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What is the smartest age? 00:07
Perhaps a day of friendly competition will lead us to the answer. 00:09
Tomorrow’s the annual Brain Clash— 00:14
ten teams of two competing in a decathlon of mental challenges, 00:17
trivia competitions, and puzzles. 00:21
I’ve been training all year. 00:24
I’ll need to pick the smartest, most capable teammate. 00:25
I’ve narrowed down the roster. 00:29
First we have Gabriela. 00:31
She may only be 8, but don’t underestimate her! 00:33
She’s fluent in two languages and is the ultimate outside-the-box thinker. 00:36
Then there’s Ama. 00:41
She can recite 100 digits of pi, designs satellites for a living, 00:42
and bakes a perfect soufflé. 00:46
Or I could go with Mr. Taylor. 00:49
He’s the best chess player in the neighborhood, 00:51
not to mention he’s competed in over 20 Brain Clashes 00:53
and is a five-time champion! 00:56
I’m not sure who to pick! Who’s the smartest? 00:59
Which of these teammates should Amir choose for tomorrow's contest and why? 01:05
Of course, it depends. 01:09
While intelligence is often associated with things like IQ tests, 01:11
these assessments fail to capture the scope and depth 01:15
of a person’s varied abilities. 01:18
So instead, we’ll break down the idea of “smart” into categories 01:20
like creativity, memory, and learning 01:25
and explore when the brain’s best at each of them. 01:27
Let's start at the very beginning. 01:30
In the first few years of life, 01:32
your brain undergoes incredible rapid growth, called synaptogenesis, 01:33
where more than 1 million new neural connections are formed every second. 01:37
As the brain develops, it goes through a pruning process. 01:42
Based on your experience and environment, 01:45
used connections are strengthened and unused connections are removed. 01:47
Frequently used neuronal pathways are myelinated, 01:53
wrapped in a layer of insulation, allowing information to travel faster. 01:56
This creates a more efficient, fine-tuned brain. 02:01
But this brain remodeling happens within and between brain regions 02:04
at different times, 02:08
allowing different skills to flourish at different ages. 02:09
For example, in childhood, brain regions involved in language learning 02:13
develop quickly, 02:17
which is why many children can learn and master multiple languages. 02:18
Yet the prefrontal cortex, 02:22
a brain region responsible for cognitive control and inhibition, 02:23
is slower to develop. 02:27
As a result, some young children may struggle with strategic games, 02:29
such as chess or checkers, 02:32
which require constant concentration, planning, and abstract thought. 02:34
At the same time, children tend to be more flexible, exploration-based learners. 02:38
They often use more creative approaches when finding solutions to riddles 02:43
and are, on average, less afraid to make mistakes. 02:47
But adults have their own unique set of abilities. 02:51
Adults benefit from a well-developed prefrontal cortex, 02:54
allowing them to better execute skills that require learning, focus, and memory, 02:58
making them quick and efficient puzzle solvers or crossword masters. 03:02
Late in adulthood, these same skills may decline 03:06
as the brain’s memory center, known as the hippocampus, shrinks. 03:09
But there’s a reason for the phrase “older and wiser.” 03:13
After a lifetime of learning, 03:16
older adults have more knowledge to recall and utilize, 03:18
making them excellent trivia partners. 03:22
Other factors that Amir should consider are his own strengths. 03:24
As an adolescent, the prefrontal cortical regions of your brain are more developed 03:28
than in childhood. 03:32
This allows you to better navigate logic and math puzzles. 03:33
Simultaneously, deep inside the brain, 03:37
regions that are important in motivation and reward are developing even faster, 03:40
driving teenagers like Amir to be curious and adventurous learners. 03:44
In many ways, you can think of the teenager as a jack-of-all-trades, 03:49
with brains wired to seek out new experiences and learn quickly. 03:53
You’re at a dynamic stage, 03:57
where the choices you make and the skills you focus on 03:59
can actually guide the development of your brain. 04:03
So, what’s the smartest age? 04:06
There’s no single answer. 04:09
It’s 8, 16, 25, 65, and everything in between; 04:11
our brains have adapted to prioritize different skills at various ages 04:16
to meet that stage of life’s challenges and demands. 04:20
So no matter who Amir picks, having an age-diverse team is a good strategy. 04:24

– English Lyrics

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Lyrics & Translation

[English]
What is the smartest age?
Perhaps a day of friendly competition will lead us to the answer.
Tomorrow’s the annual Brain Clash—
ten teams of two competing in a decathlon of mental challenges,
trivia competitions, and puzzles.
I’ve been training all year.
I’ll need to pick the smartest, most capable teammate.
I’ve narrowed down the roster.
First we have Gabriela.
She may only be 8, but don’t underestimate her!
She’s fluent in two languages and is the ultimate outside-the-box thinker.
Then there’s Ama.
She can recite 100 digits of pi, designs satellites for a living,
and bakes a perfect soufflé.
Or I could go with Mr. Taylor.
He’s the best chess player in the neighborhood,
not to mention he’s competed in over 20 Brain Clashes
and is a five-time champion!
I’m not sure who to pick! Who’s the smartest?
Which of these teammates should Amir choose for tomorrow's contest and why?
Of course, it depends.
While intelligence is often associated with things like IQ tests,
these assessments fail to capture the scope and depth
of a person’s varied abilities.
So instead, we’ll break down the idea of “smart” into categories
like creativity, memory, and learning
and explore when the brain’s best at each of them.
Let's start at the very beginning.
In the first few years of life,
your brain undergoes incredible rapid growth, called synaptogenesis,
where more than 1 million new neural connections are formed every second.
As the brain develops, it goes through a pruning process.
Based on your experience and environment,
used connections are strengthened and unused connections are removed.
Frequently used neuronal pathways are myelinated,
wrapped in a layer of insulation, allowing information to travel faster.
This creates a more efficient, fine-tuned brain.
But this brain remodeling happens within and between brain regions
at different times,
allowing different skills to flourish at different ages.
For example, in childhood, brain regions involved in language learning
develop quickly,
which is why many children can learn and master multiple languages.
Yet the prefrontal cortex,
a brain region responsible for cognitive control and inhibition,
is slower to develop.
As a result, some young children may struggle with strategic games,
such as chess or checkers,
which require constant concentration, planning, and abstract thought.
At the same time, children tend to be more flexible, exploration-based learners.
They often use more creative approaches when finding solutions to riddles
and are, on average, less afraid to make mistakes.
But adults have their own unique set of abilities.
Adults benefit from a well-developed prefrontal cortex,
allowing them to better execute skills that require learning, focus, and memory,
making them quick and efficient puzzle solvers or crossword masters.
Late in adulthood, these same skills may decline
as the brain’s memory center, known as the hippocampus, shrinks.
But there’s a reason for the phrase “older and wiser.”
After a lifetime of learning,
older adults have more knowledge to recall and utilize,
making them excellent trivia partners.
Other factors that Amir should consider are his own strengths.
As an adolescent, the prefrontal cortical regions of your brain are more developed
than in childhood.
This allows you to better navigate logic and math puzzles.
Simultaneously, deep inside the brain,
regions that are important in motivation and reward are developing even faster,
driving teenagers like Amir to be curious and adventurous learners.
In many ways, you can think of the teenager as a jack-of-all-trades,
with brains wired to seek out new experiences and learn quickly.
You’re at a dynamic stage,
where the choices you make and the skills you focus on
can actually guide the development of your brain.
So, what’s the smartest age?
There’s no single answer.
It’s 8, 16, 25, 65, and everything in between;
our brains have adapted to prioritize different skills at various ages
to meet that stage of life’s challenges and demands.
So no matter who Amir picks, having an age-diverse team is a good strategy.

Key Vocabulary

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Vocabulary Meanings

brain

/breɪn/

A1
  • noun
  • - the organ inside the skull that controls thought, memory and behaviour

intelligence

/ɪnˈtɛlɪdʒəns/

B2
  • noun
  • - the ability to acquire and apply knowledge and skills

competition

/ˌkɒmpəˈtɪʃn/

B1
  • noun
  • - a contest in which participants try to win against each other

memory

/ˈmɛməri/

A2
  • noun
  • - the faculty by which the brain stores and recalls information

learning

/ˈlɜːnɪŋ/

B1
  • noun
  • - the process of acquiring knowledge or skills through study, experience or teaching

creativity

/ˌkriːeɪˈtɪvɪti/

B2
  • noun
  • - the ability to produce original ideas or things

strategy

/ˈstrætədʒi/

B2
  • noun
  • - a plan of action designed to achieve a long‑term goal

neural

/ˈnjʊərəl/

C1
  • adjective
  • - relating to nerves or the nervous system

synaptogenesis

/ˌsɪnəptoʊˈdʒɛnɪsɪs/

C2
  • noun
  • - the formation of synapses between neurons during brain development

pruning

/ˈpruːnɪŋ/

C1
  • noun
  • - the process of eliminating unused neural connections to improve efficiency
  • verb
  • - to cut away or remove unneeded neural pathways

myelinated

/maɪˈɛlɪneɪtɪd/

C2
  • adjective
  • - covered with a fatty sheath that speeds up nerve signal transmission

prefrontal

/priːˈfrʌntl/

C2
  • adjective
  • - relating to the front part of the frontal lobes of the brain responsible for decision‑making and self‑control

cortex

/ˈkɔːrtɛks/

C1
  • noun
  • - the outer layer of the brain that processes information

hippocampus

/ˌhɪpəˈkæmpəs/

C2
  • noun
  • - a region of the brain involved in memory formation and spatial navigation

abstraction

/ˌæbstrˈækʃən/

C2
  • noun
  • - the process of extracting essential ideas from specific examples

motivation

/ˌmoʊtɪˈveɪʃən/

B2
  • noun
  • - the drive that initiates, guides, and maintains behavior toward a goal

reward

/rɪˈwɔːrd/

B2
  • noun
  • - something given in recognition of service, effort or achievement
  • verb
  • - to give someone something as a reward

adaptation

/ˌædæpˈteɪʃən/

B2
  • noun
  • - the process of adjusting to new conditions or environments

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