High-volume lung transplant centers have lower transplantation costs and their patients are less likely to be readmitted within 30 days of leaving the hospital following surgery, according to a new study of more than 3,000 Medicare patients who received lung transplants.

"The Effect of Transplant Center Volume on Cost and Readmission in Medicare Lung Transplant Recipients" was published online ahead of print in the Annals of the American Thoracic Society.

Previous research established that patient survival is higher at high-volume lung transplant centers. It is unknown, however, whether these better outcomes require more resources or result from better care delivery that might require fewer resources.

University of Texas at Arlington researchers have found that by age 3 environmental influences such as parenting are relevant factors in the development of toddlers' self-control when they are asked not to do something they want to do, such as run into the street or eat a forbidden snack.

"Understanding the development of self-control mechanisms is vital as individuals with low levels of inhibitory control develop more cognitive and socio-emotional development issues, including attention deficit hyperactivity disorder or ADHD," said Jeffrey Gagne, an assistant professor of psychology in UTA's College of Science and co-author of the study.

COLUMBIA, Mo. - Standard treatment for prostate cancer can include chemotherapy that targets receptors on cancer cells. However, drug-resistant cancer cells can emerge during chemotherapy, limiting its effectiveness as a cancer-fighting agent. Researchers at the University of Missouri have proven that a compound initially developed as a cholesterol-fighting molecule not only halts the progression of prostate cancer, but also can kill cancerous cells.

DURHAM, N.C. -- It's a long-simmering debate in juvenile justice: Do young offenders become worse because of their experience with the justice system, or are they somehow different than people who don't have their first criminal conviction until later in life?

"There seems to be a lot of evidence that people who are convicted early are more heavily involved in crime," says postdoctoral researcher Amber Beckley at Duke University, who has a new study out on the topic that appears online in the Journal of Criminal Justice.

Using data from a study that has tracked nearly 1,000 New Zealanders from birth to age 38, Beckley looked at patterns that would distinguish youthful offenders from what she calls "adult-onset offenders."

New York, NY, April 14, 2016. In a recent study, researchers found evidence of a compromised dopamine system in heavy users of marijuana. Lower dopamine release was found in the striatum - a region of the brain that is involved in working memory, impulsive behavior, and attention. Previous studies have shown that addiction to other drugs of abuse, such as cocaine and heroin, have similar effects on dopamine release, but such evidence for cannabis was missing until now.

RIVERSIDE, Calif. - Research strongly suggests that sleep, which constitutes about a third of our lives, is crucial for learning and forming long-term memories. But exactly how such memory is formed is not well understood and remains, despite considerable research, a central question of inquiry in neuroscience.

Neuroscientists at the University of California, Riverside report this week in the Journal of Neuroscience that they now may have an answer to this question. Their study provides for the first time a mechanistic explanation for how deep sleep (also called slow-wave sleep) may be promoting the consolidation of recent memories.