Showing papers by "Northumbria University published in 2010"

Meta-analysis of digit ratio 2D:4D shows greater sex difference in the right hand

Abstract: Objectives: Our aims are, first, to describe the sex difference in the length ratio of the second and fourth digits (2D:4D), which likely reflects prenatal testosterone levels in humans. Second, to infer the loss of reliability observed in 2D:4D based on self-measured finger lengths. Methods: We used random-effects meta-analysis of 2D:4D based on expert-measured finger lengths (116 samples with 13,260 females and 11,789 males). Results: We find a moderate sex difference (with lower 2D:4D for males), which shows substantial heterogeneity (which is unrelated to age). The sex difference is moderated by the type of finger length measurement and by hand. Measurement involving the distortion of soft tissue leads to a significantly larger sex difference than finger length measurement avoiding this. The sex difference in 2D:4D is larger in the right hand than in the left. The reliability of self-measured 2D:4D in the BBC internet study, by far the largest study on 2D:4D, is estimated to be 46% of that of expert-measured 2D:4D. Conclusions: Right-hand 2D:4D might be a better indicator of prenatal androgenisation than left-hand 2D:4D. The view that 2D:4D has allometric properties (Kratochvil L, Flegr J. 2009. Differences in 2nd to 4th digit length ratio in humans reflect shifts along the common allometric line. Biol Lett 5:643–646.) is not supported. Bone lengths contribute to the sex difference in 2D:4D. In addition, there might be a sex difference in fingers' soft tissue, which should be investigated. Because of measurement unreliability, correlations between 2D:4D and variables of interest are about one-third smaller in the BBC internet study than in studies in which 2D:4D is based on expert-measured finger lengths.

Working memory deficits can be overcome : impacts of training and medication on working memory in children with ADHD.

Abstract: This study evaluated the impact of two interventions—a training program and stimulant medication—on working memory (WM) function in children with attention deficit hyperactivity disorder (ADHD). Twenty-five children aged between 8 and 11 years participated in training that taxed WM skills to the limit for a minimum of 20 days, and completed other assessments of WM and IQ before and after training, and with and without prescribed drug treatment. While medication significantly improved visuo-spatial memory performance, training led to substantial gains in all components of WM across untrained tasks. Training gains associated with the central executive persisted over a 6-month period. IQ scores were unaffected by either intervention. These findings indicate that the WM impairments in children with ADHD can be differentially ameliorated by training and by stimulant medication.

Influence of tart cherry juice on indices of recovery following marathon running.

Abstract: This investigation determined the efficacy of a tart cherry juice in aiding recovery and reducing muscle damage, inflammation and oxidative stress. Twenty recreational Marathon runners assigned to either consumed cherry juice or placebo for 5 days before, the day of and for 48 h following a Marathon run. Markers of muscle damage (creatine kinase, lactate dehydrogenase, muscle soreness and isometric strength), inflammation [interleukin-6 (IL-6), C-reactive protein (CRP) and uric acid], total antioxidant status (TAS) and oxidative stress [thiobarbituric acid reactive species (TBARS) and protein carbonyls] were examined before and following the race. Isometric strength recovered significantly faster (P=0.024) in the cherry juice group. No other damage indices were significantly different. Inflammation was reduced in the cherry juice group (IL-6, P<0.001; CRP, P<0.01; uric acid, P<0.05). TAS was ∼10% greater in the cherry juice than the placebo group for all post-supplementation measures (P<0.05). Protein carbonyls was not different; however, TBARS was lower in the cherry juice than the placebo at 48 h (P<0.05). The cherry juice appears to provide a viable means to aid recovery following strenuous exercise by increasing total antioxidative capacity, reducing inflammation, lipid peroxidation and so aiding in the recovery of muscle function.

Earth system sensitivity inferred from Pliocene modelling and data

Abstract: Quantifying the equilibrium response of global temperatures to an increase in atmospheric carbon dioxide concentrations is one of the cornerstones of climate research Components of the Earth’s climate system that vary over long timescales, such as ice sheets and vegetation, could have an important effect on this temperature sensitivity, but have often been neglected Here we use a coupled atmosphere–ocean general circulation model to simulate the climate of the mid-Pliocene warm period (about three million years ago), and analyse the forcings and feedbacks that contributed to the relatively warm temperatures Furthermore, we compare our simulation with proxy records of mid-Pliocene sea surface temperature Taking these lines of evidence together, we estimate that the response of the Earth system to elevated atmospheric carbon dioxide concentrations is 30–50% greater than the response based on those fast-adjusting components of the climate system that are used traditionally to estimate climate sensitivity We conclude that targets for the long-term stabilization of atmospheric greenhouse-gas concentrations aimed at preventing a dangerous human interference with the climate system should take into account this higher sensitivity of the Earth system

Content analysis in environmental reporting research: enrichment and rehearsal of the method in a British-German context

Abstract: A number of previous studies have utilised content analysis as a method for analysing environmental reporting. In this study, a method, devised by the authors and capable of both mechanistic and interpretative narrative interrogation is presented. By adopting a matrix approach to environmental narratives, multiple information characteristics can be taken into account when analysing disclosures. The method developed in this paper (termed CONI or consolidated narrative interrogation) provides a measure of information diversity, information content and volume. The content analysis instrument facilitates data capture inaccessible to less penetrating research instruments. The joint objectives of this paper are to report on the development of CONI and to demonstrate its capacity to extend the capability of content analysis methods. In particular, the paper demonstrates the utility of CONI through the application to a matched sample of 14 pairs of companies from the United Kingdom and Germany over a period of five years. Findings include the observation that information diversity has broadened over time. The study also notes the dominance of narrative over numerical content with little disclosure containing comparative or contextualised numerical information. There were few significant differences in environmental reporting between the two countries. The paper concludes with suggested opportunities for future research using the CONI research instrument.

External Urban Relational Process: Introducing Central Flow Theory to Complement Central Place Theory

Abstract: Central place hierarchies have been the traditional basis for understanding external urban relations. However, in contemporary studies of these relations, a new emphasis on urban networks has emerged. Rather than either abandoning or extending central place thinking, it is here treated as representing one of two generic processes of external urban relations. Town-ness is the making of ‘local’ urban hinterland relations and ‘city-ness’ is the making of ‘non local’ interurban relations. Central place theory describes the former through an interlocking hierarchical model; this paper proposes a central flow theory to describe the latter through an interlocking network model. The key difference is the level of complexity in the two processes.

Consumption of cocoa flavanols results in acute improvements in mood and cognitive performance during sustained mental effort

Abstract: Cocoa flavanols (CF) positively influence physiological processes in ways that suggest their consumption may improve aspects of cognitive function. This study investigated the acute cognitive and subjective effects of CF consumption during sustained mental demand. In this randomized, controlled, double-blinded, balanced, three period crossover trial 30 healthy adults consumed drinks containing 520 mg, 994 mg CF and a matched control, with a three-day washout between drinks. Assessments included the state anxiety inventory and repeated 10-min cycles of a Cognitive Demand Battery comprising of two serial subtraction tasks (Serial Threes and Serial Sevens), a Rapid Visual Information Processing (RVIP) task and a 'mental fatigue' scale, over the course of 1 h. Consumption of both 520 mg and 994 mg CF significantly improved Serial Threes performance. The 994 mg CF beverage significantly speeded RVIP responses but also resulted in more errors during Serial Sevens. Increases in self-reported 'mental fatigue' were significantly attenuated by the consumption of the 520 mg CF beverage only. This is the first report of acute cognitive improvements following CF consumption in healthy adults. While the mechanisms underlying the effects are unknown they may be related to known effects of CF on endothelial function and blood flow.

Is the feedback in higher education assessment worth the paper it is written on? Teachers' reflections on their practices

Abstract: Perceptions of the role and efficacy of written feedback in teaching and learning among teaching staff in British higher education institutions have not been extensively researched. In the present study 48 lecturers in one university and from a cross-section of disciplinary backgrounds were interviewed with respect to their lived experiences with writing assessment feedback. Like most universities, theirs has a stated commitment to academic excellence by, among other things, ensuring timely and useful feedback on assignments. The findings suggest, however, that institutional policies and departmental practices related to formative assessment in this respect are not having the intended effect. Teachers have varied perceptions and beliefs about the purposes of written feedback, and are uncertain about what it achieves and what use students make of it. Far from enhancing written feedback, innovative practices and procedures have created new problems for teachers. There is a clear need for continuing research...

Understanding the International Student Experience

Abstract: Presents a contemporary approach to the experience of international students in Higher Education. Using empirical and qualitative data, the book explores their social and cultural context and its impact on their learning experience.

Cyclone disaster vulnerability and response experiences in coastal Bangladesh

Abstract: For generations, cyclones and tidal surges have frequently devastated lives and property in coastal and island Bangladesh. This study explores vulnerability to cyclone hazards using first-hand coping recollections from prior to, during and after these events. Qualitative field data suggest that, beyond extreme cyclone forces, localised vulnerability is defined in terms of response processes, infrastructure, socially uneven exposure, settlement development patterns, and livelihoods. Prior to cyclones, religious activities increase and people try to save food and valuable possessions. Those in dispersed settlements who fail to reach cyclone shelters take refuge in thatched-roof houses and big-branch trees. However, women and children are affected more despite the modification of traditional hierarchies during cyclone periods. Instinctive survival strategies and intra-community cooperation improve coping post cyclone. This study recommends that disaster reduction programmes encourage cyclone mitigation while being aware of localised realities, endogenous risk analyses, and coping and adaptation of affected communities (as active survivors rather than helpless victims).

Investigating the role of social capital in innovation: sparse versus dense network

Abstract: Purpose – The purpose of this paper is to analyze the literature on social capital and its contribution to innovation performance.Design/methodology/approach – Through an intensive review of the literature, the paper first analyzes the origin of the concept of social capital. It then explains the contribution of social capital within the organization and management studies. Further, social capital is considered the facilitator of knowledge search and knowledge sharing activities, which are considered of capital importance to innovation outcomes. Further, the paper clarifies the implications of social capital to two types of innovation: radical vs incremental innovation. Finally, the paper analyzes the structural dimension of social capital by focusing on the contribution of two different configurations and their effect on innovation: sparse vs cohesive networks.Findings – The paper contributes to the literature by uncovering the positive, but also the negative, drawbacks of social capital. Moreover, the p...

Pliocene Model Intercomparison Project (PlioMIP): experimental design and boundary conditions (Experiment 1)

Abstract: . In 2008 the temporal focus of the Palaeoclimate Modelling Intercomparison Project was expanded to include a model intercomparison for the mid-Pliocene warm period (3.29–2.97 million years ago). This project is referred to as PlioMIP (Pliocene Model Intercomparison Project). Two experiments have been agreed upon and comprise phase 1 of PlioMIP. The first (Experiment 1) will be performed with atmosphere-only climate models. The second (Experiment 2) will utilise fully coupled ocean-atmosphere climate models. The aim of this paper is to provide a detailed model intercomparison project description which documents the experimental design in a more detailed way than has previously been done in the literature. Specifically, this paper describes the experimental design and boundary conditions that will be utilised for Experiment 1 of PlioMIP.

Critical Discourse Analysis and Cognitive Science: New Perspectives on Immigration Discourse

Abstract: Preface Acknowledgements Figures and Tables PART I: THE SCOPE OF CDA Introduction Critical Discourse Analysis PART II: EVOLUTIONARY PSYCHOLOGY Communication, Cooperation and Manipulation Referential Strategies Predication and Proximisation Strategies Legitimising Strategies PART III: COGNITIVE LINGUISTICS Conceptualisation Metaphor Force-dynamics and Epistemic Modality Concluding References Index

Early Occipital Sensitivity to Syntactic Category Is Based on Form Typicality

Abstract: Syntactic factors can rapidly affect behavioral and neural responses during language processing; however, the mechanisms that allow this rapid extraction of syntactically relevant information remain poorly understood. We addressed this issue using magnetoencephalography and found that an unexpected word category (e.g., “The recently princess . . . ”) elicits enhanced activity in visual cortex as early as 120 ms after exposure, and that this activity occurs as a function of the compatibility of a word’s form with the form properties associated with a predicted word category. Because no sensitivity to linguistic factors has been previously reported for words in isolation at this stage of visual analysis, we propose that predictions about upcoming syntactic categories are translated into form-based estimates, which are made available to sensory cortices. This finding may be a key component to elucidating the mechanisms that allow the extreme rapidity and efficiency of language comprehension.

Effects of high-dose B vitamin complex with vitamin C and minerals on subjective mood and performance in healthy males.

Abstract: Rationale A significant proportion of the general population report supplementing their diet with one or more vitamins or minerals, with common reasons for doing so being to combat stress and fatigue and to improve mental functioning. Few studies have assessed the relationship between supplementation with vitamins/minerals and psychological functioning in healthy cohorts of non-elderly adults.

Multi-touch authentication on tabletops

Abstract: The introduction of tabletop interfaces has given rise to the need for the development of secure and usable authentication techniques that are appropriate for the co-located collaborative settings for which they have been designed. Most commonly, user authentication is based on something you know, but this is a particular problem for tabletop interfaces, as they are particularly vulnerable to shoulder surfing given their remit to foster co-located collaboration. In other words, tabletop users would typically authenticate in full view of a number of observers. In this paper, we introduce and evaluate a number of novel tabletop authentication schemes that exploit the features of multi-touch interaction in order to inhibit shoulder surfing. In our pilot work with users, and in our formal user-evaluation, one authentication scheme - Pressure-Grid - stood out, significantly enhancing shoulder surfing resistance when participants used it to enter both PINs and graphical passwords.

Dissociable Neural Responses to Hands and Non-Hand Body Parts in Human Left Extrastriate Visual Cortex

Abstract: Accumulating evidence points to a map of visual regions encoding specific categories of objects. For example, a region in the human extrastriate visual cortex, the extrastriate body area (EBA), has been implicated in the visual processing of bodies and body parts. Although in the monkey, neurons selective for hands have been reported, in humans it is unclear whether areas selective for individual body parts such as the hand exist. Here, we conducted two functional MRI experiments to test for hand-preferring responses in the human extrastriate visual cortex. We found evidence for a hand-preferring region in left lateral occipitotemporal cortex in all 14 participants. This region, located in the lateral occipital sulcus, partially overlapped with left EBA, but could be functionally and anatomically dissociated from it. In experiment 2, we further investigated the functional profile of hand- and body-preferring regions by measuring responses to hands, fingers, feet, assorted body parts (arms, legs, torsos), and non-biological handlike stimuli such as robotic hands. The hand-preferring region responded most strongly to hands, followed by robotic hands, fingers, and feet, whereas its response to assorted body parts did not significantly differ from baseline. By contrast, EBA responded most strongly to body parts, followed by hands and feet, and did not significantly respond to robotic hands or fingers. Together, these results provide evidence for a representation of the hand in extrastriate visual cortex that is distinct from the representation of other body parts.

Initial preference for drinking goal in the treatment of alcohol problems: II. Treatment outcomes

Abstract: Aims: To compare treatment outcomes between clients preferring abstinence and those preferring non-abstinence at the screening stage of a randomized controlled trial of treatment for alcohol problems (the United Kingdom Alcohol Treatment Trial) and to interpret any differential outcome in light of baseline differences between goal preference groups outlined in an accompanying paper. Methods: Outcomes at 3 and 12 months' follow-up were recorded both in categorical terms (abstinence/non-problem drinking/much improved/somewhat improved/same/worse) and on continuous measures (percent days abstinent, drinks per drinking day/dependence score). Results: Clients initially stating a preference for abstinence showed a better outcome than those stating a preference for non- abstinence. This superior outcome was clearer at 3 months' follow-up but still evident at 12 months' follow-up. The better outcome consisted almost entirely in a greater frequency of abstinent days, with only a modest benefit in drinking intensity for goal abstainers that disappeared when baseline covariates of goal preference were controlled for. Type of successful outcome (abstinence/non-problem drinking) was related to initial goal preference, with clients preferring abstinence more likely to obtain an abstinent outcome and those preferring non-abstinence a non-problem drinking outcome. Conclusion: The client's personal drinking goals should be discussed in assessment at treatment entry and as a basis for negotiation. Clinicians should be prepared to identify and support goal change as an unexceptional part of the treatment process that need not jeopardize good outcome.

Approaching disaster management through social learning

Abstract: Purpose – Coping with and adjusting to disruptive challenges has always been a characteristic of human development. Formalisation of this has led to the emergence of a number approaches addressing disruptive challenges. Often formalised practice has a narrow focus. Increasingly complex challenges require a refocus of formalised approaches. Drawing from these approaches, the purpose of this paper is to posit that a greater focus on preparedness through pre‐disaster planning is needed for a more holistic approach to disaster management.Design/methodology/approach – The paper reviews the evolution of disaster management thinking and practice and proposes that changes are needed to the dominant disaster management model. These changes are drawn from a number of alternative perspectives. Based on the uncertainties surrounding complex or “wicked” problems, for example, climate change and variability, this paper develops a more holistic approach.Findings – Responding to “wicked problems” requires a greater focus...

‘Thinking Outside the Box’? Trade Union Organizing Strategies and Polish Migrant Workers in the United Kingdom

Abstract: This article focuses on the responses of British trade unions to the arrival of Polish workers since the 2004 enlargement of the European Union. It is argued that existing definitions and explanations of UK trade union engagement with migrant workers do not capture the strategies that have been used to engage with these migrant workers. We suggest that there have been two sets of responses. First, recruitment and organization activity has centred on inclusion and has been undertaken on new terrains using innovative strategies. Second, we point to the importance of new linkages locally, regionally, nationally and internationally in organizing these new labour market entrants.