Archive for the ‘scholarly publishing’ Category

Building a Better America—One Wealth Quintile at a Time

September 2, 2014 Comments off

Building a Better America—One Wealth Quintile at a Time (PDF)
Source: Perspectives on Psychological Science

Disagreements about the optimal level of wealth inequality underlie policy debates ranging from taxation to welfare. We attempt to insert the desires of ‘‘regular’’ Americans into these debates, by asking a nationally representative online panel to estimate the current distribution of wealth in the United States and to ‘‘build a better America’’ by constructing distributions with their ideal level of inequality. First, respondents dramatically underestimated the current level of wealth inequality. Second, respondents constructed ideal wealth distributions that were far more equitable than even their erroneously low estimates of the actual distribution. Most important from a policy perspective, we observed a surprising level of consensus: All demographic groups—even those not usually associated with wealth redistribution such as Republicans and the wealthy—desired a more equal distribution of wealth than the status quo.

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The downward spiral of mental disorders and educational attainment: a systematic review on early school leaving

September 2, 2014 Comments off

The downward spiral of mental disorders and educational attainment: a systematic review on early school leaving
Source: BMC Psychiatry

Most psychiatric disorders present symptom patterns that cause severe impairment on the emotional, cognitive and social level. Thus, adolescents who suffer from a mental disorder risk finding themselves in a downward spiral caused by the reciprocal association of psychological symptoms and negative school experiences that may culminate in early school leaving. In addition to previous collective work that mainly focused on school refusing behaviour among children and was presented as an expert?s opinion, the following systematic review fills the knowledge gap by providing a structured overview of the bidirectional association between mental health and secondary school dropout based on a sound methodology and with a particular focus on mediating factors.

Four electronic databases were searched from January 1990 until June 2014. Selected references were assessed for study details, main results, mediating factors and methodological limitations. Standardized risk of bias assessment was conducted.

Mood and anxiety disorders seemed to have a less consequential direct effect on early school leaving than substance use and disruptive behaviour disorders. The association between externalizing disorders and educational attainment was even stronger when the disorder occurred early in life. On the other hand, internalizing disorders were reported to develop as a consequence of school dropout. Only few studies had addressed gender differences, with discrepant results. Socio-economic background, academic achievement and family support were identified as significant mediating factors of the association between mental disorders and subsequent educational attainment.

Findings suggested a strong association between mental health and education, in both directions. However, most studies focused on mediating factors that could not be targeted by intervention programs.

Ancestral exposure to stress epigenetically programs preterm birth risk and adverse maternal and newborn outcomes

September 2, 2014 Comments off

Ancestral exposure to stress epigenetically programs preterm birth risk and adverse maternal and newborn outcomes
Source: BMC Medicine

Chronic stress is considered to be one of many causes of human preterm birth (PTB), but no direct evidence has yet been provided. Here we show in rats that stress across generations has downstream effects on endocrine, metabolic and behavioural manifestations of PTB possibly via microRNA (miRNA) regulation.

Pregnant dams of the parental generation were exposed to stress from gestational days 12 to 18. Their pregnant daughters (F1) and grand-daughters (F2) either were stressed or remained as non-stressed controls. Gestational length, maternal gestational weight gain, blood glucose and plasma corticosterone levels, litter size and offspring weight gain from postnatal days 1 to 30 were recorded in each generation, including F3. Maternal behaviours were analysed for the first hour after completed parturition, and offspring sensorimotor development was recorded on postnatal day (P) 7. F0 through F2 maternal brain frontal cortex, uterus and placenta miRNA and gene expression patterns were used to identify stress-induced epigenetic regulatory pathways of maternal behaviour and pregnancy maintenance.

Progressively up to the F2 generation, stress gradually reduced gestational length, maternal weight gain and behavioural activity, and increased blood glucose levels. Reduced offspring growth and delayed behavioural development in the stress cohort was recognizable as early as P7, with the greatest effect in the F3 offspring of transgenerationally stressed mothers. Furthermore, stress altered miRNA expression patterns in the brain and uterus of F2 mothers, including the miR-200 family, which regulates pathways related to brain plasticity and parturition, respectively. Main miR-200 family target genes in the uterus, Stat5b, Zeb1 and Zeb2, were downregulated by multigenerational stress in the F1 generation. Zeb2 was also reduced in the stressed F2 generation, suggesting a causal mechanism for disturbed pregnancy maintenance. Additionally, stress increased placental miR-181a, a marker of human PTB.

The findings indicate that a family history of stress may program central and peripheral pathways regulating gestational length and maternal and newborn health outcomes in the maternal lineage. This new paradigm may model the origin of many human PTB causes.

See: Stress during pregnancy can be passed down through generations (EurekAlert!)

Crowdsourcing for Cognitive Science – The Utility of Smartphones

September 2, 2014 Comments off

Crowdsourcing for Cognitive Science – The Utility of Smartphones
Source: PLoS ONE

By 2015, there will be an estimated two billion smartphone users worldwide. This technology presents exciting opportunities for cognitive science as a medium for rapid, large-scale experimentation and data collection. At present, cost and logistics limit most study populations to small samples, restricting the experimental questions that can be addressed. In this study we investigated whether the mass collection of experimental data using smartphone technology is valid, given the variability of data collection outside of a laboratory setting. We presented four classic experimental paradigms as short games, available as a free app and over the first month 20,800 users submitted data. We found that the large sample size vastly outweighed the noise inherent in collecting data outside a controlled laboratory setting, and show that for all four games canonical results were reproduced. For the first time, we provide experimental validation for the use of smartphones for data collection in cognitive science, which can lead to the collection of richer data sets and a significant cost reduction as well as provide an opportunity for efficient phenotypic screening of large populations.

Technologies as Support Tools for Persons with Autistic Spectrum Disorder: A Systematic Review

September 2, 2014 Comments off

Technologies as Support Tools for Persons with Autistic Spectrum Disorder: A Systematic Review
Source: International Journal of Environmental Research and Public Health

This study analyzes the technologies most widely used to work on areas affected by the Autistic Spectrum Disorder (ASD). Technologies can focus on the strengths and weaknesses of this disorder as they make it possible to create controlled environments, reducing the anxiety produced by real social situations. Extensive research has proven the efficiency of technologies as support tools for therapy and their acceptation by ASD sufferers and the people who are with them on a daily basis. This article is organized by the types of systems developed: virtual reality applications, telehealth systems, social robots and dedicated applications, all of which are classified by the areas they center on: communication, social learning and imitation skills and other ASD-associated conditions. 40.5% of the research conducted is found to be focused on communication as opposed to 37.8% focused on learning and social imitation skills and 21.6% which underlines problems associated with this disorder. Although most of the studies reveal how useful these tools are in therapy, they are generic tools for ASD sufferers in general, which means there is a lack of personalised tools to meet each person’s needs.

Heart Failure Care in Low- and Middle-Income Countries: A Systematic Review and Meta-Analysis

September 1, 2014 Comments off

Heart Failure Care in Low- and Middle-Income Countries: A Systematic Review and Meta-Analysis
Source: PLoS Medicine

Heart failure places a significant burden on patients and health systems in high-income countries. However, information about its burden in low- and middle-income countries (LMICs) is scant. We thus set out to review both published and unpublished information on the presentation, causes, management, and outcomes of heart failure in LMICs.

Methods and Findings
Medline, Embase, Global Health Database, and World Health Organization regional databases were searched for studies from LMICs published between 1 January 1995 and 30 March 2014. Additional unpublished data were requested from investigators and international heart failure experts. We identified 42 studies that provided relevant information on acute hospital care (25 LMICs; 232,550 patients) and 11 studies on the management of chronic heart failure in primary care or outpatient settings (14 LMICs; 5,358 patients). The mean age of patients studied ranged from 42 y in Cameroon and Ghana to 75 y in Argentina, and mean age in studies largely correlated with the human development index of the country in which they were conducted (r = 0.71, p<0.001). Overall, ischaemic heart disease was the main reported cause of heart failure in all regions except Africa and the Americas, where hypertension was predominant. Taking both those managed acutely in hospital and those in non-acute outpatient or community settings together, 57% (95% confidence interval [CI]: 49%–64%) of patients were treated with angiotensin-converting enzyme inhibitors, 34% (95% CI: 28%–41%) with beta-blockers, and 32% (95% CI: 25%–39%) with mineralocorticoid receptor antagonists. Mean inpatient stay was 10 d, ranging from 3 d in India to 23 d in China. Acute heart failure accounted for 2.2% (range: 0.3%–7.7%) of total hospital admissions, and mean in-hospital mortality was 8% (95% CI: 6%–10%). There was substantial variation between studies (p<0.001 across all variables), and most data were from urban tertiary referral centres. Only one population-based study assessing incidence and/or prevalence of heart failure was identified.

The presentation, underlying causes, management, and outcomes of heart failure vary substantially across LMICs. On average, the use of evidence-based medications tends to be suboptimal. Better strategies for heart failure surveillance and management in LMICs are needed.

See: Heart failure is a substantial health burden in low- and middle-income countries (EurekAlert!)

Data for Building a National Suicide Prevention Strategy

August 29, 2014 Comments off

Data for Building a National Suicide Prevention Strategy (PDF)
Source: American Journal of Public Health

Suicide is a leading cause of death in the U.S. As both the rate and number of suicides continue to climb, the country struggles with how to reverse this alarming trend. Using population-based data from publically available sources including the Web-based Injury Statistics Query and Reporting System, National Survey on Drug Use and Health, the authors identified patterns of suicide that can be used to steer a public health – based suicide prevention strategy. That most suicide deaths occur upon the first attempt, for example, suggests that a greater investment in primary prevention is needed. The fact that definable subgroups receiving care through identifiable service systems, such as individuals in specialty substance use treatment, exhibit greater concentrations of suicide risk than the general public suggests that integrating suicide prevention strategies into those service system platforms is an efficient way to deliver care to those with heightened need. The data sets that reveal these patterns have both strengths (e.g., population-level) and weaknesses (e.g., lack of longitudinal data linking changing health status, intervention encounters, suicidal behavior, and death records). Some of the data needed for crafting a comprehensive, public health – based approach for dramatically reducing suicide are currently available or may be available in the near term. Other resources will have to be built, perhaps by enhancing existing federal surveillance systems or constructing new ones. The article concludes with suggestions for immediate and longer-term actions that can strengthen public data resources in the service of reducing suicide in the U.S.


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