151 research outputs found
The effects of changes in the order of verbal labels and numerical values on children's scores on attitude and rating scales
Research with adults has shown that variations in verbal labels and numerical scale values on rating scales can affect the responses given. However, few studies have been conducted with children. The study aimed to examine potential differences in childrenâs responses to Likert-type rating scales according to their anchor points and scale direction, and to see whether or not such differences were stable over time. 130 British children, aged 9 to 11, completed six sets of Likert-type rating scales, presented in four different ways varying the position of positive labels and numerical values. The results showed, both initially and 8-12 weeks later, that presenting a positive label or a high score on the left of a scale led to significantly higher mean scores than did the other variations. These findings indicate that different arrangements of rating scales can produce different results which has clear implications for the administration of scales with children
What Is a Representative Brain? Neuroscience Meets Population Science
The last decades of neuroscience research have produced immense progress in the methods available to understand brain structure and function. Social, cognitive, clinical, affective, economic, communication, and developmental neurosciences have begun to map the relationships between neuro-psychological processes and behavioral outcomes, yielding a new understanding of human behavior and promising interventions. However, a limitation of this fast moving research is that most findings are based on small samples of convenience. Furthermore, our understanding of individual differences may be distorted by unrepresentative samples, undermining findings regarding brainâbehavior mechanisms. These limitations are issues that social demographers, epidemiologists, and other population scientists have tackled, with solutions that can be applied to neuroscience. By contrast, nearly all social science disciplines, including social demography, sociology, political science, economics, communication science, and psychology, make assumptions about processes that involve the brain, but have incorporated neural measures to differing, and often limited, degrees; many still treat the brain as a black box. In this article, we describe and promote a perspectiveâpopulation neuroscienceâthat leverages interdisciplinary expertise to (i) emphasize the importance of sampling to more clearly define the relevant populations and sampling strategies needed when using neuroscience methods to address such questions; and (ii) deepen understanding of mechanisms within population science by providing insight regarding underlying neural mechanisms. Doing so will increase our confidence in the generalizability of the findings. We provide examples to illustrate the population neuroscience approach for specific types of research questions and discuss the potential for theoretical and applied advances from this approach across areas
Overweight, Obesity and Underweight Is Associated with Adverse Psychosocial and Physical Health Outcomes among 7-Year-Old Children: The 'Be Active, Eat Right' Study
Background:Limited studies have reported on associations between overweight, and physical and psychosocial health outcomes among younger children. This study evaluates associations between overweight, obesity and underweight in 5-year-old children, and parent-reported health outcomes at age 7 years.Methods:Data were used from the 'Be active, eat right' study. Height and weight were measured at 5 and 7 years. Parents reported on child physical and psychosocial health outcomes (e.g. respiratory symptoms, general health, happiness, insecurity and adverse treatment). Regression models, adjusted for potential confounders, were fitted to predict health outcomes at age 7 years.Results:The baseline study sample consisted of 2,372 children mean age 5.8 (SD 0.4) years; 6.2% overweight, 1.6% obese and 15.0% underweight. Based on parent-report, overweight, obese and underweight children had an odds ratio (OR) of 5.70 (95% CI: 4.10 to 7.92), 35.34 (95% CI: 19.16; 65.17) and 1.39 (95% CI: 1.05 to 1.84), respectively, for being treated adversely compared to normal weight children. Compared to children with a low stable body mass index (BMI), parents of children with a high stable BMI reported their child to have an OR of 3.87 (95% CI: 1.75 to 8.54) for visiting the general practitioner once or more, an OR of 15.94 (95% CI: 10.75 to 23.64) for being treated adversely, and an OR of 16.35 (95% CI: 11.08 to 24.36) for feeling insecure.Conclusion:This study shows that overweight, obesity and underweight at 5 years of age is associated with more parent-reported adverse treatment of the child. Qualitative research examining underlying mechanisms is recommended. Healthcare providers should be aware of the possible adverse effects of childhood overweight and also relative underweight, and provide parents and children with appropriate counseling
Atribuciones causales y nivel educativo familiar en la comprensión del desempeño escolar en alumnos portugueses
Este artigo analisa o contributo especĂfico do nĂvel educativo familiar e das atribuiçÔes causais para o bom e fraco rendimento escolar dos alunos na explicação do seu desempenho nas disciplinas de LĂngua Portuguesa e de MatemĂĄtica numa amostra de 2.082 alunos do ensino pĂșblico de 11 escolas de Portugal, incluindo as RegiĂ”es AutĂłnomas dos Açores e da Madeira. As atribuiçÔes causais foram avaliadas por meio do QuestionĂĄrio das AtribuiçÔes Causais para os
Resultados Escolares (QARE). O nĂvel educativo familiar foi estimado levando em conta o nĂvel escolar do progenitor com maior habilitação escolar. As classificaçÔes obtidas pelos alunos nas disciplinas de lĂngua portuguesa e matemĂĄtica foram tambĂ©m examinadas. Os resultados apontam para correlaçÔes estatisticamente significativas, destacando as atribuiçÔes na capacidade para a explicação do rendimento escolar, situação que contrasta com a atribuição dos nĂveis de rendimento a variĂĄveis externas ao aluno. A anĂĄlise de regressĂŁo permite associar 34,5% da variĂąncia no rendimento
conjunto em LĂngua Portuguesa e em MatemĂĄtica no ensino bĂĄsico, assim como 21,3% no ensino secundĂĄrio, Ă s
dimensĂ”es atribucionais e ao nĂvel educativo familiar. ImplicaçÔes educacionais sĂŁo derivadas a partir dos achados.This paper analyzes the contribution of both family educational level and causal attributions in explaining studentsÂŽ
academic performance in Mathematics and Portuguese Language in a sample of 2.082 public school students from mainland Portugal and the Azores and Madeira regions. Causal attributions were assessed by the Causal Attributions Questionnaire for School Results (QARE). The family educational level was estimated taking into account the educational
level of the parent with higher academic degree. The academic grades obtained by students in mathematics and portuguese language were also considered. The results show statistically significant correlations between variables. Internal causal attributions such as capacity and study methods were predominant to explain school performance in the sample and stood out in contrast to external attributions explanations. Regression analyses revealed that 34.5% of the
variance in the combined achievement on Portuguese Language and Mathematics in primary education and 21.3% in secondary education could be explained by both the attributional dimensions and family education level. Some educational implications are present taking these data.Este artĂculo analiza la contribuciĂłn especĂfica del nivel educativo familiar y de las atribuciones causales para el buen y el
flaco rendimiento escolar de los alumnos en la explicación de su desempeño en las disciplinas de Lengua Portuguesa y
MatemĂĄticas en una muestra de 2.082 alumnos de enseñanza pĂșblica de 11 escuelas de Portugal, incluyendo las Regiones
AutĂłnomas de Açores y Madeira. Las atribuciones causales fueron evaluadas por medio del âQuestionĂĄrio das AtribuiçÔes Causais para os Resultados Escolaresâ (QARE). El nivel educativo familiar fue estimado teniendo en cuenta el nivel escolar del progenitor con mayor habilitaciĂłn escolar. Las clasificaciones obtenidas por los alumnos en las disciplinas de lengua portuguesa y matemĂĄticas fueron tambiĂ©n examinadas. Los resultados señalaron correlaciones
estadĂsticamente significativas, destacando las atribuciones en la capacidad para la explicaciĂłn del rendimiento escolar,
situación que contrasta con la atribución de los niveles de rendimiento a variables externas al alumno. El anålisis de regresión permite asociar 34.5% de la variancia en el rendimiento conjunto de la Lengua Portuguesa y las Matemåticas en la enseñanza båsica, asà como 21.3% en la enseñanza secundaria, a las dimensiones de atribución y al nivel educativo familiar. Implicaciones educacionales son derivadas a partir de los hallazgos.Editora Universitåria São Francisc
Validation of the 4AT, a new instrument for rapid delirium screening:A study in 234 hospitalised older people
Objective: to evaluate the performance of the 4 âAâs Test (4AT) in screening for delirium in older patients. The 4AT is a new test for rapid screening of delirium in routine clinical practice. Design: prospective study of consecutively admitted elderly patients with independent 4AT and reference standard assessments. Setting: an acute geriatrics ward and a department of rehabilitation. Participants: two hundred and thirty-six patients (aged â„70 years) consecutively admitted over a period of 4 months. Measurements: in each centre, the 4AT was administered by a geriatrician to eligible patients within 24 h of admission. Reference standard delirium diagnosis (DSM-IV-TR criteria) was obtained within 30 min by a different geriatrician who was blind to the 4AT score. The presence of dementia was assessed using the Alzheimer's Questionnaire and the informant section of the Clinical Dementia Rating scale. The main outcome measure was the accuracy of the 4AT in diagnosing delirium. Results: patients were 83.9 ± 6.1 years old, and the majority were women (64%). Delirium was detected in 12.3% (n = 29), dementia in 31.2% (n = 74) and a combination of both in 7.2% (n = 17). The 4AT had a sensitivity of 89.7% and specificity 84.1% for delirium. The areas under the receiver operating characteristic curves for delirium diagnosis were 0.93 in the whole population, 0.92 in patients without dementia and 0.89 in patients with dementia. Conclusions: the 4AT is a sensitive and specific method of screening for delirium in hospitalised older people. Its brevity and simplicity support its use in routine clinical practice
FADS2 Genetic Variance in Combination with Fatty Acid Intake Might Alter Composition of the Fatty Acids in Brain
Multiple lines of evidence suggest that fatty acids (FA) play an important role in cognitive function. However, little is known about the functional genetic pathways involved in cognition. The main goals of this study were to replicate previously reported interaction effects between breast feeding (BF) and FA desaturase (FADS) genetic variation on IQ and to investigate the possible mechanisms by which these variants might moderate BF effect, focusing on brain expression. Using a sample of 534 twins, we observed a trend in the moderation of BF effects on IQ by FADS2 variation. In addition, we made use of publicly available gene expression databases from both humans (193) and mice (93) and showed that FADS2 variants also correlate with FADS1 brain expression (P-value<1.1E-03). Our results provide novel clues for the understanding of the genetic mechanisms regulating FA brain expression and improve the current knowledge of the FADS moderation effect on cognition
Human malarial disease: a consequence of inflammatory cytokine release
Malaria causes an acute systemic human disease that bears many similarities, both clinically and mechanistically, to those caused by bacteria, rickettsia, and viruses. Over the past few decades, a literature has emerged that argues for most of the pathology seen in all of these infectious diseases being explained by activation of the inflammatory system, with the balance between the pro and anti-inflammatory cytokines being tipped towards the onset of systemic inflammation. Although not often expressed in energy terms, there is, when reduced to biochemical essentials, wide agreement that infection with falciparum malaria is often fatal because mitochondria are unable to generate enough ATP to maintain normal cellular function. Most, however, would contend that this largely occurs because sequestered parasitized red cells prevent sufficient oxygen getting to where it is needed. This review considers the evidence that an equally or more important way ATP deficency arises in malaria, as well as these other infectious diseases, is an inability of mitochondria, through the effects of inflammatory cytokines on their function, to utilise available oxygen. This activity of these cytokines, plus their capacity to control the pathways through which oxygen supply to mitochondria are restricted (particularly through directing sequestration and driving anaemia), combine to make falciparum malaria primarily an inflammatory cytokine-driven disease
Early mobilisation in mechanically ventilated patients:A systematic integrative review of definitions and activities
From PubMed via Jisc Publications RouterHistory: received 2018-10-23, accepted 2018-12-11Publication status: epublishMechanically ventilated patients often develop muscle weakness post-intensive care admission. Current evidence suggests that early mobilisation of these patients can be an effective intervention in improving their outcomes. However, what constitutes early mobilisation in mechanically ventilated patients (EM-MV) remains unclear. We aimed to systematically explore the definitions and activity types of EM-MV in the literature. Whittemore and Knafl's framework guided this review. CINAHL, MEDLINE, EMBASE, PsycINFO, ASSIA, and Cochrane Library were searched to capture studies from 2000 to 2018, combined with hand search of grey literature and reference lists of included studies. The Critical Appraisal Skills Programme tools were used to assess the methodological quality of included studies. Data extraction and quality assessment of studies were performed independently by each reviewer before coming together in sub-groups for discussion and agreement. An inductive and data-driven thematic analysis was undertaken on verbatim extracts of EM-MV definitions and activities in included studies. Seventy-six studies were included from which four major themes were inferred: (1) , (2) , (3) and (4) . The first theme indicates that EM-MV is either not fully defined in studies or when a definition is provided this is not standardised across studies. The remaining themes reflect the diversity of EM-MV activities which depends on patients' characteristics and ICU settings; the negotiated decision-making process between patients and staff; and their interdependent relationship during the implementation. This review highlights the absence of an agreed definition and on what constitutes early mobilisation in mechanically ventilated patients. To advance research and practice an agreed and shared definition is a pre-requisite
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