2008年12月28日 星期日

Storybooks On Paper Better For Children Than Reading Fiction On Computer Screen

http://www.sciencedaily.com/releases/2008/12/081219073049.htm

Storybooks On Paper Better For Children Than Reading Fiction On
Computer Screen, According to Expert

ScienceDaily (Dec. 22, 2008) — Clicking and scrolling interrupt our
attentional focus. Turning and touching the pages instead of clicking
on the screen influence our ability for experience and attention. The
physical manipulations we have to do with a computer, not related to
the reading itself, disturb our mental appreciation, says associate
professor Anne Mangen at the Center for Reading Research at the
University of Stavanger in Norway. She has investigated the pros and
cons of new reading devices.

Mangen maintains that reading on a screen generates a new form of
mental orientation. The reader loses both the completeness and
constituent parts of the physical appearance of the reading material.
The physical substance of a book offers tranquility. The text does not
move on the page like it does on a screen.

"Several experiments in cognitive psychology have shown how a change
of physical surroundings has a potentially negative affect on memory.
We should include this in our evaluation of digital teaching aids. The
technology provides for a number of dynamic, mobile and ephemeral
forms of learning, but we know little about how such mobility and
transience influence the effect of teaching. Learning requires time
and mental exertion and the new media do not provide for that," Mangen
believes.

"We experience to day a one-sided admiration for the potentials in the
technology. ICT is now introduced in kindergarten without much
empirical research on how it influences children's learning and
development. The whole field is characterized by an easy acceptance
and a less subtle view of the technology," the researcher says.

Would you warn against the use of digital teaching material?

"Critical perspectives on new technologies are often brushed aside as
a result of moral panic and doomsday prophecies. I will not warn
against it, but I think there is generally little reflection around
digital teaching material. What we need, is a more nuanced view on the
potentials and limitations of all technologies – even of the book.
Very often important discussions about technology and learning have a
tendency to reduce a complex field to a question about being for or
against," Mangen explains.

The development of digital media leads to a need for more
sophisticated concepts of reading and writing and a new understanding
of these activities.

"Many people say that children read less and not so well as earlier.
With which technology do they read less? What types of text do they
read less well? What conceptions of reading are we talking about,"
Anne Mangen asks.

Even if children and young people do not read as many novels in book
form any more, one may still argue that they actually read more than
before. Most of what they do on a computer or on their cell phones, is
exactly reading and writing.

"Swedish researchers believe we understand more and better when
reading on paper than when we read the same text on a screen. We avoid
navigating and the small things we don't think about, but which
subconsciously takes attention away from the reading. Also texts on a
screen are often not adapted to the screen format. The most important
difference is when the text becomes digital. Then it loses its
physical dimension, which is special to the book, and the reader loses
his feeling of totality."

Mangen has mainly been looking at hypertext stories. These stories
exploit the multimedia possibilities of a computer and use both
hypertext, video, sound, pictures and text. They are constructed in
such a way that clicking one's way around them comes close to a
literary computer game.

As a researcher, Mangen is interested in the physical aspect of
reading and applies theories from psychology and phenomenology linked
to the relationships between motor functions and attention in order to
highlight the difference between reading a novel and a hypertext
story.

"The digital hypertext technology and its use of multimedia are not
open to the experience of a fictional universe where the experience
consists of creating your own mental images. The reader gets
distracted by the opportunities for doing something else," Mangen
says.

2008年10月8日 星期三

Good article to share - Learning From Mistakes Only Works After Age 12, Study Suggests

Hi parents,

Be positive to your kids under 12, because they cannot learn from mistakes.

Benny Lam
===================================================================
Learning From Mistakes Only Works After Age 12, Study Suggests

http://www.sciencedaily.com/releases/2008/09/080925104309.htm

ScienceDaily (Sep. 27, 2008) — Eight-year-old children have a
radically different learning strategy from twelve-year-olds and
adults. Eight-year-olds learn primarily from positive feedback ('Well
done!'), whereas negative feedback ('Got it wrong this time') scarcely
causes any alarm bells to ring. Twelve-year-olds are better able to
process negative feedback, and use it to learn from their mistakes.
Adults do the same, but more efficiently.

Brain areas for cognitive control

The switch in learning strategy has been demonstrated in behavioural
research, which shows that eight-year-olds respond disproportionately
inaccurately to negative feedback. But the switch can also be seen in
the brain, as developmental psychologist Dr Eveline Crone and her
colleagues from the Leiden Brain and Cognition Lab discovered using
fMRI research. The difference can be observed particularly in the
areas of the brain responsible for cognitive control. These areas are
located in the cerebral cortex.

Opposite case

In children of eight and nine, these areas of the brain react strongly
to positive feedback and scarcely respond at all to negative feedback.
But in children of 12 and 13, and also in adults, the opposite is the
case. Their 'control centres' in the brain are more strongly
activated by negative feedback and much less by positive feedback.

Three-way division

Crone and her colleagues used fMRI research to compare the brains of
three different age groups: children of eight to nine years, children
of eleven to twelve years, and adults aged between 18 and 25 years.
This three-way division had never been made before; the comparison is
generally made between children and adults.

Unexpected

Crone herself was surprised at the outcome: 'We had expected that the
brains of eight-year-olds would function in exactly the same way as
the brains of twelve-year-olds, but maybe not quite so well. Children
learn the whole time, so this new knowledge can have major
consequences for people wanting to teach children: how can you best
relay instructions to eight- and twelve-year-olds?' '

Ticks and crosses

The researchers gave children of both age groups and adults aged 18 to
25 a computer task while they lay in the MRI scanner. The task
required them to discover rules. If they did this correctly, a tick
appeared on the screen, otherwise a cross appeared. MRI scans showed
which parts of the brain were activated.

Learning in a different way

These surprising results set Crone thinking. 'You start to think less
in terms of 'good' and 'not so good'. Children of eight may well be
able to learn extremely efficiently, only they do it in a different
way.'

Learning from mistakes is complicated

She is able to place her fMRI results within the existing knowledge
about child development. 'From the literature, it appears that young
children respond better to reward than to punishment.' She can also
imagine how this comes about: 'The information that you have not done
something well is more complicated than the information that you have
done something well. Learning from mistakes is more complex than
carrying on in the same way as before. You have to ask yourself what
precisely went wrong and how it was possible.'

Is it experience?

Is that difference between eight- and twelve-year-olds the result of
experience, or does it have to do with the way the brain develops? As
yet, nobody has the answer. 'This kind of brain research has only
been possible for the last ten years or so,' says Crone, 'and there
are a lot more questions which have to be answered. But it is probably
a combination of the brain maturing and experience.'

Brain area for positive feedback

There is also an area of the brain that responds strongly to positive
feedback: the basal ganglia, just outside the cerebral cortex. The
activity of this area of the brain does not change. It remains active
in all age groups: in adults, but also in children, both
eight-year-olds and twelve-year-olds.

Journal reference:

Anna C. K. van Duijvenvoorde, Kiki Zanolie, Serge A. R. B. Rombouts,
Maartje E. J. Raijmakers, and Eveline A. Crone. Evaluating the
Negative or Valuing the Positive? Neural Mechanisms Supporting
Feedback-Based Learning across Development. The Journal of
Neuroscience, 17 September 2008 [link]


Adapted from materials provided by Leiden University.

2008年8月27日 星期三

The best education system in the World, Finland.

Parents, please read.

The best education system in the World, Finland.
如果要學芬蘭,不要說錢,就是「老師不評核」、「學生不穿校服」、「老師可以染紅髮」這幾樣,已經把香港的人嚇昏。(

http://www.xanga.com/fongyun/671175713/reflection-from-finland.html


Benny Lam
27 Aug 2008

2008年7月21日 星期一

Children who had increased amounts of omega-3 fatty acids performed better in school

俾小朋友多吃三文�, ��都好D.

Benny Lam
==============================================
http://www.sciencedaily.com/releases/2008/07/080709161922.htm

Scientists Learn How Food Affects The Brain: Omega 3 Especially Important
ScienceDaily (July 11, 2008) ― In addition to helping protect us from
heart disease and cancer, a balanced diet and regular exercise can
also protect the brain and ward off mental disorders.


"Food is like a pharmaceutical compound that affects the brain," said
Fernando Gómez-Pinilla, a UCLA professor of neurosurgery and
physiological science who has spent years studying the effects of
food, exercise and sleep on the brain. "Diet, exercise and sleep have
the potential to alter our brain health and mental function. This
raises the exciting possibility that changes in diet are a viable
strategy for enhancing cognitive abilities, protecting the brain from
damage and counteracting the effects of aging."

Gómez-Pinilla analyzed more than 160 studies about food's affect on
the brain; the results of his analysis appear in the journal Nature
Reviews Neuroscience.

Omega-3 fatty acids -- found in salmon, walnuts and kiwi fruit --
provide many benefits, including improving learning and memory and
helping to fight against such mental disorders as depression and mood
disorders, schizophrenia, and dementia, said Gómez-Pinilla, a member
of UCLA's Brain Research Institute and Brain Injury Research Center.

Synapses in the brain connect neurons and provide critical functions;
much learning and memory occurs at the synapses, Gómez-Pinilla said.

"Omega-3 fatty acids support synaptic plasticity and seem to
positively affect the expression of several molecules related to
learning and memory that are found on synapses," Gómez-Pinilla said.
"Omega-3 fatty acids are essential for normal brain function.

"Dietary deficiency of omega-3 fatty acids in humans has been
associated with increased risk of several mental disorders, including
attention-deficit disorder, dyslexia, dementia, depression, bipolar
disorder and schizophrenia," he said. "A deficiency of omega-3 fatty
acids in rodents results in impaired learning and memory."

Children who had increased amounts of omega-3 fatty acids performed
better in school, in reading and in spelling and had fewer behavioral
problems, he said.

Preliminary results from a study in England show that school
performance improved among a group of students receiving omega-3 fatty
acids. In an Australian study, 396 children between the ages 6 and 12
who were given a drink with omega-3 fatty acids and other nutrients
(iron, zinc, folic acid and vitamins A, B6, B12 and C) showed higher
scores on tests measuring verbal intelligence and learning and memory
after six months and one year than a control group of students who did
not receive the nutritional drink. This study was also conducted with
394 children in Indonesia. The results showed higher test scores for
boys and girls in Australia, but only for girls in Indonesia.

Getting omega-3 fatty acids from food rather than from capsule
supplements can be more beneficial, providing additional nutrients,
Gómez-Pinilla said.

Scientists are learning which omega-3 fatty acids seem to be
especially important. One is docosahexaenoic acid, or DHA, which is
abundant in salmon. DHA, which reduces oxidative stress and enhances
synaptic plasticity and learning and memory, is the most abundant
omega-3 fatty acid in cell membranes in the brain.

"The brain and the body are deficient in the machinery to make DHA; it
has to come through our diet," said Gómez-Pinilla, who was born and
raised in salmon-rich Chile and eats salmon three times a week, along
with a balanced diet. "Omega-3 fatty acids are essential."

A healthy diet and exercise can also reduce the effect of brain injury
and lead to a better recovery, he said.

Recent research also supports the hypothesis that health can be passed
down through generations, and a number of innovative studies point to
the possibility that the effects of diet on mental health can be
transmitted across generations, Gómez-Pinilla said.

A long-term study that included more than 100 years of birth, death,
health and genealogical records for 300 Swedish families in an
isolated village showed that an individual's risk for diabetes and
early death increased if his or her paternal grandparents grew up in
times of food abundance rather than food shortage.

"Evidence indicates that what you eat can affect your grandchildren's
brain molecules and synapses," Gómez-Pinilla said. "We are trying to
find the molecular basis to explain this."

Controlled meal-skipping or intermittent caloric restriction might
provide health benefits, he said.

Excess calories can reduce the flexibility of synapses and increase
the vulnerability of cells to damage by causing the formation of free
radicals. Moderate caloric restriction could protect the brain by
reducing oxidative damage to cellular proteins, lipids and nucleic
acids, Gómez-Pinilla said.

The brain is highly susceptible to oxidative damage. Blueberries have
been shown to have a strong antioxidant capacity, he noted.

In contrast to the healthy effects of diets that are rich in omega-3
fatty acids, diets high in trans fats and saturated fats adversely
affect cognition, studies indicate.

Junk food and fast food negatively affect the brain's synapses, said
Gómez-Pinilla, who eats fast food less often since conducting this
research. Brain synapses and several molecules related to learning and
memory are adversely affected by unhealthy diets, he said.

Emerging research indicates that the effects of diet on the brain,
combined with the effects of exercise and a good night's sleep, can
strengthen synapses and provide other cognitive benefits, he added.

In Okinawa, an island in Japan where people frequently eat fish and
exercise, the lifespan is one of the world's longest, and the
population has a very low rate of mental disorders, Gómez-Pinilla
noted.

Folic acid is found in various foods, including spinach, orange juice
and yeast. Adequate levels of folic acid are essential for brain
function, and folate deficiency can lead to neurological disorders
such as depression and cognitive impairment. Folate supplementation,
either by itself or in conjunction with other B vitamins, has been
shown to be effective in preventing cognitive decline and dementia
during aging and enhancing the effects of antidepressants. The results
of a recent randomized clinical trial indicate that a three-year folic
acid supplementation can help reduce the age-related decline in
cognitive function.

In patients with major depression and schizophrenia, levels of a
signaling molecule known as brain-derived neurotrophic factor, or
BDNF, are reduced. Antidepressants elevate BDNF levels, and most
treatments for depression and schizophrenia stimulate BDNF. Here, too,
omega-3 fatty acids are beneficial, as is the curry spice curcumin,
which has been shown to reduce memory deficits in animal models of
Alzheimer's disease and brain trauma. BDNF is most abundant in the
hippocampus and the hypothalamus -- brain areas associated with
cognitive and metabolic regulation.

The high consumption of curcumin in India may contribute to the low
prevalence of Alzheimer's disease on the subcontinent.

In humans, a mutation in a BDNF receptor has been linked to obesity
and impairments in learning and memory.

"BDNF is reduced in the hippocampus, in various cortical areas and in
the serum of patients with schizophrenia," Gómez-Pinilla said. "BDNF
levels are reduced in the plasma of patients with major depression."

Smaller food portions with the appropriate nutrients seem to be
beneficial for the brain's molecules, such as BDNF, he said.

Gómez-Pinilla showed in 1995 that exercise can have an effect on the
brain by elevating levels of BDNF.

He noted that while some people have extremely good genes, most of us
are not so lucky and need a balanced diet, regular exercise and a good
night's sleep.

The research was funded by the National Institutes of Health's
National Institute of Neurological Disorders and Stroke.


--------------------------------------------------------------------------------

Journal reference:

Gómez-Pinilla et al. Brain foods: the effects of nutrients on brain
function. Nature Reviews Neuroscience, 2008; 9 (7): 568 DOI:
10.1038/nrn2421
Adapted from materials provided by University of California - Los
Angeles, via EurekAlert!, a service of AAAS.

2008年6月5日 星期四

值得三思是否俾小朋友太早接觸互聯網

各位家長, 推介文章
值得三思是否俾小朋友太早接觸互聯網

青田親子閱讀會季訊 - 互聯網影響分析力
http://www.greenfieldhk.com/newsletter.pdf

2008年3月17日 星期一

推介 "KidsHealth Express"

推介 "KidsHealth Express", a free weekly "KidsHealth Express" of
www.KidsHealth.org.

我 subscribed 了幾個月,覺得真的值得向各位推介。 It's free.

Benny Lam
17 March 2008

========================================================
www.KidsHealth.org

To subscribe weekly KidsHealth Express Email service, please visit
this page to sign up
http://KidsHealth.org/ExpressEmail

Since 1995, KidsHealth has been the web's most-visited site about
children's health - from before birth through adolescence. Created by
physicians and other health experts at the Nemours Center for
Children's Health Media, KidsHealth receives over 100 million visits
each year. Visit www.KidsHealth.org to check out the latest features.

-----原始郵件-----

來自: KidsHealth <ExpressEmail@kidshealth.org>
主旨: Your Weekly KidsHealth Update!
日期: 星期五 2008年3月14日 3:05
大小: 3K
給: benny.lam@alumni.ust.hk

Being active through sports and exercise is important for all of us.
Nobody wants to be sidelined by an injury. Before you head off to the
field or the gym, read about some key steps that can help prevent
mishaps.


PARENTS

Preventing Children's Sports Injuries
Participation in sports can teach kids to stretch their limits and
learn sportsmanship and discipline. But sports also carry the
potential for injury. Find out how to help kids avoid getting hurt.
http://www.kidshealth.org/parent/fitness/safety/sports_safety.html

Food Allergies
Food allergies can cause serious and even deadly reactions in kids, so
it's important to know how to feed a child with food allergies and to
prevent reactions.
http://www.kidshealth.org/parent/food/special/food_allergies.html

Homework Help
When parents are actively interested in their children's homework,
kids learn to value their achievements. Read this article to learn
important tips for helping with homework.
http://www.kidshealth.org/parent/positive/learning/homework.html

Raising a Fit Kid
You know the importance of good nutrition and exercise, but do you
know how to raise a healthy and active child? Get some practical
advice and tips here.
http://www.kidshealth.org/parent/centers/nutrition_center.html

News - CPSC Cautions Parents About Crib Safety
The U.S. Consumer Product Safety Commission (CPSC) reports that 97
babies and young children under age 5 died from 2000 through 2004 from
crib-related deaths, many of which probably were preventable.
http://www.kidshealth.org/research/crib_safety.html

News - Older Kids Riding as Passengers Dying Far Too Often
Researchers looked at information about more than 45,000 crashes
involving 8- to 17-year-old passengers. What they found: 9,807 of kids
in that age range were killed, with 12- to 16-year-old passengers more
likely to die in crashes than younger kids.
http://www.kidshealth.org/research/crashes.html


KIDS

Five Ways to Avoid Sports Injuries
Sports injuries often can be prevented. Find out how in this article for kids.
http://www.kidshealth.org/kid/watch/out/sport_safety.html

Are Video Games Bad for Me?
You love your video games, but how much is too much? Find out in this
article for kids.
http://www.kidshealth.org/kid/talk/qa/video_gaming.html

What's a Gene?
Why does one kid have green eyes while another kid's eyes are brown?
It's all in the genes! This article has all you need to know about how
genes work, what happens when there are problems with genes, and more.
http://www.kidshealth.org/kid/talk/qa/what_is_gene.html

How the Body Works
The human body is an amazing machine. Learn more about it through
movies, quizzes, articles, and more.
http://www.kidshealth.org/kid/htbw/index.html

To recommend the weekly KidsHealth Express Email service to friends,
please forward this email to them or ask them to visit this page to
sign up:
http://KidsHealth.org/ExpressEmail

We hope you enjoy it!

Neil Izenberg, MD
Editor-in-Chief and Founder, KidsHealth
Chief Executive, Nemours Center for Children's Health Media
Nemours Foundation

Since 1995, KidsHealth has been the web's most-visited site about
children's health - from before birth through adolescence. Created by
physicians and other health experts at the Nemours Center for
Children's Health Media, KidsHealth receives over 100 million visits
each year. Visit www.KidsHealth.org to check out the latest features.

2008年3月13日 星期四

演藝學院開放日將於今年3月16日(星期日)早上10:00至下午5:00舉行

APA open day coming Sunday. Consider to go with your kids.

http://www.hkapa.edu/asp/general/general_news_details.asp?lang=tch&mode=gui&newsid=504

演藝開放日 3月16日近百場演出示範,免費供市民參與!
演藝公關部 日期: 2008/2/21


一年一度的演藝學院開放日將於今年3月16日(星期日)早上10:00至下午5:00舉行。一如既往,演藝五所學院的師生將傾盡全力,為市民送上多場精湛的免費表演與示範。參觀者更有機會踏足平日閒人免進的後台禁地,揭開幕後製作的神秘面紗。

今年開放日的節目包羅萬有,包括舞蹈參觀技巧課和公開課,在專業導師教授下,一嘗現代舞、爵士舞、芭蕾舞、踢躂舞、中國舞等不同的舞姿。戲劇基礎訓練示範如音樂劇演唱技巧、舞台形體、演技等,體驗演員在舞台背後付出的努力;電影電視學院的專業攝影、燈光與視訊技術操作示範,展現幕前萬千變化背後的神秘面紗。置身於演藝學院,觀眾又豈能錯過音樂學院特備的中西樂器、樂團、聲樂、和熱鬧非常的非洲鼓表演?其他精采節目,還有舞台佈景及服裝設計展覽,以及闖進舞台及製作藝術學院的後台重地,參觀繪景工場、,以及欣賞中國粵劇行當介紹、化妝示範和演出等。

為方便有志報讀演藝學院人士查詢全日制、兼讀、初級生及碩士課程的入學申請手續,教務處和進修學院將於大堂設置詢問處。五所學院(舞蹈、戲劇、電影電視、音樂、舞台及製作藝術)及粵劇課程,亦於開放日提供課程資料查詢服務。

2008年全日制課程入學招生由即日起至4月9日。如欲了解更多精彩節目的資料,請參閱開放日節目單張或按此下載節目表。費用全免,歡迎各界人士參加。