COLUMBUS, Ohio - When children are unmotivated at school, new research suggests their genes may be part of the equation. A study of more than 13,000 twins from six countries found that 40 to 50 percent of the differences in children's motivation to learn could be explained by their genetic inheritance from their parents. The results surprised study co-author Stephen Petrill, who thought before the study that the twins' shared environment - such as the family and teachers that they had in common - would be a larger factor than genetics. Instead, genetics and nonshared ...

The pseudogap, a state characterized by a partial gap and loss of coherence in the electronic excitations, has been associated with many unusual physical phenomena in a variety of materials ranging from cold atoms to colossal magnetoresistant manganese oxides to high temperature copper oxide superconductors. Its nature, however, remains controversial due to the complexity of these materials and the difficulties in studying them. By combining a variety of different experimental techniques and theory, a group led by researchers at the U.S. Department of Energy's Argonne ...

Philosophers at the Ruhr-Universität Bochum have put forward a new model that explains how humans recognise the emotions of others. According to their theory, humans are capable of perceiving feelings directly via pattern recognition. They do not have to deduce feelings by interpreting other people's behaviour. That model is described by the philosophers Prof Dr Albert Newen and Dr Anna Welpinghus, together with Prof Dr Georg Juckel from the LWL University Hospital for Psychiatry, in the journal Mind & Language. An emotion is a pattern of typical features A key ...

The results of the first study using a health economics model to project osteoporosis-related fractures and costs for the Chinese population, shows that the country's healthcare system will face a dramatic rise in costs over the next few decades. The study forecasts that the incidence and costs of osteoporotic fractures in China will double by 2035, with costs rising to approximately USD 25.58 billion by 2050. In the study, published in the journal 'Osteoporosis International', investigators from the University of Tasmania, Anhui Medical University and Nanjing Medical ...

The organic chemicals in fracking fluid have been uncovered in two new studies, providing a basis for water contamination testing and future regulation. The research, published in Trends in Environmental Analytical Chemistry and Science of the Total Environment, reveals that fracking fluid contains compounds like biocides, which are potentially harmful if they leak into the groundwater. The authors behind the new study say it's time for the relatively new science to catch up with the extensive public awareness. They say an increasing research focus on contamination from ...

Every third teenager has suffered from one mental disorder and one physical disease. These co-occurrences come in specific associations: More often than average, depression occurs together with diseases of the digestive system, eating disorders with seizures and anxiety disorders together with arthritis, heart disease as well as diseases of the digestives system. These findings were reported by researchers from the University of Basel and the Ruhr-Universität Bochum. Their results based on data from 6,500 U.S. teenagers have been published in the scientific journal ...

Genetic research helps to explain why tracing the source of an outbreak of Legionnaires' disease that claimed four lives has proven to be more complicated than scientists hoped. A DNA study of bacteria samples taken from patients infected during the 2012 outbreak in Edinburgh shows that it was caused by several subtypes of the bacteria. The unexpected discovery means that tracing the source of this - and any future outbreaks - will be challenging, researchers say. There were 92 confirmed or suspected cases during the outbreak in 2012 in addition to the four deaths. ...

AURORA, Colo. (April 8, 2015) - The U.S. Surgeon General should declare that indoor ultraviolet radiation tanning causes skin cancer, according to an article published today by the American Journal of Preventive Medicine. Robert P. Dellavalle, MD, PhD, MSPH, associate professor of dermatology at the University of Colorado School of Medicine on the Anschutz Medical Campus, is the corresponding author of the article, which says there is enough evidence for the Surgeon General to clearly state that use of indoor tanning beds causes skin cancer. Dellavalle and his co-authors ...

COLUMBIA, Mo. - Technological advances in recent decades have transformed most aspects of daily life, and technology now plays a major role in business and society. However, little is known about how perceptions of technology might influence decision-making. Now, University of Missouri researchers have shown that people tend to overestimate the likelihood of new technologies' success; this overconfidence can influence important decisions, such as investment choices. "Technology has advanced to the extent that people may not understand how a particular technology works, ...

(SACRAMENTO, Calif.) -- Regardless of their racial, ethnic, educational or socioeconomic background, women seek help for a frustrating -- and ubiquitous -- feature of becoming "a woman of a certain age:" the need be close to the women's room. Those are the findings of a large study by UC Davis of urinary incontinence in menopausal women, based on data from the Study of Women's Health Across the Nation (SWAN), a nine- year investigation of diverse menopausal women from six sites across the United States. The study is published online today in Obstetrics and Gynecology. The ...

WASHINGTON, April 8, 2015-- A healthcare, industry-first collaborative blueprint for labor and delivery safety, developed by four leading professional organizations in maternal health, calls for improving communication among clinicians, team leaders, administrators, health care providers, organizations, and patients to ensure fewer risks and better outcomes for mothers and babies. The four collaborating organizations are the American College of Nurse-Midwives; the American College of Obstetricians and Gynecologists; the Association of Women's Health, Obstetric and Neonatal ...

Humans carry an average of one to two mutations per person that can cause severe genetic disorders or prenatal death when two copies of the same mutation are inherited, according to estimates published today in the journal Genetics. The new numbers were made possible by a long-term collaboration between medical researchers and a unique community that has maintained detailed family histories for many generations. "These records offered a fantastic opportunity to estimate disease mutation carrier rates in a new way that disentangles the effects of genetic and socioeconomic ...

A new study has thrown light on how people can become killers in certain situations, showing how brain activity varies according to whether or not killing is seen as justified. The study, led by Monash researcher Dr Pascal Molenberghs, School of Psychological Sciences, is published today in the journal Social Cognitive and Affective Neuroscience. Participants in the study played video games in which they imagined themselves to be shooting innocent civilians (unjustified violence) or enemy soldiers (justified violence). Their brain activity was recorded via functional ...

Dengue is a viral infection spread between humans by Aedes aegypti mosquitoes. Dengue causes flu-like symptoms, including intense headaches and joint pains. Published in the journal Science Translational Medicine, Professor Cameron Simmons, from the Department of Microbiology and Immunology at the University of Melbourne and the Peter Doherty Institute for Infection and Immunity, said that the discovery could lead to improved strategies to reduce the incidence of dengue. "We did a 'real world' experiment and allowed mosquitoes infected with Wolbachia and uninfected mosquitoes ...

This news release is available in German. You're up in the mountains, the snow is blindingly white, and the sun is blazing down from the sky: ideal skiing conditions - but any skiers carrying the herpes virus might also have to reckon with the onset of cold sores after their day out. Increased exposure to UV radiation releases free radicals in the body. These put the body under oxidative stress, which weakens the immune system. And that in turn allows the herpes virus to prosper. Oxidative stress has become a major topic; not only is it implicated in many diseases, ...

A new study shows that discrimination of gay and lesbian job seekers is commonplace within both private firms and the public sector in the UK. The research, carried out by Dr Nick Drydakis of Anglia Ruskin University and published by SAGE in the journal Human Relations, involved 144 young people - all first-time job seekers - making 11,098 applications. The study, the first of its kind ever conducted in the UK, found that gay applicants of both sexes are 5% less likely to be offered a job interview than heterosexual applicants with comparable skills and experience. The ...

(SALT LAKE CITY)--Recent research has linked the thin air of higher elevations to increased rates of depression and suicide. But a new study shows there's also good news from up in the aspens and pines: The prevalence of attention deficit hyperactivity disorder (ADHD) decreases substantially as altitude increases. In Utah, for example, an analysis of information from two national health surveys correlated with the average state elevation of 6,100 feet showed that the rate of diagnosed ADHD cases is about 50 percent of states at sea level. In Salt Lake City, whose elevation ...

DURHAM, N.C. - An estimated 9 percent of adults in the U.S. have a history of impulsive, angry behavior and have access to guns, according to a study published this month in Behavioral Sciences and the Law. The study also found that an estimated 1.5 percent of adults report impulsive anger and carry firearms outside their homes. Angry people with ready access to guns are typically young or middle-aged men, who at times lose their temper, smash and break things, or get into physical fights, according to the study co-authored by scientists at Duke, Harvard, and Columbia ...

Amsterdam, The Netherlands, April 8, 2015 -- Non-alcoholic fatty liver disease (NAFLD) is the most common cause of chronic liver disease in the western world. A new study published in the Journal of Hepatology shows that exercise, regardless of frequency or intensity, benefits obese and overweight adults with NAFLD. NAFLD is considered the hepatic manifestation of metabolic syndrome and is commonly associated with obesity and diabetes. There are no approved drug treatments for NAFLD, but lifestyle interventions such as diet, exercise, and the resulting weight loss have ...

A July, 2014 Call to Action to Prevent Skin Cancer by acting Surgeon General Dr. Boris Lushniak points out that indoor tanning is "strongly associated with increased skin cancer risk," but stops short of reporting that tanning causes cancer. A University of Colorado Cancer Center opinion published today in the American Journal of Preventive Medicine points out that UV tanning meets the same criteria as smoking as a cause of cancer and argues that announcing the causality could save lives. "In 1964 when the Surgeon General finally reported that smoking causes lung cancer, ...

The secret communication of gibbons has been interpreted for the first time in a study published in the open access journal BMC Evolutionary Biology. The research reveals the likely meaning of a number of distinct gibbon whispers, or 'hoo' calls, responding to particular events and types of predator, and could provide clues on the evolution of human speech. While lar gibbons (Hylobates lar) are mainly known for their loud and conspicuous songs, they can also produce a number of soft call types known as 'hoo's. These subtle calls have been alluded to in studies dating ...

Life has adapted to all sorts of extreme environments on Earth, among them, animals like the deer mouse, shimmying and shivering about, and having to squeeze enough energy from the cold, thin air to fuel their bodies and survive. Now, in a new publication in the journal Molecular Biology and Evolution, Scott, Cheviron et al., have examined the underlying muscle physiology from a group of highland and lowland deer mice. Deer mice were chosen because they exhibit the most extreme altitude range of any North American mammal, occurring below sea levels in Death Valley to ...

Cold Spring Harbor, NY - The prefrontal cortex (PFC) plays an important role in cognitive functions such as attention, memory and decision-making. Faulty wiring between PFC and other brain areas is thought to give rise to a variety of cognitive disorders. Disruptions to one particular brain circuit--between the PFC and another part of the brain called the thalamus--have been associated with schizophrenia, but the mechanistic details are unknown. Now, Cold Spring Harbor Laboratory scientists have discovered an inhibitory connection between these brain areas in mice that ...

The Burgess Shale Formation, in the Canadian Rockies of British Columbia, is one of the most famous fossil locations in the world. A recent Palaeontology study introduces a 508 million year old (middle Cambrian) arthropod--called Yawunik kootenayi--from exceptionally preserved specimens of the new Marble Canyon locality within the Burgess Shale Formation. Its frontal appendage--the "megacheiran great appendage"--is remarkably adorned with teeth, emphasizing an advanced predatory function. The appendage also had long hair-like flagella at the end that likely served a sensory ...

Why do some people learn a new skill right away, while others only gradually improve? Whatever else may be different about their lives, something must be happening in their brains that captures this variation. Researchers at the University of Pennsylvania, the University of California, Santa Barbara, and Johns Hopkins University have taken a network science approach to this question. In a new study, they measured the connections between different brain regions as participants learned to play a simple game. The differences in neural activity between the quickest and slowest ...