The benefits of a bilingual brain - Mia Nacamulli

16,060,025 views ・ 2015-06-23

TED-Ed


Please double-click on the English subtitles below to play the video.

Translator: Mehmet Sıddık Dilek Reviewer: ronya bewran
00:06
¿Hablas español? Parlez-vous français? 你会说中文吗?
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hablas espanol?parlez-vous français?
Go hûn bêjin ''sî'' û ''oui'' xuyaye hûn bi îngîlîzî temaşe dikin.
00:12
If you answered, "sí," "oui," or "会" and you're watching this in English,
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Belkî bexte we heye hûn ji wek geleka bi duzimanî bin
00:18
chances are you belong to the world's bilingual and multilingual majority.
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Li nik bi hesanî gerandina dine û bê binnivîs temaşekirina filma,
00:23
And besides having an easier time traveling
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00:25
or watching movies without subtitles,
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duzimanî û pirzimanî tê wateya ku mêjiye te
00:27
knowing two or more languages means that your brain
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00:29
may actually look and work differently than those of your monolingual friends.
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ji miroven yekziman cudatir xuya dike û dişixule.
00:34
So what does it really mean to know a language?
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Aya bi rastî wateya zanîna zimanekî çi ye?
00:38
Language ability is typically measured in two active parts, speaking and writing,
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Zîrekiya ziman bi du hêle aktîf, peyivandin-nivîsandin
00:43
and two passive parts, listening and reading.
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û bi du hêle pasîf guhdarkirin-xwendin tê pivan
00:46
While a balanced bilingual has near equal
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Harmonîya di navbera du zimane de
zîrekîya di çûn û hatina di navbera her du zimane de ye.
00:49
abilities across the board in two languages,
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Zanîn û bikaranîna zimanen gelek duzimaniya
00:52
most bilinguals around the world know and use their languages
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00:55
in varying proportions.
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ji hev cuda ye.
00:57
And depending on their situation and how they acquired each language,
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Giredayî rewşa wa û çawa hînî her zimanî bûna.
01:01
they can be classified into three general types.
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Di be sê cur e.
Wek mînak em li Gabriella meze kin.
01:04
For example, let's take Gabriella,
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01:07
whose family immigrates to the US from Peru when she's two-years old.
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Hê du salî malbata wê ji Peru koçî amerika kir.
Wek duziamniya pêkhatî
01:12
As a compound bilingual,
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01:13
Gabriella develops two linguistic codes simultaneously,
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Gabriella bi hev re bi du zimana mezin bû,
bi têne konseptekê re,
01:18
with a single set of concepts,
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hînî spanyolî û îngilîzî bû,
01:20
learning both English and Spanish
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û dinyaya dora xwe nas kir.
01:22
as she begins to process the world around her.
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Birayê we deh salî dibe ku duzimaniya wî bi koordine be,
01:25
Her teenage brother, on the other hand, might be a coordinate bilingual,
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bi du konseptî şixulî.
01:29
working with two sets of concepts,
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01:31
learning English in school,
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Li dibistanê hînî îngilizî bû
di heman demê de li malê bi spanyolî peyivî.
01:33
while continuing to speak Spanish at home and with friends.
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01:36
Finally, Gabriella's parents are likely to be subordinate bilinguals
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Di dawiye de dê û bavên gabriella duzimaniya wan behtir giredayî ye.
Lewra wan zimanê duyemîn
01:41
who learn a secondary language
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bi reya zimanê zikmakî hîn bûn.
01:43
by filtering it through their primary language.
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Heye ev her sê cure duzimanî karin terî wan bikin
01:46
Because all types of bilingual people can become fully proficient in a language
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ji xeynî devoka wan.
01:50
regardless of accent or pronunciation,
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Belkî yekî ji rêzê fem neke cudahiye.
01:52
the difference may not be apparent to a casual observer.
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01:55
But recent advances in brain imaging technology
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Xebatên zanistî li ser mêjî,
01:58
have given neurolinguists a glimpse
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hinek nîşan dan xuya kirin
02:00
into how specific aspects of language learning affect the bilingual brain.
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ku çawa duzimanî bandore li ser mêjî dike.
Baş tê zanîn ku nîvê mêjî ye çepê serdest e
02:05
It's well known that the brain's left hemisphere is more dominant
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di mantik û analîtîke de.
02:09
and analytical in logical processes,
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Nîvê rastê jî bo hest û civakî serdesttir e.
02:11
while the right hemisphere is more active in emotional and social ones,
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Ev veqetandin ne tam misoger ê.
02:16
though this is a matter of degree, not an absolute split.
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Wexta ku mirov mezin dibin
02:20
The fact that language involves both types of functions
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02:22
while lateralization develops gradually with age,
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bi wext re alîbûn jî peş dikeve.
02:25
has lead to the critical period hypothesis.
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Ji vir hîpotezêk girîng derdikeve.
02:28
According to this theory,
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Li gor vê teorîye
02:30
children learn languages more easily
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zarok pir hesantir hînî ziman dibin.
02:32
because the plasticity of their developing brains
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Lewra guherîbûn di mêjîye wan de
dihele ku her du alî mêjîyê xwe bo ziman bi kar bînin.
02:35
lets them use both hemispheres in language acquisition,
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02:38
while in most adults, language is lateralized to one hemisphere,
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Halbûkî mêjîye mezina,alîyek têne bo ziman dişixule,
02:42
usually the left.
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bi giştî alîye çep e.
02:44
If this is true, learning a language in childhood
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Ku ev rast be,hînbûna ziman di zarokîtiye de
02:47
may give you a more holistic grasp of its social and emotional contexts.
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hest û cîvakî jî dide mirov.
02:52
Conversely, recent research showed
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Xebatên dawî nîşan dikin
02:54
that people who learned a second language in adulthood
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mirovên kû mezinahîya xwe de hînî zimanê duyemîn bûyî,
02:57
exhibit less emotional bias and a more rational approach
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hindiktir hestîyarî û behtir mantiqî nezîkî
mijarê di zimanê xwe ye duyemîn dibin,
03:01
when confronting problems in the second language
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03:03
than in their native one.
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li gorî zimanê zikmakî.
03:05
But regardless of when you acquire additional languages,
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Ji bilî ku hûn kengî hînî zimanê duyemîn bûne
03:08
being multilingual gives your brain some remarkable advantages.
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pirzimanî guhertinên girîng çê dike di mêjî de.
Hinek ji wan eşkere ne,
03:12
Some of these are even visible,
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03:13
such as higher density of the grey matter
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mînak behtir alava grî
03:16
that contains most of your brain's neurons and synapses,
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ku tê de behtîrîn noron û sînapsê mêjî hene
û mêjî behtir aktîf e, dema ku zimanê duyemîn dişuxile.
03:19
and more activity in certain regions when engaging a second language.
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Tiştekî din bo mirovên duzimanî jî,
03:23
The heightened workout a bilingual brain receives throughout its life
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03:26
can also help delay the onset of diseases, like Alzheimer's and dementia
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nexweşiye wek alzheimer û demans 5 sal
03:31
by as much as five years.
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dereng dibînin.
Fikra ku hişmendî ji duzimaniya sûd digire
03:33
The idea of major cognitive benefits to bilingualism
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03:35
may seem intuitive now,
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behtir texmîn e.
03:37
but it would have surprised earlier experts.
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Lê li gor pîsorê kevin ne wisa bû.
Berî 1960'î dihat gotin duzimanî peşkeftina zarokan
03:40
Before the 1960s, bilingualism was considered a handicap
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hedika dike û nebaş e.
03:44
that slowed a child's development
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03:45
by forcing them to spend too much energy distinguishing between languages,
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Çunkî zarok dijwarî dikişînin di navbera du zimanan de.
03:50
a view based largely on flawed studies.
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ew fikir jî texmîn bû.
Lê xebatên dawî nîşan dikin
03:54
And while a more recent study did show
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di nav zarokên duzimanî de hinek xeletî behtir in,
03:56
that reaction times and errors increase for some bilingual students
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03:59
in cross-language tests,
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di azmûnê zimanî de.
Lê da xuya kirin pedivîbûna çûn û hatina nav zimanan de
04:01
it also showed that the effort and attention needed
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04:03
to switch between languages triggered more activity in,
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04:06
and potentially strengthened, the dorsolateral prefrontal cortex.
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vê herema mêjî xurttir dike.
Ev herema mêjî karê wek çareserkirina pirsgireka,
04:11
This is the part of the brain that plays a large role
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04:14
in executive function, problem solving, switching between tasks,
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guhertina peywiran
û wexta bal vêdanê de zanyarîye din qut dike.
04:18
and focusing while filtering out irrelevant information.
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04:22
So, while bilingualism may not necessarily make you smarter,
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Belkî duzimanî mejî zîrektir neke,
04:26
it does make your brain more healthy, complex and actively engaged,
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lê tenduristîye,aktîfbûna mejî zede dike.
04:30
and even if you didn't have the good fortune
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Zarokîya xwe de hûn ne pirzimanî bin jî
04:33
of learning a second language as a child,
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04:35
it's never too late to do yourself a favor
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tu carî ne derenge ku hînî zimanekî din bibin.
04:37
and make the linguistic leap from, "Hello,"
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Hûn he jî dikarin hînî ''hello,hola,bonjour'' bibin.
04:40
to, "Hola," "Bonjour" or "你好’s"
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04:43
because when it comes to our brains a little exercise can go a long way.
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Çunkî mijar mêjî be, hindik xebat gelek rê dimeşe.
[werger: Xulamê Mîr]
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