Can a before-school physical activity program decrease bullying victimization in disadvantaged children? The Active-Start Study

Background/ObjectiveTo test the effectiveness of an 8-week before-school physical activity program to reduce bullying victimization among a group of socially disadvantaged children in the Active-Start study.MethodA non-blinded randomized controlled trial was conducted in three public schools classified as highly vulnerable and located in a deprived area of Santiago (Chile). A total of 5 classes participated, totaling 170 fourth grade children. The intervention was delivered before starting the first school-class (8:00–8:30 a.m.). The program lasted for 8 weeks. Primary outcome measurement on bullying victimization was assessed by the CUBE questionnaire at baseline and post-intervention.ResultsThere was a statistically significant reduction in the probability of suffering physical bullying (OR= 0.18, 95% CI, 0.04-0.82; p= .027) and verbal bullying (OR=0.13, 95% CI, 0.02-0.97; p= .046) after the 8-week program.ConclusionsParticipation in an 8-week before-school physical activity intervention implemented in schools located in a disadvantaged district in Santiago (Chile) resulted in lower levels of bullying victimization among study participants. The Active-Start program may be a feasible and potentially scalable intervention option to improve the climate and pro-sociality environment at schools.     

Contributions of Loss Events to Loss Distress and Trauma Symptoms in Recently Resettled Refugee Women at Risk

This research examined contributions of loss events to loss distress and trauma symptoms (accounting for trauma events) for refugee women at risk. Participants (N?=?104) responded to the Multidimensional Loss Scale (loss events and distress) and Harvard Trauma Questionnaire (trauma events and symptoms). Loss events contributed uniquely to loss distress (explaining additional 50.8% variance), and made a unique contribution to trauma symptoms (explaining additional 5.2% variance) approximately equal to trauma events. Appropriate response to psychic distress in refugee women at risk requires assessment of both loss and trauma and consideration of cultural differences in ways loss is expressed and meaning ascribed to symptoms.     

Neural and cognitive plasticity: from maps to minds

Some species and individuals are able to learn cognitive skills more flexibly than others. Learning experiences and cortical function are known to contribute to such differences, but the specific factors that determine an organism's intellectual capacities remain unclear. Here, an integrative framework is presented suggesting that variability in cognitive plasticity reflects neural constraints on the precision and extent of an organism's stimulus representations. Specifically, it is hypothesized that cognitive plasticity depends on the number and diversity of cortical modules that an organism has available as well as the brain's capacity to flexibly reconfigure and customize networks of these modules. The author relates this framework to past proposals on the neural mechanisms of intelligence, including (a) the relationship between brain size and intellectual capacity; (b) the role of prefrontal cortex in cognitive control and the maintenance of stimulus representations; and (c) the impact of neural plasticity and efficiency on the acquisition and performance of cognitive skills. The proposed framework provides a unified account of variability in cognitive plasticity as a function of species, age, and individual, and it makes specific predictions about how manipulations of cortical structure and function will impact intellectual capacity.     

Prevalence of Suicide Risk Factors and Suicide‐Related Outcomes in the National Mental Health Study,Colombia

A community survey in 4,426 adults was undertaken as part of the World Mental Health Survey Initiative reporting the prevalence and risk factors for suicide‐related outcomes in Colombia. Lifetime prevalence estimates of suicide ideation, plans, attempts, and risk factors for suicide‐related outcomes were assessed. Retrospective reports of disorders age‐of‐onset were used to study associations between primary mental disorders and first onset of suicide‐related outcomes. Risks of plans and attempts were highest with ideation early age‐of‐onset and within the first year. The highest risk for ideation and attempt among ideators occurred in the 18–29 age group. After first employment (defined as the first paid job accepted by the respondent) and presence of mental disorders constituted risk factors. Impulse‐control disorders were strongest diagnostic predictors.     

Enabling Action: Reflections upon Inclusive Participatory Research on Health with Women with Disabilities in the Philippines

People with disabilities experience health disparities arising from social, environmental, and system-level factors. Evidence from a range of settings suggests women with disabilities have reduced access to health information and experience barriers to screening, prevention, and care services. This results in greater unmet health needs, particularly in relation to sexual and reproductive health. Women with disabilities are also more likely to experience physical and sexual violence than women without disabilities, further undermining their health. Community-based participatory research (CBPR) can generate knowledge and underpin action to address such health disparities and promote health equity. However, the potential and challenges of disability inclusion in CBPR, particularly in contexts of poverty and structural inequality such as those found in low- and middle-income countries, are not well documented. In this paper, we reflect on our experience of implementing and evaluating W-DARE, a three-year program of disability-inclusive CBPR aiming to increase access to sexual and reproductive health and violence-response services for women with disabilities in the Philippines. We discuss strategies for increasing disability inclusion in research and use a framework of reflexive solidarity to consider the uneven distribution of the benefits, costs, and responsibilities for action arising from the W-DARE program.     

Cleaning versus replacement in power plant air preheaters: a comparison between deterministic and stochastic goal programming models

Power plants lose efficiency when the air preheater elements are not replaced or cleaned as they deteriorate. Replacing is more expensive than cleaning but more secure to preserve power and lifetime. How many baskets should be then replaced and how many cleaned to achieve ‘satisficing’ goals of cost, power and lifetime? We design deterministic/stochastic goal programming approaches to this problem and develop a decision case for usual preheaters. Some discrepancies in results between both approaches appear, the deterministic model advising to replace less baskets than the stochastic, which is plausible due to the risk variable. Copyright © 2005 John Wiley & Sons, Ltd.