Children can get fat watching TV in their bedrooms

I am shocked--shocked!--to find that children who have TV sets in their bedrooms are more likely to watch television than those who don't. As reported by QMI Agency, December 11, 2012:

Children with TVs in their bedrooms are more likely to be at risk of obesity, a new study has found.

Researchers looked at 369 children aged 5 to 18 in Baton Rouge, La., noting their waist circumference, blood pressure, cholesterol, fat mass and stomach fat. The data showed that not only were those with TVs in their bedrooms more likely to watch more TV, they also had more fat mass and a higher waist circumference compared to those without a bedroom TV.

Study participants with a TV in the bedroom and those who watched more than two hours of television a day had up to 2.5 times the odds of having the highest levels of fat mass.

"A bedroom TV may create additional disruptions to healthy habits, above and beyond regular TV viewing," study co-author Amanda Staiano said.

The study was published in the American Journal of Preventive Medicine.

Go here to see the abstract of the original article.

Ice cream melts and beer gets warm in hot weather

And now for something completely different: An item about a major discovery by a reporter rather than by a scientist. The Edmonton Journal is a giant advertising flyer masquerading as a newspaper that's heading in the same direction as the Seattle Post-Intelligencer and Tucson Citizen; it will likely fold as a print newspaper and exist as an online-only collection of blogs. An example of the kind of story that frequently gets put on the front page is this ice cream "scoop" by Manisha Krishnan, published on July 11, 2012:

EDMONTON - With temperatures soaring Tuesday to 31 C in Edmonton, concerns about heat stroke and power shortages were top of mind for many.

But the Journal set out to address a couple of other important issues. Specifically, ­what type of ice cream can beat the heat? And how long does it take before a beer sitting in the sun becomes undrinkable?

Armed with samples, a thermometer and cameras, we captured the results of two experiments.

Here is what we discovered:


Experiment 1: Battle of the cones

Objective: Find out how long it takes for ice cream to melt in the sun.

Hypothesis: Treats that are frozen solid, such as Creamsicles, last the longest.

Results: Ice cream is usually great but the sweet, sticky remnants of it running down an enclosed fist is not...

...Experiment 2: Beer blues

Objective: Determine how long it takes for beer to become undrinkably warm.

Hypothesis: Around 15 minutes. Having said that, there are some people who might never find beer undrinkable.

Results: Drinking a cold beer is one of the most enjoyable activities to indulge in on a scorcher. But at what point do those rays start to ruin a delicious drink?

We settled down with a pint of Mill Street Organic Ale on a sunny patio at The Pourhouse Bier Bistro to find out. It was 31 C at 4:15 p.m.

The plan was to record temperature increases every few minutes and ask tester Jorge Lima, 19, to share his thoughts on the taste of the beverage.

The beer came out of the tap at 4 C. Eight minutes later it was up by 11 C.

“It’s still drinkable. It’s not at the temperature you’d want it to be,” Lima said.

By 4:40 p.m., the beer had reached about 20 C.

“It’s getting to the point where it’s not enjoyable any more. You’re just finishing it because you already spent the money,” said Lima, adding that the beer smelled a lot stronger and had a metallic after-taste.

Kids who watch a lot of TV tend to eat a lot of junk food

As reported by Genevra Pittman of Reuters, May 10, 2012:

Children and teens who watch a lot of television are less likely to get their fruits and vegetables and more likely to snack on candy or drink soda every day, according to a survey of close to 13,000 U.S. students.

The link to poor eating habits remained even after the researchers, whose findings appeared in the Archives of Pediatrics & Adolescent Medicine, took into account how much exercise kids typically got as well as how often they snacked while in front of the television.

Though the findings weren't particularly surprising, researchers couldn't tell which came first, the extra TV or poor eating habits. Thus, the study alone can't prove that watching too much TV causes children to make poor diet choices.

But it does jibe with past research showing that when children have their TV time cut back, they tend to eat less and may lose weight, the researchers aid.

"It certainly is consistent with the idea that TV is maybe adversely affecting dietary intake and food choices," said Leah Lipsky, who worked on the new study at the Eunice Kennedy Shriver national Institute of Child Health and Human Development, along with colleague Ronald Iannotti.

Previous studies have also suggested that young people who spend more time in front of the television are more likely to be overweight or obese. One explanation is that advertisements promoting fast food and sweets during kids' programming may be driving youth towards unhealthy foods, experts have said.

The survey looked at a nationally-representative group of 12,642 private and public school students who watched an average of two and a half hours of TV each day.

The researchers found that for every extra hour of daily TV watching reported by children from roughly age 10 to 16, they were five percent less likely to eat vegetables every day and eight percent less likely to get daily fruit.

Each extra average hour of TV also meant kids were 18 percent more likely to say they ate candy each day, 24 percent more likely to drink soda at least daily and 14 percent more likely to go to fast food restaurants once a week or more.

That was after taking into account survey participants' age, gender, race and how well-off their families were.

"The effect of television is extending beyond just when they're snacking and watching television," Iannotti told Reuters health. That means it's important both for parents to limit TV time - and thus exposure to food-related commercials - and to make sure healthy snacks are available when children are watching TV or otherwise engaged in "screen time" in front of a computer, he added.

University students are surprised to discover that tourists buy souvenirs to remind them of places they've been

The word "souvenir" is a French word, a reflexive verb (se souvenir de) meaning "to remember." Apparently, University of Alberta human ecology students were unaware of this. As reported by Marta Gold in the Edmonton Journal, April 8, 2012:

EDMONTON - Nothing says “souvenir” like an I-‘heart’-NY T-shirt or a tiny replica of the Eiffel Tower.

Whether you think of them as tacky trinkets or treasured mementos, they indisputably make us think of faraway places and vacation experiences.

A new exhibit at the University of Alberta explores these ideas and the holiday souvenirs that inspire them in a show called “Greetings From ….”

Compiled by fourth-year human ecology students, the keepsakes were gathered from the department’s clothing-and-textiles collection as well as from students and staff.

The items range from the simple and iconic — tourist T-shirts and models of international landmarks — to the handmade and intricate, such as a mask from Venice and a wall hanging from Egypt.

Some are created from indigenous materials by local craftspeople, such as the African coasters carved out of tree bark, while others are cheap imports hawked to tourists, such as the dashboard hula girl from Hawaii.

But interestingly, the cost or quality of the memento has little bearing on its value to the owner, says Megan Strickfaden, the U of A professor who taught the students in a class on material culture in the home and the community.

“It’s really more about the connection they make with those objects.”

That was among the discoveries students made through the project, which required each of them to write a proposal and then vote on a favourite for the class project.

The theme they chose was submitted by student Holly Postma-Strand, who suggested focusing on travel souvenirs – “the kinds of objects people collect, why they collect those objects and how they are important to individuals,” Strickfaden says.

Souvenirs are particularly interesting because of the “dual conversation” they create, she says.

They’re made or imported to represent a particular city or country, but they have a whole other meaning and significance to the visitors who then buy them — usually, as a reminder of their holiday.

Even though the small Eiffel Tower was likely produced in China and has little connection to anything truly Parisien, to the person who buys it, it represents their actual experience, Strickfaden says.

“No matter what the artifact is, whether it’s inexpensive or expensive, whether it’s handmade or mass produced, it’s still an authentic representation for the person who purchased it, because it represents that moment in time, that experience that that individual had, visiting that culture.”

That came as a surprise to some of the 23 students in the class, she adds.

“I think for the students, they went in being biased, thinking that if something’s made in China it can’t actually represent (another) culture. But, in fact, it can for the individual who’s purchased it.”

The items in the exhibit include 10 from the U of A collection and another 20 or so from students and staff. They include musical instruments from China, a boomerang and didgeridoo from Australia, a doll from Mexico and a kimono from Japan.

Each is accompanied by the story of its origin from the student or staff member who bought it.

“The personal stories are often very quirky, because people acquire things for interesting reasons,” Strickfaden says. “They make connections with those objects after they return home, as well.”

She submitted several of her own souvenirs, including a cookbook she received in Belgium, where she used to live. When she left, friends gave it to her, explaining cookbooks are usually given to teens when they leave home. “They wanted to give it to me because they wanted me to remember Belgium as a home for years to come.”

The kimono was given to her in Japan by the mother of a student she had helped take care of by teaching her in Canada, Strickfaden explains.

Robyn Stobbs, one of the students who helped choose the items from the university’s collection, says working on a project with the entire class and putting an exhibition together was a great experience.

Her own contribution, a small clay flute she picked up in China, was clearly made for tourists — it even came with English and Chinese instructions. “Yet it still has a great deal of meaning to me,” she says.

One of her favourite pieces in the exhibit is a set of beautiful nesting dolls from Russia, she says.

The exhibit runs until May 21 in the main lobby of the U of A’s Human Ecology Building at the corner of 116th Street and 90th Avenue.

It’s open from 8 a.m. to 9 p.m. weekdays, Saturdays from 8 a.m. to 4 p.m. and Sundays from noon to 4 p.m. Admission is free.

May 17, 2012 update: I just visited this exhibit, and there's really not much to it. Some of the items are more interesting than others; many of the items are the sort that might strike tourists as exotic, while the natives probably regard them as trinkets of the sort that you can find in any souvenir shop.

Stupid young males tend to be oblivious to their surroundings while listening to headphones

As reported by Joan Delaney in The Epoch Times, February 20, 2012 (updated February 25, 2012):

The deaths of two headphone-wearing high school students who were struck by trains in separate incidents just hours apart last week brought home the dangers of being oblivious to surrounding sounds when walking near train tracks.

On Feb. 13 around 3:00 p.m., 16-year-old Jacob Hicks was hit by a train at a level crossing in Oshawa, Ont., while texting and listening to music on headphones. He died later in hospital.

The automated lights and bells at the crossing were active at the time, but police said the music Hicks was listening to was likely so loud it drowned out the warnings, according to media reports.

The same afternoon, 19-year-old Daniel McPherson was walking along the tracks in Leduc, south of Edmonton, when he was struck and killed by a freight train. He was also wearing headphones.

McPherson appeared not to hear the train’s squealing brakes and whistle as the driver tried desperately to alert him.

If a recent U.S. study is anything to go by, the tragic incidents demonstrate a growing problem, particularly among young people.

According to research from the University of Maryland School of Medicine and the University of Maryland Medical Center in Baltimore, the number of injuries and deaths in headphone-related collisions in the U.S. has increased dramatically in recent years—and the victims are mostly young males.

Between 2004 and 2011, the researchers reviewed 116 accidents in which injured pedestrians were documented to be using headphones.

Seventy percent of the 116 accidents resulted in the death of the pedestrian. More than two-thirds of victims were male (68 percent) and under the age of 30.

Fifty-five percent of the moving vehicles involved in the accidents were trains, and 29 percent of the vehicles reported sounding some type of warning horn prior to the collision.

The researchers came to the conclusion that the increased incidence of accidents over the years closely corresponds to the rising popularity of auditory technologies with headphones.

“Everybody is aware of the risk of cellphones and texting in automobiles, but I see more and more teens distracted with the latest devices and headphones in their ears,” said lead author Dr. Richard Lichenstein, associate professor of paediatrics at the University of Maryland School of Medicine.

“Unfortunately, as we make more and more enticing devices, the risk of injury from distraction and blocking out other sounds increases.”
Distraction, Sensory Deprivation

The researchers noted two likely phenomena associated with the injuries and deaths: distraction and sensory deprivation.

The distraction caused by the use of electronic devices has been dubbed “inattentional blindness,” in which an individual fails to notice a fully visible but unexpected object because his attention is otherwise engaged.

In cases of headphone-wearing pedestrians being struck by trains or vehicles, the distraction is intensified by sensory deprivation—the pedestrian’s ability to hear warning signals is hampered by the sounds produced by the electronic device and headphones.

The Sherlockian powers of observation and deduction on the part of the researchers are positively dazzling, especially when they attribute the accidents to "distraction and sensory deprivation." For those who may not have the scientific expertise to figure this out, it means that the stupid yutes have the volume turned up too loud, and they're not paying enough attention to their surroundings to notice oncoming trains.

These tragedies can be easily avoided by doing three things:
1/ Turn down the volume;
2/ Look up and around and show some awareness of your surroundings;
3/ Remember that railroad tracks are there for the movement of trains, and aren't intended as paths for pedestrians.

Close friendships are good for you

The psychologists who conducted this study apparently have no close friends themselves, or they'd already know this. As reported by Anne Sutherland in the Montreal Gazette, January 29, 2012:

MONTREAL - ..."We've long studied the effects of friendship on the behaviour and emotional well-being of children and we wanted to see if the HPA axis (hypothalamic, pituitary and adrenal systems) varied (under stress) when a friend is with you," said William Bukowski of his study published in the journal Developmental Psychology.

If a child is alone when he or she gets into trouble, there is a measurable increase in levels of a coping hormone and a decrease in feelings of self-worth, Bukowski said.

A group of schoolchildren, in Grades 5 and 6, were given journals to record their feelings and had their saliva tested four times a day for four consecutive days.

For privacy reasons, Bukowski would not reveal which school the children attended, but said they came from all walks of life.

They were tested and questioned before school, right after recess, after lunch and after school, the classic schoolyard periods outside of class time when bullying or hassling are most prevalent.

When the body is stressed, the adrenal glands produce cortisol, a hormone that metabolizes sugar to provide energy for the flight or fight reaction.

Bukowski and his team looked for levels of cortisol in the children as an indicator of stress levels.

Bukowski's participants who were with their best friends showed lower levels of the hormone during stressful situations.

"We knew what the experiences the kids were having through their journals, so we could monitor the cortisol levels of both positive and negative experiences," he said.

The researchers found no discernible gender difference between boys and girls and their best friends.

"We chose kids in Grades 5 and 6 because friendships are very important at this age and the child is developing the emotional patterns that will continue through adolescence," Bukowski said.

Besides handling stress, having a best friend is very good training for all that life has to offer, teaching children to take into account the needs of others and not to be selfish, Bukowski said...

Boys will be boys: Men are wired to be aggressive

Some scientists--at least the ones who came up with the study cited below--have apparently never experienced aggression in academia, and are therefore substituting a "review of the academic literature" for the experiences of a normal life. As reported by Nick Collins of the London Daily Telegraph, January 23, 2012:

The "male warrior" instinct means that men are programmed to be aggressive towards anyone they view as an outsider, a study claims.

In evolutionary terms an instinct for violence against others helped early men improve their status and gain more access to mates, but in modern terms this can translate into large-scale wars.

In contrast women are naturally equipped with a "tend and befriend" attitude which means they seek to resolve conflicts peacefully in order to protect their children, researchers said.

The study, published in the Philosophical Transactions of the Royal Society B, is a review of evolutionary evidence for the so-called "male warrior hypothesis".

It claims that in every culture throughout history, men have been more likely than women to use violence when confronted by people they saw as outsiders.

The "tribal" attitude of men, ultimately aimed at boosting their chances of reproducing, is similar to the territorial behaviour of chimpanzees, it was claimed.

The study also examined evidence which suggests men have a stronger sense of group identity than women, and that they will develop closer ties with others in their group if they are in competition with rivals.

Although men's hostile responses most likely evolved to combat the threat from outsiders, they "might not be functional in modern times and are often counterproductive," experts said.

Over time this has resulted in full-scale wars between countries and empires, and also in scraps and skirmishes between rival groups of football supporters and urban gangs.

Prof Mark van Vugt, who led the study, said: "A solution to conflict, which is an all too common problem in societies today, remains elusive. One reason for this might be the difficulty we have in changing our mindset, which has evolved over thousands of years.

"Our review of the academic literature suggests that the human mind is shaped in a way that tends to perpetuate conflict with ‘outsiders’."

The original article, titled Evolution and the psychology of intergroup conflict: the male warrior hypothesis, is by Melissa M. McDonald, Carlos David Navarrete1, and Mark Van Vugt, and appears in Philosophical Transactions of the Royal Society B, 367 (1589), March 5, 2012, pp. 670-679.