual stimulation brought about by transformational leadership is more important in this regard, propose that internal and networking is a (...) leadership competence highly relevant to CSR, and emphasize the importance of working through highly credible opinion leaders in promoting CSR. (shrink)

IntroductionThere is a paucity of clinical guidelines for the routine assessment of maladaptive reproductive grief reactions in outpatient primary care and OB-GYN settings in the United States. Because of the disenfranchised nature of perinatal grief reactions, many clinicians may be apt to miss or dismiss a grief reaction that was not identified in the perinatal period. A significant number of those experiencing a reproductive loss exhibit signs of anxiety, depression, or post-traumatic stress disorder. Reproductive losses are typically screened for and (...) recorded numerically as part of a woman’s well-visit intake, yet this process often fails to identify patients emotionally troubled by a prior pregnancy loss.Materials and MethodsA summative content analysis of 164 recent website blogs from female participants who self-reported having experienced a miscarriage or abortion in their lifetime was conducted. The narratives were reviewed for details regarding the time span between the pregnancy loss and the composition of the blog post. The stories were analyzed for subsequent relationship problems and detrimental mental health conditions. Maladaptive reactions were contrasted for those that indicated a greater than 12 months’ time-lapse and those who had not.ResultsMore than a third of the women reported in the narrative that at least one year or more had passed since experiencing the miscarriage or abortion. For those women, the median time span between the loss and composing the blog was 4 years with a range of 47 years. Mental health conditions attributed to the reproductive loss by those who reported longer bereavement times included subsequent relationship problems, substance misuse, depression, suicidal ideation, and PTSD. The percent of reported maladaptive issues was more than double for those who reported that a year or more had passed since the loss of the pregnancy.DiscussionGrief reactions following the loss of a pregnancy may be prolonged or delayed for several months which can contribute to adverse biopsychosocial outcomes. Recognition and treatment of maladaptive grief reactions following a pregnancy loss are critical. Screening methods should be enhanced for clinicians in medical office settings to help identify and expedite the appropriate mental health assistance. (shrink)

The American Journal of Bioethics, Volume 11, Issue 9, Page 42-43, September 2011.

BackgroundSexual minority (SM) older adults experience mental health disparities. Psychiatric disorders and neuropsychiatric symptoms (NPS) are risk factors for cognitive decline. Although older people in same-sex (SSR) compared to mixed-sex relationships (MSR) perform more poorly on cognitive screening tests, prior studies found no differences in rates of dementia diagnosis or neuropsychological profiles. We sought to explore the role of NPS on neurocognitive outcomes for SM populations. We compared cognitive performance and structural brain parameters of older adults in SSR and MSR.MethodsData (...) were originally collected at Alzheimer's Disease Research Centers (ADRCs). Inclusion criteria were: age of 55+ years, a study partner identified as a spouse/partner, and availability of T1-MRI brain volumes/thickness. Participants were labeled as either SSR or MSR based on their/their co-participant's reported sex. We identified 1,073 participants (1,037 MSR−555 cognitively unimpaired [CU]; 36 SSR−23 CU) with structural MRI data, Mini-Mental State Exam (MMSE), and Neuropsychiatric Inventory Questionnaire (NPI-Q) scores. A subset of the overall sample completed comprehensive neuropsychological assessment (n = 939; 908 MSR−494 CU; 31 SSR−22 CU). Covariates included in statistical models were age, sex, education, total intracranial volume, and apolipoprotein E genotype.ResultsMultivariate general linear models showed significant diagnosis-by-relationship interaction effects on the left parahippocampal gyrus volume. After stratification by relationship group, only cognitively impaired (CI) MSR had significantly smaller left parahippocampal volumes than MSR-CU. The SSR group showed better episodic memory performance. Severity of neuropsychiatric symptoms was negatively associated with volume/thickness of bilateral fronto-temporal areas and with MMSE scores, predominantly in the MSR group.ConclusionIn our study, MSR participants presented with a more compromised cognitive profile than SSR participants. MSR-CI participants showed significantly smaller left medio-temporal volumes, a neural signature of AD. Neuropsychiatric symptoms predicted smaller fronto-temporal volumes in the MSR more consistently than in the SSR group. These findings may be due to unexplored protective factors against cognitive decline in SM elders. Indeed, social support has been proposed as a protective factor warranting future investigation. (shrink)

This paper addresses the potentially interactive effects of descriptive and injunctive norm perceptions on an unethical workplace behavior: counterproductive work behavior perpetration. We draw on the Focus Theory of Normative Conduct and its conceptual distinction between norm types to refine research on this topic. We also test a person-by-environment interaction to determine whether the interactive effects of these norms for CWB are enhanced among employees reporting a stronger need to belong to social groups. In two studies, predictors were assessed in (...) an initial survey and the dependent variable was assessed weeks later. Individuals employed across a range of industries served as participants. In Study 1, descriptive and injunctive norm perceptions of CWB interacted to predict CWB perpetration. This finding was replicated in Study 2. Additionally, Study 2 demonstrated that the interaction between the two norm types was especially strong among individuals high in NTB. Results suggest that to decrease CWB perpetration, organizations may profitably leverage the persuasive effects of “social norms marketing” to alter employee perceptions of the typicality and level of approval for CWBs. This is the first study to demonstrate that both descriptive and injunctive norm perceptions predict CWB perpetration. The demonstrated three-way interaction between the two norm types and NTB advances existing theory regarding the cognitive and motivational mechanisms underlying normative social influence. (shrink)

Boys and men tend to underperform in language education, and they are also underrepresented in language-related fields. Research suggests that stereotypes can affect students’ performance and sense of belonging in academic subjects and test settings via stereotype threat. For example, girls and women sometimes underperform on math tests following reminders that math is for boys. We sought to test whether stereotypes that women have better language skills than men would affect men. In a series of four experiments (N = 542), (...) we tested the effect of explicit stereotype threats on men’s performance in language-related tasks, and their sense of belonging to language-related domains. We found little evidence for stereotype threat effects on men in language. Bayesian analysis suggested that the null hypothesis was consistently more likely than the alternative, and mini-meta analyses showed effect sizes near zero. Future research should explore other explanations for gender gaps in language. (shrink)

We report the identification of a recurrent, 520-kb 16p12.1 microdeletion associated with childhood developmental delay. The microdeletion was detected in 20 of 11,873 cases compared with 2 of 8,540 controls and replicated in a second series of 22 of 9,254 cases compared with 6 of 6,299 controls. Most deletions were inherited, with carrier parents likely to manifest neuropsychiatric phenotypes compared to non-carrier parents. Probands were more likely to carry an additional large copy-number variant when compared to matched controls. The clinical (...) features of individuals with two mutations were distinct from and/or more severe than those of individuals carrying only the co-occurring mutation. Our data support a two-hit model in which the 16p12.1 microdeletion both predisposes to neuropsychiatric phenotypes as a single event and exacerbates neurodevelopmental phenotypes in association with other large deletions or duplications. Analysis of other microdeletions with variable expressivity indicates that this two-hit model might be more generally applicable to neuropsychiatric disease. © 2010 Nature America, Inc. All rights reserved. (shrink)

The name of the third author was incomplete in the initial online publication. The original article has been corrected.

This study investigates the role of “moral” emotional traits—guilt proneness, shame proneness, empathic concern, and perspective taking—as predictors of workplace bullying perpetration. We also test and find support for a model derived from moral emotions literature and the sociometer theory of self-esteem in which the tendency to take reparative action following interpersonal transgressions mediates the buffering effect of guilt proneness on bullying. Data were obtained from working MBA students and advanced undergraduates during 2 survey sessions, 4 to 6 weeks apart. (...) Findings indicate that moral emotional traits may be useful to consider in personnel selection as a means to reduce workplace bullying. (shrink)

This hypothesis proposes that increased extracellular glutamate in Amyotrophic Lateral Sclerosis (ALS) and cerebral ischemia, currently viewed as a trigger for excitotoxicity, is actually beneficial as it stimulates the utilization of glutamate as metabolic fuel. Renewed appreciation of glutamate oxidation by ischemic neurons has raised questions regarding the role of extracellular glutamate in ischemia. Is it detrimental, as suggested by excitotoxicity in early in vitro studies, or beneficial, as suggested by its oxidation in later in vivo studies? The answer may (...) depend on the activity of N‐methyl‐D‐aspartate (NMDA) glutamate receptors. Early in vitro procedures co‐activated NMDA receptors (NMDARs) containing 2A (GluN2A) and 2B (GluN2B) subunits, an event now believed to trigger excitotoxicity; however, during in vivo ischemia D‐serine and zinc molecules are released and these ensure only GluN2B receptors are stimulated. This not only prevents excitotoxicity but also initiates signaling cascades that allow ischemic neurons to import and oxidize glutamate. (shrink)

This collection of writings offers a glimpse into the minds of three N.A.A.C.P. leaders who occupied the center of black thought and action during some of the most troublesome and pivotal times of the civil rights movement. The volume delineates fifty-seven years of the N.A.A.C.P.'s program under the successive direction of James Weldon Johnson, Walter White, and Roy Wilkins. These writings illustrate the vital roles of these three leaders in building a peoples liberation, underscoring not only their progressive influence throughout (...) their time in power, but also a vision of the future as race relations enter the 21st Century. Much of the material, notably "The Secretary's Reports to the Board," is published here for the first time, offering an invaluable resource for those seeking a deeper knowledge of the history of race in America. (shrink)

This article describes a qualitative content analysis of 37 elementary examples of social studies Inquiry Design Models (C3 Teachers, 2023a), conducted with the purpose of identifying the core student skills necessary to successfully engage in these inquiries. Prior research identifies core inquiry teaching skills for teachers across content areas and grade bands, but there has been little research on the demands placed on elementary students in social studies inquiry. In this study, we identify 33 broad skills, each of which are (...) observable and teachable. Four of these skills occurred in high frequency: generation of new ideas ( n = 152), writing process ( n = 110), linking evidence with claims ( n = 65), and discussion ( n = 63). These most frequently occurring skills all required higher-level and/or critical thinking. Implications for preservice and in-service teacher education are discussed. (shrink)

How Doctors Think defines the nature and importance of clinical judgment. Although physicians make use of science, this book argues that medicine is not itself a science but rather an interpretive practice that relies on clinical reasoning. A physician looks at the patient's history along with the presenting physical signs and symptoms and juxtaposes these with clinical experience and empirical studies to construct a tentative account of the illness. How Doctors Think is divided into four parts. Part one introduces the (...) concept of medicine as a practice rather than a science; part two discusses the idea of causation; part three delves into the process of forming clinical judgment; and part four considers clinical judgment within the uncertain nature of medicine itself. In How Doctors Think, Montgomery contends that assuming medicine is strictly a science can have adverse side effects, and suggests reducing these by recognizing the vital role of clinical judgment. (shrink)

In Moral Passages, Kathryn Pyne Addelson presents an original moral theory suited for contemporary life and its moral problems. Her basic principle is that knowledge and morality are generated in collective action, and she develops it through a critical examination of theories in philosophy, sociology and women's studies, most of which hide the collective nature and as a result hide the lives and knowledge of many people. At issue are the questions of what morality is, and how moral theories (...) (whether traditional or feminist) are implemented. Addelson takes up a large number of historical cases and contemporary social problems, including teen pregnancy, contraception and abortion, and gay rights. These cases allow her to see how the knowledge and lives of some people are declared deviant or immoral, while those of others appear to show the public consensus. One case she uses throughout the book is Margaret Sanger's early work on birth control with the anarcho-syndicalist movement--a revisionist history that reveals rather than hides the collective nature of morality and knowledge. Addelson shows how the usual individualist philosophies promote theories which hide the authority of the professionals who make them. A collectivist approach, she argues, must show the part professionals play in collective action. Her aim is to allow professional knowledge makers to be morally and intellectually responsible. Based on Addelson's twenty years of work in feminist philosophy and interactionist sociology as well as her long-standing involvement in women's community organization, Moral Passages investigates how morality and knowledge are collectively enacted in today's world. (shrink)

The article “Revive and Refuse: Capacity, Autonomy, and Refusal of Care After Opioid Overdose,” Marshall et al. (2024) highlights the critical issue of care after an opioid overdose. “Revive and Re...

Pretty much everyone knows that our genes have at least something to do with how able or how high achieving we are. Some believe that we should not speak of this common knowledge, nor inquire into how genetic influence works or what it might mean. If we do not keep an open mind to the fact of genetic influence on academic achievement, however, then we cannot explore its possible implications. And if we do not consider the implications, then we cannot, (...) as a society, harness any potential benefits or avoid possible pitfalls. So that's what this essay is about—exploring what behavioral genetics research might be able to offer to educational theory, policy, and practice.We cannot yet use biological information to make accurate predictions for all children. We do know, however, that academic achievement is heritable, which is to say that differences between individuals are influenced by differences in their DNA. If genes are part of the problem for some pupils (to take the negative spin on this), then it seems likely that studying them could be part of a solution. And that's what behavioral geneticists are trying to do—to chart and understand pathways from DNA to behavior and to identify interventions that can maximize outcomes for all. The fact is, though, that we have an awfully long way to go. (shrink)

Sometimes form-meaning mappings in language are not arbitrary, but iconic: they depict what they represent. Incorporating iconic elements of language into a compositional semantics faces a number of challenges in formal frameworks as evidenced by the lengthy literature in linguistics and philosophy on quotation/direct speech, which iconically portrays the words of another in the form that they were used. This paper compares the well-studied type of iconicity found with verbs of quotation with another form of iconicity common in sign languages: (...) classifier predicates. I argue that these two types of verbal iconicity can, and should, incorporate their iconic elements in the same way using event modification via the notion of a context dependent demonstration. This unified formal account of quotation and classifier predicates predicts that a language might use the same strategy for conveying both, and I argue that this is the case with role shift in American Sign Language. Role shift is used to report others’ language and thoughts as well as their actions, and recently has been argued to provide evidence in favor of Kaplanian “monstrous” indexical expressions. By reimagining role shift as involving either quotation for language demonstrations or “body classifier” predicates for action demonstrations, the proposed account eliminates one major argument for these monsters coming from sign languages. Throughout this paper, sign languages provide a fruitful perspective for studying quotation and other forms of iconicity in natural language due to their lack of a commonly used writing system which is otherwise often mistaken as primary data instead of speech, the rich existing literature on iconicity within sign language linguistics, and the ability of role shift to overtly mark the scope of a language report. In this view, written language is merely a special case of a more general phenomenon of sign and speech demonstration, which accounts more accurately for natural language data by permitting more strict or loose verbatim interpretations of demonstrations through the context dependent pragmatics. (shrink)

The authors examine the nature of the relationship between social science and philosophy and address the sort of work social science should do, and the role and sorts of claims that an accompanying philosophy should engage in. In particular, the authors reintroduce the question of ontology, an area long overlooked by philosophers of social science, and present a cricital engagement with the work of Roy Bhaskar. The book argues against the excesses of philosophising and commits itself to a philosophical approach (...) more deeply grounded in the social sciences. (shrink)

"Change is not merely necessary to life--it is life." That's Alvin Toffler, characteristically stating the profound in a profoundly direct way. And yes, even when we see change coming--as we're about to graduate from school, take a new job, get married--it's still not so easy to accept. And when we don't see it coming--oof, we have an even harder time. Here to help us embrace change and defuse its unsettling power is Change Happens, a full-color illustrated gift book to consult, (...) to share, to give, and to keep on a night table. Curated by Kathryn and Ross Petras, the ultimate connoisseurs of quotes whose books and calendars have over 4.5 million copies in print, these words of wisdom inspire us to be open to change and remind us that nothing positive in life ever happens without it. Arranged alphabetically by subject--including Adapting, Curveballs, Faith, Letting Go, Regrets, Second Chances, Vulnerability--it's a book to turn to in moments of need, when offering advice to a friend or loved one, when urging a child to find the courage to take a step, when marking an important occasion. (shrink)

The author develops her account of Claudia Card's ethical work as nonideal ethical theory (NET). She clarifies Card's role in ethical theorizing of the recent past, partly in order to brief the unfamiliar reader on Card's ethics and nonideal theory, and partly to enter Card's contributions into the story of nonideal theory's emergence in philosophy. She then recommends, to other NET philosophers, the prioritization of (i) Card's rejection of the "administrative point of view", and (ii) Card's focus on "intolerable harms" (...) as critical to excellent ethical theorizing. She ends with the observation that NET may helpfully point toward reasons to take a pessimistic stance toward moral progress as elaborated in some classic texts in political philosophy; her appreciation of Card's insights yields a variety of pessimism that Card herself did not share. (shrink)

Marketers use autobiographical advertising as a means to create nostalgia for their products. This research explores whether such referencing can cause people to believe that they had experiences as children that are mentioned in the ads. In Experiment 1, participants viewed an ad for Disney that suggested that they shook hands with Mickey Mouse as a child. Relative to controls, the ad increased their confidence that they personally had shaken hands with Mickey as a child at a Disney resort. The (...) increased confidence could be due to a revival of a true memory or the creation of a new, false one. In Experiment 2, participants viewed an ad for Disney that suggested that they shook hands with an impossible character (e.g., Bugs Bunny). Again, relative to controls, the ad increased confidence that they personally had shaken hands with the impossible character as a child at a Disney resort. The increased confidence is consistent with the notion that autobiographical referencing can lead to the creation of false or distorted memory. ᭧ 2002 John Wiley & Sons, Inc. (shrink)

There is conflicting experimental evidence about whether the “stakes” or importance of being wrong affect judgments about whether a subject knows a proposition. To date, judgments about stakes effects on knowledge have been investigated using binary paradigms: responses to “low” stakes cases are compared with responses to “high stakes” cases. However, stakes or importance are not binary properties—they are scalar: whether a situation is “high” or “low” stakes is a matter of degree. So far, no experimental work has investigated the (...) scalar nature of stakes effects on knowledge: do stakes effects increase as the stakes get higher? Do stakes effects only appear once a certain threshold of stakes has been crossed? Does the effect plateau at a certain point? To address these questions, we conducted experiments that probe for the scalarity of stakes effects using several experimental approaches. We found evidence of scalar stakes effects using an “evidence seeking” experimental design, but no evidence of scalar effects using a traditional “evidence-fixed” experimental design. In addition, using the evidence-seeking design, we uncovered a large, but previously unnoticed framing effect on whether participants are skeptical about whether someone can know something, no matter how much evidence they have. The rate of skeptical responses and the rate at which participants were willing to attribute “lazy knowledge”—that someone can know something without having to check—were themselves subject to a stakes effect: participants were more skeptical when the stakes were higher, and more prone to attribute lazy knowledge when the stakes were lower. We argue that the novel skeptical stakes effect provides resources to respond to criticisms of the evidence-seeking approach that argue that it does not target knowledge. (shrink)

The nature of moral action versus moral judgment has been extensively debated in numerous disciplines. We introduce Virtual Reality (VR) moral paradigms examining the action individuals take in a high emotionally arousing, direct action-focused, moral scenario. In two studies involving qualitatively different populations, we found a greater endorsement of utilitarian responses–killing one in order to save many others–when action was required in moral virtual dilemmas compared to their judgment counterparts. Heart rate in virtual moral dilemmas was significantly increased when compared (...) to both judgment counterparts and control virtual tasks. Our research suggests that moral action may be viewed as an independent construct to moral judgment, with VR methods delivering new prospects for investigating and assessing moral behaviour. (shrink)