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At least 1,333 records · Page 74Linked to original sources
PubMed1999

Achievement goals, beliefs about the causes of success and reported emotion in post-16 physical education.

The main aim of this study was to examine whether goal orientations of male and female adolescents involved in an optional post-16 physical education (PE) programme were related in a conceptually consistent manner with their beliefs about the causes of success in PE. We also determined relationships between these achievement goal-belief dimensions and reported enjoyment and boredom within PE classes. Participants (n = 171) in a sixth-form college PE programme completed an inventory assessing their task and ego goal orientations, beliefs about the determinants of success in PE, and emotion in PE activities at college. Separate factor analyses of goal orientations and beliefs for male and female students revealed two goal-belief dimensions. The first dimension showed ego orientation was linked to the view that ability and deceptive tactics lead to success. The second dimension suggested task orientation was associated with the belief that success is the result of hard work and effort. This task goal-belief factor was found to be more strongly correlated with enjoyment in PE among female students than among males. For boys, the task goal-belief factor was correlated significantly and negatively with boredom in PE, but this was not the case for girls. No significant relationships emerged between the ego goal-belief factor and reported emotion in PE among the male and female participants. Facilitating task involvement and beliefs about causes of success that are fundamentally under personal control may, therefore, promote positive affective experiences in sixth-form PE, especially among female students.

Achievement↗
PubMedDate not supplied

The gum exudate from Combretum nigricans gum, the major source of West African 'gum combretum'.

Gum samples from six individual Combretum nigricans trees and two additional reference samples have been characterized. 13C Fourier-transform NMR spectra show that all have the same structure and confirm that the variations observed in their analytical parameters reflect only small fine-structural differences. NMR spectra also reveal that eight West African 'gum combretum' samples from reputable commercial sources originated from Combretum nigricans. This identification is important because gum combretum, which is not permitted as a food additive, has been exploited as an adulterant and misrepresented as gum arabic, for which not even the 1990 Revised Specification is sufficiently rigorous to detect such commercial deceptions. NMR spectroscopy has also shown that the rhamnose and uronic acid contents of gum combretum are located within internal polysaccharide chains. This explains the well-known difference in emulsification functionality between gum arabic, in which all rhamnose and uronic acid groups chain-terminal, and gum combretum which is, in addition, markedly hygroscopic and characterized commercially by its tendency to 'block' in transit and storage.

Africa, Western↗
PubMed1991

Does self-efficacy predict performance in experienced weightlifters?

Previous studies that have examined self-efficacy-performance relationships have used novice performers. It is unclear if these findings would generalize to "experienced" performers. Based on Bandura's self-efficacy theory, this study was designed to investigate (a) the effects of false information feedback on self-efficacy beliefs and subsequent weightlifting performance, and (b) whether self-efficacy or past performance is most related to subsequent weightlifting performance. Experienced weightlifters engaged in six performance sessions, each consisting of a one-repetition-maximum bench press. Male subjects (N = 36) were randomly assigned to one of three treatment groups: accurate performance information, false information that they lifted more than their actual lift, or false information that they lifted less than their actual lift. Before each session, subjects indicated the amount of weight they were 100%, 75%, and 50% confident they could lift. Results replicated existing research findings regarding deception and performance; false positive feedback increased future bench press performance. In addition, results indicated that past weightlifting performance accounted for nearly all of the variance in subsequent performance. This finding is discussed in light of the difficulty in extending the predictions of self-efficacy theory to sport settings where athletes have gained experience by undergoing repeated training trials.

Adult↗
PubMed2001

Students' perceptions of the motivational climate, achievement beliefs, and satisfaction in physical education.

The present study examined the relationship between students' perceptions of the motivational climate and beliefs about the causes of success, preference for challenging tasks, and satisfaction in physical education. Responses of 50 female and 46 male students (M age = 12.08 years; SD = .72) showed that perceptions of a mastery-oriented motivational climate were related to the belief that motivation or effort caused success and satisfaction. In contrast, perceptions of a performance climate were related to the belief that deception caused success and related negatively to the students' preference for challenging tasks. Results of hierarchical regression analyses revealed that perceptions of the motivational climate explained a significant amount of unique variance in the students' responses after controlling for dispositional goal orientations. The results suggest that the teacher can influence the salience of a mastery-oriented climate and, in so doing, optimize a child's motivation in physical education.

Achievement↗
PubMed2006

The role of spiral multidetector dynamic CT in the study of Williams-Campbell syndrome.

Williams-Campbell syndrome is a cystic bronchiectatic disease secondary to deficiency or defect of cartilaginous plates in the wall of the airways. In the literature, two main forms are suggested: congenital and acquired (post-infectious). The most frequent symptoms are represented by recurrent pulmonary infections from childhood. Multislice spiral dynamic CT has a major role in the study of cystic pulmonary disease and in differentiating Williams-Campbell syndrome from the other causes of cystic bronchiectasis, in which even lung function tests can give deceptive results.

Bronchi↗
PubMed1997

Unusual imaging presentations in renal transitional cell carcinoma.

PURPOSE: To report on unusual imaging presentations in renal transitional cell carcinoma (TCC). MATERIAL AND METHODS: Imaging studies of 140 cases of pathologically proven renal TCC were retrospectively studied with the focus on unusual presentations. RESULTS: Unusual imaging manifestations were found in 20 cases (14.3%). These findings were classified into 5 categories: perirenal abscesses or perirenal hematomas in 6 cases; parenchymal masses in 5; undue thickening of the hydronephrotic wall in 4; "tuberculoid" pyelograms in 3; and tumors with massive necrosis in 2. CONCLUSION: Deceptive imaging presentations may occur in renal TCC. Recognition of these presentations may help to prevent delay in diagnosis.

Abscess↗
PubMed1992

China's rural reform: the state and peasantry in constructing a macro-rationality.

As a critique of the popular perspective on China's rural reform centered on microinstitutional problems of collective farming such as work incentive and monitoring, this paper places an alternative emphasis on the distinct organizational characteristics of the peasant family in production, distribution, and welfare. What the Chinese state saw in family-based peasantry was not a typical market-oriented private economy operating mainly in pursuit of short term profits, but a multipurpose, morally governed unit in which the rural population maintains stable work relations, pursues diverse entrepreneurial activities, and satisfies basic subsistence needs; i.e., a organizational unit which could take over most of the social and economic functions of the pre-reform collective. In a sense, China's rural decollectivization has been a process of deceptively transferring the burden of absorbing and supporting the huge rural surplus labor to individual peasant families for whose economic activities the state is not directly responsible.

Agriculture↗
PubMedDate not supplied

Hospital bed mattresses: an overview of technical aspects.

Mattresses designed for clinical applications are deceptively simple pieces of equipment. Their primary function is to comfortably support the patient in an appropriate position. However, there are many other technical factors that affect the quality of the support surfaces. In this paper we discuss the basic functions that mattresses should fulfil, explain some of the underlying mechanics and discuss CE marking and other standards.

Beds↗
PubMed2006

Medical privacy and the public's right to vote: what presidential candidates should disclose.

We argue that while presidential candidates have the right to medical privacy, the public nature and importance of the presidency generates a moral requirement that candidates waive those rights in certain circumstances. Specifically, candidates are required to disclose information about medical conditions that are likely to seriously undermine their ability to fulfill what we call the "core functions" of the office of the presidency. This requirement exists because (1) people have the right to be governed only with their consent, (2) people's consent is meaningful only when they have access to information necessary for making informed voting decisions, (3) such information is necessary for making informed voting decisions, and (4) there are no countervailing reasons sufficiently strong to override this right. We also investigate alternative mechanisms for legally encouraging or requiring disclosure. Protecting the public's right to this information is of particular importance because of the documented history of deception and secrecy regarding the health of presidents and presidential candidates.

Confidentiality↗
PubMedDate not supplied

Safety and ethical consideration of AIDS vaccine.

It has been demonstrated that HIV-1 gp120 resembles several important properties of immunoglobulins allowing it strong influence on the human immune system, especially through induction of the deceptive imprinting and deregulation of the immune network. On the other hand there are many unanswered questions concerning properties and control of the genetically modified viruses and bacteria used as vectors in AIDS vaccines. This situation opens a serious question about the safety of vectored AIDS vaccine and the ethics of their trials in humans.

AIDS Vaccines↗
PubMed1999

Semistarvation-associated eating behaviors among college binge eaters: a preliminary description and assessment scale.

Binge eating is a consequence of semistarvation in victims of war and famine and in volunteers in rare semistarvation experiments. These behaviors include bizarre mixing of ingredients and adulteration of food; eating inappropriate, soiled, or discarded food; secrecy; deception; and defensiveness. Drastic measures to resist overeating persist long after the semistarvation experience, even when food is plentiful. Binge eating, a central feature of bulimia and sometimes of anorexia nervosa, is prevalent in modern society, but the occurrence and frequency of semistarvation-related behaviors have not been well identified or quantified. A Semistarvation-Associated Behaviors Scale was constructed and administered to 40 college students. Among binge eaters, reports of bizarre semistarvation-like behaviors were common and frequent and were associated with dieting.

Adolescent↗
PubMedDate not supplied

The misuse of statistics: concepts, tools, and a research agenda.

This paper presents concerns regarding misuse of statistics in scientific work, especially in biomedical research. The paper discusses what is meant by "misuse." It appears that misuse arises from various sources: degrees of competence in statistical theory and methods, honest error in the application of methods, egregious negligence, and deliberate deception (misconduct.) The incidence of error is partly due to a perceived need to meet artificial statistical criteria for acceptance of research reports for publication by journals. There has been no systematic research into the prevalence of misuse or its breakdown by type. Nonetheless, there are ways to encourage, or even to enforce, good statistical practice. These can be greatly supported by use of available statistical ethics documents. This article suggests lines of further research that could define the problem more explicitly and that might lead to additional corrective measures.

Biomedical Research↗
PubMedDate not supplied

Cisternal maturation and vesicle transport: join the band wagon! (Review).

'No cellular organelle has been the subject of as many, as long-lasting or as diverse polemics as the Golgi apparatus'. This statement was made by Whaley almost 30 years ago in the book The Golgi Apparatus and still holds true today, perhaps more then ever. Why is this? How come something as mundane as a series of intracellular membrane bound structures continues to fascinate and captivate a large section of the cell biology community? One simple reason (putting polemics aside) is that the secretory pathway appears deceptively simple. Once probed, however, it has a persistent habit of developing into an enigma. Is one then not closer than 30 years ago? In a sense yes, in that one has more components and a better understanding of inherent membrane dynamics, but it is still not known how newly synthesized proteins and lipids make their way from the ER to the plasma membrane. Is it by vesicles, cisternal carriers or transient tubular connections? It has also been learned that newly synthesized proteins are segregated away from the resident components throughout the pathway, but not how. Do coat proteins hold the key? It is understood that the cytoskeleton is important, but not really why. It is known that each Golgi stack is a fully functional unit, but not why stacks are connected laterally into a large ribbon (the Golgi apparatus). This review focuses on how proteins make their way through the pathway, a basic question that remains to be answered.

Animals↗
PubMed1986

A review of basic concepts in rice-drying research.

Rice-drying research is international, diffuse, important, and deceptively difficult. This review presents current thinking, background, entrance citations to the literature, and critical analysis for each of the most significant problems in rice-drying research, as well as an overview summary and general recommendations. Discussion is limited to mechanical drying with hot air. The literature examples are divided into four groups by research approach: within-kernel experimental, small-sample experimental, theoretical, and dryer design. While all areas have contributed and are expected to continue to do so, the small-sample experimental approach is cited as appearing to have an untapped potential for bringing about a quantum advance. Problems discussed include: uniformity, fissuring sequence, stress and plastic flow, diffusion mechanisms, temperature and other environmental factors, kernel vs. husk, controlled drying rate, chemical changes, dryer design, timing of harvest, trade-offs, reliability of data, and experimental design or approach.

Desiccation↗
PubMed2003

Attention, theory of mind, and causal attributions in people with persecutory delusions: A preliminary investigation.

INTRODUCTION: Abnormal attributions and deficits in theory of mind (ToM) skills have been implicated in paranoid delusions. Bentall and Kinderman (1998) have proposed that ToM deficits tend to prevent individuals from making situational attributions and therefore increase the probability of external-personal attributions, which in turn lead to paranoid beliefs. They further suggested that more fundamental information-processing deficits, by affecting theory of mind skills, increase the probability of paranoid attributions. METHODS: Relationships between attention, ToM and attributions were assessed in acute and remitted paranoid patients and normal controls. Participants performed the digit span with distraction task, false belief and deception tasks, and a measure of attributional style. RESULTS: Compared to the controls, acute patients were distractible, performed poorly on ToM, and made more attributions that were judged external-personal by independent raters (but not as judged by self-ratings). ToM scores predicted the number of external-personal attributions as expected, but the effect of distraction on ToM was equivocal. CONCLUSIONS: Preliminary support was found for the hypotheses, but further studies are required using a range of executive, attentional, ToM, and attribution measures.

Journal Article↗
PubMed1999

Malingering, hysteria, and the factitious disorders.

The arguments contained within this paper take as their starting point the suggestion that malingering is related along three separate continua to the nosological entities of antisocial behaviour, hysteria and the factitious disorders. The paper is both an attempt to show how these continua can be underwritten and at the same time a discussion of the aetiology of the disorders in question. It will be argued that the aetiological accounts of hysteria and the factitious disorders found in the psychiatric literature fail to make room for an account of the nature of the relationships of these disorders with malingering and thereby fail to fulfil the most important constraint on the acceptability of explanations in this area. In discussing the factitious disorders in the light of this constraint it will be suggested that psychodynamic explanations are vacuous and folk-psychological explanations in principle unavailable. With regard to hysteria it will be suggested that an explanatory account which embraces all the required phenomena and accommodates the close relationship of the disorder to malingering must make use of cognitive-psychologically informed account of self-deception which treats hysterical beliefs as beliefs which are formed as a result of a failure to accurately appraise the subjectively available evidence.

Journal Article↗
PubMed1998

Postoperative necrotizing chest-wall infection. Case report of a rare complication after elective lung surgery.

Necrotizing fasciitis, an uncommon, often fulminant bacterial infection, rarely originates in the chest wall. In a 67-year-old woman, elective lower lobectomy of the right lung was followed by fatal necrotizing fasciitis of the chest wall. Tissue necrosis and overwhelming sepsis were due to synergistic infection by Staphylococcus aureus and Streptococcus microaerophilica. As the early appearance of necrotizing fasciitis is deceptively benign, the diagnosis is extremely difficult and is reliant on a high index of suspicion. Prompt surgical intervention is essential.

Aged↗
PubMed2004

Use of and beliefs about light cigarettes in four countries: findings from the International Tobacco Control Policy Evaluation Survey.

This study examined reported use of, and beliefs about, so-called light cigarettes among adult smokers in four countries: Australia (Aus), Canada (Can), the United Kingdom (U.K.) and the United States (U.S.). The method used was parallel telephone surveys among 9,046 smokers across the four countries. The results indicated that more than half of all smokers in each country except the U.K. reported smoking light cigarette brands. A majority of smokers surveyed in each country except Canada continue to believe that light cigarettes offer some health benefit compared to regular cigarettes (Canada 43%, U.S. 51%, Australia 55%, U.K. 70%). A majority of smokers in all four countries believed that light cigarettes are smoother on the throat and chest than regular cigarettes. Predictors of use of light cigarettes and beliefs about possible benefits were very similar in the four countries. These results demonstrate an ongoing need for public education about why light cigarettes do not reduce harm and do not make quitting easier. The results provide further evidence for the need for regulatory measures in all four countries to prohibit the use of misleading light and mild descriptors including package imagery in product marketing (as prescribed in Article 11 of the Framework Convention on Tobacco Control), abandon the use of standard FTC/ISO tar and nicotine yields as consumer information, and adopt policies to regulate deceptive design features of cigarettes, such as ventilated filters.

Adult↗