Kimberly Noble: How does income affect childhood brain development?
金柏莉‧諾柏: 家庭收入如何影響幼兒的大腦發育?
Kimberly Noble, MD, PhD, studies how socioeconomic inequality relates to children's cognitive and brain development. Full bio
Double-click the English transcript below to play the video.
are findings from a study
children and adolescents.
孩童與青少年的大腦。
who were recruited
around the United States,
of all of their brains.
得到的平均圖像。
是在你的左邊,
is on your left
is on your right.
we were very interested in
of the cerebral cortex,
on the outer surface of the brain
of the cognitive heavy lifting.
by other scientists has suggested
其他科學家的研究顯示,
with higher intelligence.
with the cortical surface area
surface of the brain.
都表示較高家庭收入的兒童
is a point where higher family income
cortical surface area in that spot.
shown here in yellow,
was particularly pronounced.
a certain set of cognitive skills:
like vocabulary and reading
to avoid distraction
are most likely to struggle with.
of language and impulse control
和自我控制能力的測試中表現較差。
I'd like to highlight about this study.
and children's brain structure
和家庭收入之間的關聯,
in family income
greater differences in brain structure
此差異對大腦結構的影響更大。
earning, say, 150,000 dollars a year
but probably not game-changing,
對於一年只賺兩萬美金的家庭來說,
20,000 dollars a year
in their day-to-day lives.
帶來顯著的差異。
I'd like to highlight
and children's brain structure
大腦結構之間的關係,
on their race or ethnicity.
from one child to the next,
of children from higher-income homes
來自較高收入家庭的孩子
from lower-income homes
school classroom,
who are taller than some boys.
is certainly a risk factor
的確是一個風險因子,
child's family income
任何一位孩子的家庭收入,
會是怎樣的。
would look like.
for a moment, two children.
born into poverty in America;
into more fortunate circumstances.
absolutely no differences
are ready to start kindergarten,
that are, on average, 60 percent lower
孩子要低 60%。
to drop out of high school,
很可能是五倍之高,
a college degree.
are 35 years old,
her entire childhood living in poverty,
都是在貧窮中渡過,
more likely to be poor herself.
就有七十五倍之高。
I find most exciting about the human brain
最讓我感到興奮的一點,
known as neuroplasticity,
in children's brain structure
to a life of low achievement.
each year, educating our children.
要花數十億美元。
teachers and parents
from disadvantaged backgrounds
with a host of different experiences
伴隨著許多不同的經歷,
in turn may work together
and ultimately help kids learn.
並最終幫助孩子們學習。
從何處可介入提供協助呢?
can we step in and provide help?
本身的層級來進行干預——
at the level of learning itself --
school-based initiatives.
to focus on the kinds of skills
are most likely to struggle with?
based in scientific evidence
of excellent interventions
or self-regulation
development and their test scores.
認知能力和測驗分數。
doing this work would tell you,
介入做法的科學家所言,
evidence-based education.
有時成本也很高。
in child development emerge early --
在兒童發育早期出現——
of formal schooling --
all of our policy efforts
children's experiences?
are associated with growing up in poverty
to promote brain development
我們特別關注幾種類型的體驗,
on a few types of experiences
their learning outcomes.
the home language environment,
聽到的單詞數量,
that the number of words kids hear
they're engaged in every day
more spoken words
3,000 萬個口語單詞,
advantaged backgrounds.
more back-and-forth,
來回應答會話的孩子,
in parts of the brain
大腦部位產生較大的表面積。
for language and reading skills.
of conversations they hear
than the sheer number of words they hear.
單詞數量更重要一些。
not just to talk a lot,
with their children.
that we'll promote brain development
and reading skills.
of scientists are testing
還會有許多不同的經歷,
with lots of different experiences
conversations kids are having.
of high-quality interventions
children's experience,
school-based initiatives,
或是勞動密集型,
for scientists to swoop in
in order for their child to succeed.
才能讓孩子成功。
young children in poverty
their families more money?
with a team of economists,
changes in children's brain development.
兒童大腦發育的改變。
我們開始招募 1000 名
living below the federal poverty line
in a number of American hospitals.
an unconditional monthly cash gift
無條件的每月現金禮物,
of their children's lives,
however they like.
mothers are being randomized,
to receive a nominal monthly cash gift
several hundred dollars each month,
會讓他們的日常生活產生變化,
in their day-to-day lives,
增加 20% ~ 25%。
their monthly income by 20 to 25 percent.
past questions
with child development
whether reducing poverty causes changes
and brain development
most malleable to experience.
from this study for several years,
will have a bit more cash each month
及其媽媽獲得分派
that a cost-effective way
若要協助貧窮的幼兒,
那該怎麼辦?
will inform debates about social services
將為社會服務辯論提供
of families with young children.
or even the most important factor
甚至是最重要的因素,
brain development,
changes how children's brains develop
policy changes,
at a brighter future.
ABOUT THE SPEAKER
Kimberly Noble - Neuroscientist, pediatricianKimberly Noble, MD, PhD, studies how socioeconomic inequality relates to children's cognitive and brain development.
Why you should listen
Trained as a neuroscientist and board-certified pediatrician, Dr. Kimberly Noble has examined disparities in development and health across infancy, childhood and adolescence. She is currently an Associate Professor of Neuroscience and Education at Teachers College, Columbia University, where she directs the Neurocognition, Early Experience and Development (NEED) Lab. She received her undergraduate, graduate and medical degrees at the University of Pennsylvania and was the recipient of the Association for Psychological Science Janet Taylor Spence Award for Transformative Early Career Contributions.
In collaboration with a multidisciplinary team of scientists from around the United States, Noble is co-directing the Baby's First Years study, the first clinical trial of poverty reduction to assess the causal impact of income on children's cognitive, emotional and brain development in the first three years of life. Her work has received worldwide attention in the popular press, including the Washington Post, The Economist, Newsweek, The Guardian, Le Monde and NPR. A full list of her publications can be found here.
Kimberly Noble | Speaker | TED.com