Teen years always the most troubling & scary part of our years. Although, this article is a good one, every parent has a different way & experience of bringing up their teen through those difficult years. Some pass with flying colours, while others crash & burn. Every parent has their own story & wisdom to pass on to other parents. What actually works is different for everyone. But then, it never hurts to learn from others, either, or at least keep these thoughts in the back of one's mind.
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Conventional wisdom has long held that our brains are largely developed by puberty. However, research in the past 10-15 years has shown that our brains continue to develop in fundamental ways through the teen years & even into the late 20s & 30s. In fact, Jensen argues in her new book, The Teenage Brain: A Neuroscientist’s Survival Guide to Raising Adolescents & Young Adults, the teenage years comprise one of the brain’s most critical periods for development—likely every bit as crucial as early childhood. “That 7 years in their life is, in a way, as important as their first 7 years of life,” Jensen says. “It is probably one of the most important 7-year [periods] in their entire life.”
Among the most popular misconceptions about brain development is the idea that the most important changes happen in the first 3 years of life. This “myth of three,” has been the source of intense parental anxiety over the fear that “adults are in a race against time to provide stimulation to their infants before their synapses are lost,” writes Paul Howard-Jones, a professor of neuroscience & education at the University of Bristol in the journal Nature. ... Behind the seemingly invincible teenage boy with the booming voice & adult body is a brain that is still incredibly vulnerable to everything from sports-related concussions to mental illness & addiction. New research is uncovering ways in which the activities that so often typify teenage years, such as experimenting with cigarettes & marijuana & alcohol, can lower a teen’s IQ or increase susceptibility to mental illness later on. Chronic stress stemming from family violence, poverty or bullying has also been linked to changes in the teen brain that can raise the risk of mood disorders or learning disabilities.
At the heart of our understanding of brain development are 2 basic concepts: grey matter & white matter. Grey matter consists of neurons, the brain cells that form the building blocks of the brain. White matter, axons, are the connections that form between grey matter, helping to move information from one area of the brain to the next.
While grey-matter growth is indeed almost completely finished by the age of 6, white matter—the wiring between brain cells—continues to develop well into the 20s. In fact, says Jensen, that wiring is only about 80% complete by the age of 18.
Along with new wiring, the brains of teens & young adults are also undergoing a process called myelination, in which those white-matter connections are being coated in a protective fatty material. Myelin acts as a form of insulation, allowing signals to move faster between brain cells, helping to speed the flow of information in the brain. Since both the wiring to the prefrontal cortex, & the insulation, is incomplete, teens often take longer to access their prefrontal cortexes, meaning they have a harder time making accurate judgments & controlling their impulses. The process of myelination continues into the 30s, giving rise to questions about how old someone must be to be considered to have a fully developed “adult” brain.
At the same time that teens’ brains are laying down connections & insulation, puberty has triggered pituitary glands to release hormones that are acting on the limbic system, the brain’s emotional centre. The combination of heightened emotions & an underdeveloped prefrontal cortex explains why teens are often prone to emotional outbursts, says Jensen, & also why they seek out more emotionally charged situations, from sad movies to dangerous driving.
Hormones also appear to have a different effect in teens than they do in adults. The hormone THP, which is released by the body in response to stress, has a calming effect in adults, but actually seems to have the opposite effect in teens, increasing stress. It’s one reason why teens are prone to anxiety & post-traumatic stress disorder. It’s also a good reason, Jensen says, why parents & schools should be sensitive to the problem of bullying.
Along with new wiring, insulation & hormones, teen brains are highly sensitive to the release of dopamine, which plays on the areas of the brain that govern pleasure & helps explain why teens seem to take so many risks.
It’s not that they don’t know any better. In fact, reasoning abilities are largely developed by the age of 15 & studies have shown that teens are as accurate as adults when it comes to understanding if an activity is dangerous. Their brains are just more motivated by the rewards of taking a risk than deterred by its dangers. So even if they know something might be bad—speeding, drinking too much, trying new drugs—they get more pleasure from taking the risks anyway.
Central to our understanding of how teens learn is “pruning”—a period when the brain begins to shed some of the grey-matter cells built up in childhood to make room for the growth of white matter. A long period of grey-matter growth in childhood, followed by vigorous pruning in adolescence, has been linked to higher intelligence, Jensen says.
It’s for this reason that Jay Giedd, an expert in child & adolescent brain imaging at the U.S. National Institute of Mental Health, describes the teen years as a special period of “use it or lose it” for the brain. Brain cells grown in childhood that continue to get used in adolescence form new connections, while those that go unused wither away. It’s also another reason why parents should be anxious about what happens during the teen years—adolescence now appears to be a period that can make or break a child’s intelligence.
A significant consequence of pruning is that IQ, once thought to be fixed for life after childhood, can in fact change dramatically during the teen years.
Learning is a process of repeatedly exposing the brain to something that stimulates the production of dopamine, which strengthens connections in the brain’s reward centre & helps form new memories. Addiction, therefore, is simply a form of “overlearning” by the brain, Jensen says. That process can be controlled by the prefrontal cortex, but since teens are so primed for learning & have less of an ability to access the prefrontal cortex, they’re also more susceptible to addictions.
In an era marked by the ideological tug-of-war over how best to raise our teenagers, what’s a parent to do with this new science of the teenage brain? More rules—an approach exemplified by Yale professor Amy Chua’s 2011 Battle Hymn of the Tiger Mother? Or in intervening too much, do parents risk raising teens whose brains never learn how to become an adult—an approach typified by the backlash against “helicopter parenting” & movements like “slow parenting” & “free-range kids.”
In Teenage Brain, Jensen puts herself squarely in the camp of the highly involved parent. She encourages parents to proof-read their teen’s homework, help them make lists to prioritize their assignments, watch them as they do schoolwork to see if they’re getting distracted & to not be afraid to “sound like a broken record” in reminding teens over & over again about the dangers that could befall them.
She encourages parents to “be your teen’s frontal lobes” & to “try to think for your teenage sons & daughters until their own brains are ready to take over the job.”
Jensen argues that it’s a parent’s job to protect their teens from their own often short-sighted behaviour, while allowing them enough room for “safe failures.”
In the quagmire of parental advice, it’s no surprise that the counterargument to the neuroscience approach to parenting is robust, & passionate. Psychologist Robert Epstein, author of The Case Against Adolescence: Rediscovering the Adult in Every Teen, believes that adolescent rebellion has little to do with brain development & lots to do with how society treats teenagers. He argues scientists have it backward: teens don’t act out because they have immature brains struggling to navigate an adult world, but because they have adult brains railing against a society that treats them like children.
Other research is challenging the notion that teens have a less mature & less connected prefrontal cortex & are therefore inherently more impulsive than adults.
At Temple University, Steinberg has used a car-racing video game to show that when teens are alone they perform as well as adults on tasks involving a tradeoff of risk & reward. But when other teens are in the room watching, adolescents tend to make far riskier decisions. Adults show no difference if other adults watch them, suggesting that teen risk-taking is likely social.
BJ Casey, director of the Sackler Institute for Developmental Psychobiology at Cornell University, found that teens could be less impulsive if they were offered rewards. The greater the reward, the longer teens took to make a decision, suggesting that parents trying to control a hot-headed teen might want to offer rewards for good decisions rather than punishing bad ones.
“You look at the high school dropout rates & the people that fall off the curve not because of academic reasons, but because of peer pressure or drugs,” Jensen says. “It’s so sad because this is a time where you can actually make up for your innate weaknesses. We could get so much more out of our teenagers—& who they become later in life, in many cases—if we took a different approach to this window of time.”
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Conventional wisdom has long held that our brains are largely developed by puberty. However, research in the past 10-15 years has shown that our brains continue to develop in fundamental ways through the teen years & even into the late 20s & 30s. In fact, Jensen argues in her new book, The Teenage Brain: A Neuroscientist’s Survival Guide to Raising Adolescents & Young Adults, the teenage years comprise one of the brain’s most critical periods for development—likely every bit as crucial as early childhood. “That 7 years in their life is, in a way, as important as their first 7 years of life,” Jensen says. “It is probably one of the most important 7-year [periods] in their entire life.”
Among the most popular misconceptions about brain development is the idea that the most important changes happen in the first 3 years of life. This “myth of three,” has been the source of intense parental anxiety over the fear that “adults are in a race against time to provide stimulation to their infants before their synapses are lost,” writes Paul Howard-Jones, a professor of neuroscience & education at the University of Bristol in the journal Nature. ... Behind the seemingly invincible teenage boy with the booming voice & adult body is a brain that is still incredibly vulnerable to everything from sports-related concussions to mental illness & addiction. New research is uncovering ways in which the activities that so often typify teenage years, such as experimenting with cigarettes & marijuana & alcohol, can lower a teen’s IQ or increase susceptibility to mental illness later on. Chronic stress stemming from family violence, poverty or bullying has also been linked to changes in the teen brain that can raise the risk of mood disorders or learning disabilities.
At the heart of our understanding of brain development are 2 basic concepts: grey matter & white matter. Grey matter consists of neurons, the brain cells that form the building blocks of the brain. White matter, axons, are the connections that form between grey matter, helping to move information from one area of the brain to the next.
While grey-matter growth is indeed almost completely finished by the age of 6, white matter—the wiring between brain cells—continues to develop well into the 20s. In fact, says Jensen, that wiring is only about 80% complete by the age of 18.
Along with new wiring, the brains of teens & young adults are also undergoing a process called myelination, in which those white-matter connections are being coated in a protective fatty material. Myelin acts as a form of insulation, allowing signals to move faster between brain cells, helping to speed the flow of information in the brain. Since both the wiring to the prefrontal cortex, & the insulation, is incomplete, teens often take longer to access their prefrontal cortexes, meaning they have a harder time making accurate judgments & controlling their impulses. The process of myelination continues into the 30s, giving rise to questions about how old someone must be to be considered to have a fully developed “adult” brain.
At the same time that teens’ brains are laying down connections & insulation, puberty has triggered pituitary glands to release hormones that are acting on the limbic system, the brain’s emotional centre. The combination of heightened emotions & an underdeveloped prefrontal cortex explains why teens are often prone to emotional outbursts, says Jensen, & also why they seek out more emotionally charged situations, from sad movies to dangerous driving.
Hormones also appear to have a different effect in teens than they do in adults. The hormone THP, which is released by the body in response to stress, has a calming effect in adults, but actually seems to have the opposite effect in teens, increasing stress. It’s one reason why teens are prone to anxiety & post-traumatic stress disorder. It’s also a good reason, Jensen says, why parents & schools should be sensitive to the problem of bullying.
Along with new wiring, insulation & hormones, teen brains are highly sensitive to the release of dopamine, which plays on the areas of the brain that govern pleasure & helps explain why teens seem to take so many risks.
It’s not that they don’t know any better. In fact, reasoning abilities are largely developed by the age of 15 & studies have shown that teens are as accurate as adults when it comes to understanding if an activity is dangerous. Their brains are just more motivated by the rewards of taking a risk than deterred by its dangers. So even if they know something might be bad—speeding, drinking too much, trying new drugs—they get more pleasure from taking the risks anyway.
Central to our understanding of how teens learn is “pruning”—a period when the brain begins to shed some of the grey-matter cells built up in childhood to make room for the growth of white matter. A long period of grey-matter growth in childhood, followed by vigorous pruning in adolescence, has been linked to higher intelligence, Jensen says.
It’s for this reason that Jay Giedd, an expert in child & adolescent brain imaging at the U.S. National Institute of Mental Health, describes the teen years as a special period of “use it or lose it” for the brain. Brain cells grown in childhood that continue to get used in adolescence form new connections, while those that go unused wither away. It’s also another reason why parents should be anxious about what happens during the teen years—adolescence now appears to be a period that can make or break a child’s intelligence.
A significant consequence of pruning is that IQ, once thought to be fixed for life after childhood, can in fact change dramatically during the teen years.
Learning is a process of repeatedly exposing the brain to something that stimulates the production of dopamine, which strengthens connections in the brain’s reward centre & helps form new memories. Addiction, therefore, is simply a form of “overlearning” by the brain, Jensen says. That process can be controlled by the prefrontal cortex, but since teens are so primed for learning & have less of an ability to access the prefrontal cortex, they’re also more susceptible to addictions.
In an era marked by the ideological tug-of-war over how best to raise our teenagers, what’s a parent to do with this new science of the teenage brain? More rules—an approach exemplified by Yale professor Amy Chua’s 2011 Battle Hymn of the Tiger Mother? Or in intervening too much, do parents risk raising teens whose brains never learn how to become an adult—an approach typified by the backlash against “helicopter parenting” & movements like “slow parenting” & “free-range kids.”
In Teenage Brain, Jensen puts herself squarely in the camp of the highly involved parent. She encourages parents to proof-read their teen’s homework, help them make lists to prioritize their assignments, watch them as they do schoolwork to see if they’re getting distracted & to not be afraid to “sound like a broken record” in reminding teens over & over again about the dangers that could befall them.
She encourages parents to “be your teen’s frontal lobes” & to “try to think for your teenage sons & daughters until their own brains are ready to take over the job.”
Jensen argues that it’s a parent’s job to protect their teens from their own often short-sighted behaviour, while allowing them enough room for “safe failures.”
In the quagmire of parental advice, it’s no surprise that the counterargument to the neuroscience approach to parenting is robust, & passionate. Psychologist Robert Epstein, author of The Case Against Adolescence: Rediscovering the Adult in Every Teen, believes that adolescent rebellion has little to do with brain development & lots to do with how society treats teenagers. He argues scientists have it backward: teens don’t act out because they have immature brains struggling to navigate an adult world, but because they have adult brains railing against a society that treats them like children.
Other research is challenging the notion that teens have a less mature & less connected prefrontal cortex & are therefore inherently more impulsive than adults.
At Temple University, Steinberg has used a car-racing video game to show that when teens are alone they perform as well as adults on tasks involving a tradeoff of risk & reward. But when other teens are in the room watching, adolescents tend to make far riskier decisions. Adults show no difference if other adults watch them, suggesting that teen risk-taking is likely social.
BJ Casey, director of the Sackler Institute for Developmental Psychobiology at Cornell University, found that teens could be less impulsive if they were offered rewards. The greater the reward, the longer teens took to make a decision, suggesting that parents trying to control a hot-headed teen might want to offer rewards for good decisions rather than punishing bad ones.
“You look at the high school dropout rates & the people that fall off the curve not because of academic reasons, but because of peer pressure or drugs,” Jensen says. “It’s so sad because this is a time where you can actually make up for your innate weaknesses. We could get so much more out of our teenagers—& who they become later in life, in many cases—if we took a different approach to this window of time.”
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