Two Hours At TV Or Computer Screen Linked To Psychological Problems In Kids

A child who spends at least two hours a day in front of a TV screen or computer monitor has a significantly higher risk of developing psychological problems, no matter how much physical activity they do, researchers from the University of Bristol's Centre for Exercise, Nutrition and Health Sciences, England reported in an article published in the American Journal of Pediatrics. The more physically active children who were in front of a screen for at least two hours a day appeared to do better than their sedentary peers in emotional and peer problems, but fared worse in behavioral areas, including hyperactivity.

This latest study, called The PEACH project, assessed over 1,000 kids aged ten and eleven years. The investigators gathered data on how long they spent in front of a computer monitor and/or TV screen, as well as their mental health. The children's levels of physical activity were measured and recorded using an activity monitor.

The researchers found that those children who spend at least two hours watching TV and/or using their computer for non-homework use (recreational use) had higher psychological difficulty scores compared to their peers who spent less time in front of screens. The investigators add that the difficulty scores persisted, irrespective of how physically active the children were.

In other words, it appears that regular prolonged exposure to monitors/screens increases the risk of psychological problems, and exercise does not seem to get rid of the problem.

The authors believe that limiting a child's exposure to TV/Computer screens could play an important role in protecting their current and future mental health and well-being.

Source: "Children's Screen Viewing is Related to Psychological Difficulties Irrespective of Physical Activity"

Study links bullying to cognitive deficits, brain changes

By ANNE MCILROY, Toronto Globe and Mail

They lurk in hallways, bathrooms, around the next blind corner. But for the children they have routinely teased or tormented, bullies effectively live in the victims' brains as well -- and not just as a terrifying memory.

Preliminary evidence shows that bullying can produce signs of stress, cognitive deficits and mental-health problems.

Now University of Ottawa psychologist Tracy Vaillancourt and her colleagues at McMaster University in Hamilton, Ontario plan to scan the brains of teens who have been regularly humiliated and ostracized by their peers to look for structural differences compared with other children.

"We know there is a functional difference. We know their brains are acting differently, but we don't know if it is structural as well," said Vaillancourt, an expert in the biology of bullying.

She says she hopes her work will legitimize the plight of children who are bullied, and encourage parents, teachers and school boards to take the problem more seriously.

Vaillancourt has been following a group of 17-year-olds since they were 12. All 70 of the children were routinely bullied during those years -- teased, harassed, threatened or excluded.

Physical violence is relatively rare, she says, because their tormentors are smart enough to know it will get them into trouble.

"For many of these kids, every day is a nightmare," she said. They go to school and no one will talk to them. Someone deliberately bumps into them in the hallway, and all the other children laugh. They get called horrible names.

The researchers will start with brain scans of 15 of the extreme cases, like the child who stood in her gym uniform while other kids put her school clothes in the toilet and urinated on them.

There are also teenagers in the study who have been bullied for five straight school years.

The scientists have already shown that children who are bullied are more likely than other kids to have cognitive deficits.

They score lower on tests that measure verbal memory and executive function, a set of skills needed to focus on a task and get the job done. Mental-health problems, such as depression, are also more common.

Vaillancourt suspects they will also have a smaller hippocampus, a part of the brain involved in memory. Depression has been shown to be related to a smaller hippocampus. As well, animal studies have shown that chronic high levels of stress can kill brain cells. Vaillancourt says this kind of damage may help explain why children who are bullied often perform poorly academically.

She will also be looking for a smaller prefrontal cortex, which plays a role in being able to pay attention and other executive functions.

These kinds of differences have been documented in functional magnetic resonance imaging, or MRI, studies of children who have been neglected or abused. Vaillancourt suspects the chronic stress of being bullied will have a similar impact.

She and her colleagues have already published research showing that boys who are bullied tend to produce more of the stress hormone cortisol. It is as if their system is in permanent overdrive.

It's the opposite for the girls; they tend to produce less cortisol than average, as though their stress response system is overly subdued.

"At some point, their brains stop reacting," said Vaillancourt, who holds a Canada Research Chair in children's mental health and violence prevention.

These changes to the brain's stress response system may be linked to the higher rates of depression among children who are regularly picked on by their peers, especially girls. The adolescent years are when peer relations are most important and when girls, more than anything, want to belong, Vaillancourt says.

(Distributed by Scripps Howard News Service, www.scrippsnews.com.)

Study: Depression seen in children as young as 3

By LINDSEY TANNER, AP Medical Writer Lindsey Tanner, Ap Medical Writer – Mon Aug 3, 5:17 pm ET

CHICAGO – Depression in children as young as 3 is real and not just a passing grumpy mood, according to provocative new research.

The study is billed as the first to show major depression can be chronic even in very young children, contrary to the stereotype of the happy-go-lucky preschooler.

Until fairly recently, "people really haven't paid much attention to depressive disorders in children under the age of 6," said lead author Dr. Joan Luby, a psychiatrist at Washington University in St. Louis. "They didn't think it could happen ... because children under 6 were too emotionally immature to experience it."

Previous research suggested that depression affects about 2 percent of U.S. preschoolers, or roughly 160,000 youngsters, at one time or another. But it was unclear whether depression in preschoolers could be chronic, as it can be in older children and adults.

Luby's research team followed more than 200 preschoolers, ages 3 to 6, for up to two years, including 75 diagnosed with major depression. The children had up to four mental health exams during the study.

Among initially depressed children, 64 percent were still depressed or had a recurrent episode of depression six months later, and 40 percent still had problems after two years. Overall, nearly 20 percent had persistent or recurrent depression at all four exams.

Depression was most common in children whose mothers were also depressed or had other mood disorders, and among those who had experienced a traumatic event, such as the death of a parent or physical or sexual abuse.

The new study, funded by the National Institute of Mental Health and released Monday in the August issue of Archives of General Psychiatry, did not examine depression treatment, which is highly controversial among children so young. Some advocates say parents and doctors are too quick to give children powerful psychiatric drugs.

Though sure to raise eyebrows among lay people, the notion that children so young can get depressed is increasingly accepted in psychiatry.

University of Chicago psychiatrist Dr. Sharon Hirsch said the public thinks of preschoolers as carefree. "They get to play. Why would they be depressed?" she said.

But depression involves chemical changes in the brain that can affect even youngsters with an otherwise happy life, said Hirsch, who was not involved in the study.

"When you have that problem, you just don't have that ability to feel good," she said.

And, in fact, Luby said she has separate, unpublished research showing that chemical changes seen in older children also occur in depressed preschoolers.

Dr. Helen Egger, a Duke University psychiatrist who also has studied childhood depression, said it is common among people in her field to first see depressed kids in their teens. Their parents will say symptoms began very early in childhood, but they were told, "Your child will grow out of them," Egger said.

Typical preschoolers can be moody or have temper tantrums, but they quickly bounce back and appear happy when playing or doing everyday activities. Depressed children appear sad even when playing, and their games may have themes of death or other somber topics. Persistent lack of appetite, sleep problems, and frequent temper tantrums that involve biting, kicking or hitting also are signs of possible depression, Egger said.

Luby said another sign is being preoccupied with guilt over common mishaps. For example, a depressed 3-year-old who accidentally breaks a glass might keep saying, "Mommy, I'm sorry I did that," and appear unable to shake off that sense of guilt for days, she said.

University of Massachusetts psychologist Lisa Cosgrove said she is skeptical about the accuracy of labeling preschoolers as depressed, because diagnostic tools for evaluating mental health in children so young aren't as well tested as those used for adults.

And Cosgrove said that while early treatment is important for troubled children, "we just have to make sure that those interventions aren't compromised" by industry pressure to use drugs.

Previous research has suggested that rising numbers of preschoolers are taking psychiatric drugs, including Prozac, which is used to treat depression.

Egger said that there is little research on the effects of psychiatric medicine in very young children, and that psychotherapy should always be tried first.

Dr. David Fassler, a University of Vermont psychiatry professor, stressed that depression in very young children is still pretty rare. However, without treatment, "it can have a devastating and often lasting effect on a child's social and emotional development," he said.

"Hopefully, studies such as this will help parents, teachers, and pediatricians recognize the signs and symptoms of preschool depression so they make sure young children get the help they need and deserve," Fassler said.