Showing posts with label development. Show all posts
Showing posts with label development. Show all posts

Friday, December 6, 2013

Messy children make better learners

reposted from here


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PUBLIC RELEASE DATE:
2-Dec-2013
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Contact: Richard Lewis
richard-c-lewis@uiowa.edu
319-384-0012
University of Iowa 

Messy children make better learners

Study shows toddlers learn words for nonsolids better when getting messy in a highchair

 IMAGE: Don't let the mess in the high chair bother you. New research from the University of Iowa shows kids who get messy in the high chair are learning.
Click here for more information.
Attention, parents: The messier your child gets while playing with food in the high chair, the more he or she is learning.
Researchers at the University of Iowa studied how 16-month-old children learn words for nonsolid objects, from oatmeal to glue. Previous research has shown that toddlers learn more readily about solid objects because they can easily identify them due to their unchanging size and shape. But oozy, gooey, runny stuff? Not so much.
New research shows that changes if you put toddlers in a setting they know well, such as shoving stuff in their mouths. In those instances, word learning increases, because children at that age are "used to seeing nonsolid things in this context, when they're eating," says Larissa Samuelson, associate professor in psychology at the UI who has worked for years on how children learn to associate words with objects. "And, if you expose them to these things when they're in a highchair, they do better. They're familiar with the setting and that helps them remember and use what they already know about nonsolids."
In a paper published in the journal Developmental Science, Samuelson and her team at the UI tested their idea by exposing 16-month-olds to 14 nonsolid objects, mostly food and drinks such as applesauce, pudding, juice, and soup. They presented the items and gave them made-up words, such as "dax" or "kiv." A minute later, they asked the children to identify the same food in different sizes or shapes. The task required the youngsters to go beyond relying simply on shape and size and to explore what the substances were made of to make the correct identification and word choice.
Not surprisingly, many children gleefully dove into this task by poking, prodding, touching, feeling, eating—and yes, throwing—the nonsolids in order to understand what they were and make the correct association with the hypothetical names. The toddlers who interacted the most with the foods—parents, interpret as you want—were more likely to correctly identify them by their texture and name them, the study determined. For example, imagine you were a 16-month-old gazing at a cup of milk and a cup of glue. How would you tell the difference by simply looking?
"It's the material that makes many nonsolids," Samuelson notes, "and how children name them."
The setting matters, too, it seems. Children in a high chair were more apt to identify and name the food than those in other venues, such as seated at a table, the researchers found.
"It turns out that being in a high chair makes it more likely you'll get messy, because kids know they can get messy there," says Samuelson, the senior author on the paper.
The authors say the exercise shows how children's behavior, environment (or setting) and exploration help them acquire an early vocabulary—learning that is linked to better later cognitive development and functioning.
"It may look like your child is playing in the high chair, throwing things on the ground, and they may be doing that, but they are getting information out of (those actions)," Samuelson contends. "And, it turns out, they can use that information later. That's what the high chair did. Playing with these foods there actually helped these children in the lab, and they learned the names better."
"It's not about words you know, but words you're going to learn," Samuelson adds.
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Lynn Perry, who helped design the study and analyze the data as part of her doctoral studies at the UI, is the first author on the paper. Johanna Burdinie, who was an UI undergraduate during the project, is a contributing author.
The National Institutes of Health (grant number: R01 HD045713) funded the research. Burdinie was funded by a fellowship from the Iowa Center for Research for Undergraduates.


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Wednesday, November 13, 2013

Multiple birth pregnancies can cost nearly 20 times more than singleton pregnancies

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11-Nov-2013
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Contact: Eileen Leahy
ajogmedia@elsevier.com
732-238-3628
Elsevier Health Sciences 

Multiple birth pregnancies can cost nearly 20 times more than singleton pregnancies

Strategies to minimize multiple embryo transfer should be considered, say researchers in the American Journal of Obstetrics & Gynecology

Philadelphia, PA, November 11, 2013 – Multiple pregnancies are a major public health concern in the United States and the rest of the world due to the significantly higher health risks for both mothers and infants, as well as the impact on healthcare costs. Investigators analyzed and compared the cost of multiple versus single-birth pregnancies and found that pregnancies with delivery of twins cost about five times more than singletons, and pregnancies with delivery of triplets or more cost nearly 20 times as much. They call for strategies to reduce this burden. Their findings are published in the American Journal of Obstetrics & Gynecology.
Multiple pregnancies are increasing worldwide in parallel with increased use of reproductive technologies such as ovulation induction and in vitro fertilization (IVF). According to the Centers for Disease Control and Prevention (CDC), 3% of all infants born in the United States in 2010 were multiple deliveries. The twin birth rate was 33 per 1,000 total births, and the rate of triplets and more was 1.4 per 1,000 births. Experts generally agree that while less than half (about 40%) of twin births result from assisted reproductive technologies, this increases to around 80% of births of triplets or more.
The current study documents and compares costs associated with multiple pregnancies versus singletons in the United States, using the Truven Health MarketScan Commercial Claims and Encounters Database. The study population included all women aged 19-45 years who delivered at least one live born infant between January 2005 and September 2010. Investigators identified 437,924 eligible delivery events during the study period. Of these, about 97% (424,880) were singletons, 2.85% (12,482) were twins, and 0.13% (562) were triplets or more.
For mothers, the cost included medical expenses during the 27 weeks before and up to 30 days after the delivery date. For infants, costs contained all medical expenses up to their first birthday. This is the first study taking into account a comprehensive assessment of the incremental cost associated with multiple pregnancies by estimating all-cause medical expenses over this timeframe.
"By taking a broad approach, we have shown that medical expenses attributable to mothers and infants varied according to birth multiplicity," comments lead investigator Dongmu Zhang, PhD, Global Health Outcomes, Merck & Co. "For singleton pregnancy, maternal expenses accounted for about 60% of overall cost. whereas for twins or higher-order multiple births, expenses for infant care accounted for about 70% and 85% of total expenses, respectively."
The adjusted total all-cause healthcare cost was around $21,000 per delivery with singletons, $105,000 with twins, and over $400,000 with triplets or more.
The investigators took into account co-existing conditions, which they categorized into systemic conditions such as hypertension, cardiovascular disease, diabetes, edema/renal disease, genitourinary infection, thyroid disease, and anemia, and conditions in the reproductive tract. Women with twins or more had significantly higher co-existing conditions in each category than women who delivered singletons. Mothers with twins or triplets or more also had longer hospital stays for delivery and higher mortality.
"On average, combined all-cause healthcare expenses for mothers with twins or higher-order multiple births were about five and 20 times more expensive, respectively, than singleton delivery. The greater expenses were likely to have been due to increased maternal morbidities, significantly increased use of cesarean section and longer hospital stay for the deliveries in women with multiple pregnancies, and increased admission and longer stay in NICU for neonates of multiple gestations. We also demonstrated increased mortality for both mothers and infants associated with multiple pregnancies, although the absolute rates were small," Dr. Zhang adds.
To the researchers' knowledge, this is the first study that reports increased medical expenses for both maternal and infant care associated with IVF-assisted pregnancy. The researchers comment that for women undergoing IVF, the risk of multiple pregnancies is due nearly entirely to multiple embryo transfer, and recommend that strategies aiming at minimizing multiple embryo transfer should be considered to reduce the burden associated with multiple pregnancies.
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Musical training shapes brain anatomy and affects function: Training before age 7 has bigger impact on brain anatomy; improvisation can rewire brain

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12-Nov-2013
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Contact: Kat Snodgrass
media@sfn.org
202-962-4090
Society for Neuroscience 

Musical training shapes brain anatomy and affects function

Training before age 7 has bigger impact on brain anatomy; improvisation can rewire brain

SAN DIEGO — New findings show that extensive musical training affects the structure and function of different brain regions, how those regions communicate during the creation of music, and how the brain interprets and integrates sensory information. The findings were presented at Neuroscience 2013, the annual meeting of the Society for Neuroscience and the world's largest source of emerging news about brain science and health.
These insights suggest potential new roles for musical training including fostering plasticity in the brain, an alternative tool in education, and treating a range of learning disabilities.
Today's new findings show that:

  • Long-term high level musical training has a broader impact than previously thought. Researchers found that musicians have an enhanced ability to integrate sensory information from hearing, touch, and sight (Julie Roy, abstract 550.13, see attached summary).
  • The age at which musical training begins affects brain anatomy as an adult; beginning training before the age of seven has the greatest impact (Yunxin Wang, abstract 765.07 see attached summary).
  • Brain circuits involved in musical improvisation are shaped by systematic training, leading to less reliance on working memory and more extensive connectivity within the brain (Ana Pinho, MS, abstract 122.13, see attached summary).
Some of the brain changes that occur with musical training reflect the automation of task (much as one would recite a multiplication table) and the acquisition of highly specific sensorimotor and cognitive skills required for various aspects of musical expertise.
"Playing a musical instrument is a multisensory and motor experience that creates emotions and motions — from finger tapping to dancing — and engages pleasure and reward systems in the brain. It has the potential to change brain function and structure when done over a long period of time," said press conference moderator Gottfried Schlaug, MD, PhD, of Harvard Medical School/Beth Israel Deaconess Medical Center, an expert on music, neuroimaging and brain plasticity. "As today's findings show, intense musical training generates new processes within the brain, at different stages of life, and with a range of impacts on creativity, cognition, and learning."
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This research was supported by national funding agencies such as the National Institutes of Health, as well as private and philanthropic organizations. Find more information about music, learning, and brain development at BrainFacts.org.


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Exercise during pregnancy gives newborn brain development a head start

reposted from

http://www.eurekalert.org/pub_releases/2013-11/uom-edp110113.php


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PUBLIC RELEASE DATE:
10-Nov-2013
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Contact: William Raillant-Clark
w.raillant-clark@umontreal.ca
514-566-3813
University of Montreal 

Exercise during pregnancy gives newborn brain development a head start

As little as 20 minutes 3 times per week is enough to enhance brain activity

This news release is available in French.
 IMAGE: As little as 20 minutes of moderate exercise three times per week during pregnancy enhances the newborn child's brain development, according to researchers at the University of Montreal and its...
Click here for more information.
MONTREAL and SAN DIEGO, NOVEMBER 10, 2013 – As little as 20 minutes of moderate exercise three times per week during pregnancy enhances the newborn child's brain development, according to researchers at the University of Montreal and its affiliated CHU Sainte-Justine children's hospital. This head-start could have an impact on the child's entire life. "Our research indicates that exercise during pregnancy enhances the newborn child's brain development," explained Professor Dave Ellemberg, who led the study. "While animal studies have shown similar results, this is the first randomized controlled trial in humans to objectively measure the impact of exercise during pregnancy directly on the newborn's brain. We hope these results will guide public health interventions and research on brain plasticity. Most of all, we are optimistic that this will encourage women to change their health habits, given that the simple act of exercising during pregnancy could make a difference for their child's future." Ellemberg and his colleagues Professor Daniel Curnier and PhD candidate Élise Labonté-LeMoyne presented their findings today at the Neuroscience 2013 congress in San Diego.
 IMAGE: As little as 20 minutes of moderate exercise three times per week during pregnancy enhances the newborn child's brain development, according to researchers at the University of Montreal and its...
Click here for more information.
Not so long ago, obstetricians would tell women to take it easy and rest during their pregnancy. Recently, the tides have turned and it is now commonly accepted that inactivity is actually a health concern. "While being sedentary increases the risks of suffering complications during pregnancy, being active can ease post-partum recovery, make pregnancy more comfortable and reduce the risk of obesity in the children," Curier explained. "Given that exercise has been demonstrated to be beneficial for the adult's brain, we hypothesized that it could also be beneficial for the unborn child through the mother's actions."
To verify this, starting at the beginning of their second trimester, women were randomly assigned to an exercise group or a sedentary group. Women in the exercise group had to perform at least 20 minutes of cardiovascular exercise three times per week at a moderate intensity, which should lead to at least a slight shortness of breath. Women in the sedentary group did not exercise. The brain activity of the newborns was assessed between the ages of 8 to 12 days, by means of electroencephalography, which enables the recording of the electrical activity of the brain. "We used 124 soft electrodes placed on the infant's head and waited for the child to fall asleep on his or her mother's lap. We then measured auditory memory by means of the brain's unconscious response to repeated and novel sounds," Labonté-LeMoyne said. "Our results show that the babies born from the mothers who were physically active have a more mature cerebral activation, suggesting that their brains developed more rapidly."
 VIDEO: As little as 20 minutes of moderate exercise three times per week during pregnancy enhances the newborn child's brain development, according to researchers at the University of Montreal and its...
Click here for more information.
The researchers are now in the process of evaluating the children's cognitive, motor and language development at age 1 to verify if these differences are maintained.
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Video and Images
A wide variety of broadcast quality video and print resolution photos are available at no cost to the media. Further images are available. Image consent has been obtained and copies of written release are available on request. Images feature study participants. Credit: Universite de Montreal.


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