Excellent. I loved Steinberg's book on parenting, and this is a must-read as well.
Tons of parts I liked from the book:
p. 19 The Reminiscence Bump
We recall more mundane events from adolescence, whereas unusual, emotion-laden momentous and self-defining events are recalled regardless of when they occur.
p.70 Phases in the Development of the Adolescent Brain
Phase One: Starting the Engines. Around the time of puberty, the limbic system becomes more easily aroused. During this time teenagers become more emotional (experiencing and displaying higher “highs” and lower “lows”), more sensitive to the opinions and evaluations of others (especially peers), and more determined to have exciting and intense experiences—something psychologists refer to as “sensation seeking.” In most families, bickering and squabbling become commonplace between parents and children in early adolescence. Because this aspect of brain maturation is driven mainly by the hormonal changes of puberty, the start and end of this phase will be determined by the ages at which the teenager starts and finishes maturing physically.
Phase Two: Developing a Better Breaking System. During this segment, the prefrontal cortex slowly becomes better organized, a consequence of synaptic pruning and myelination. As information begins to flow more rapidly across longer distances in the brain, advanced thinking abilities—so-called “executive functions”—strengthen, which improves decision making, problem solving, and planning ahead. During middle adolescence—say, from fourteen to seventeen—parents often find that their children become much more reasonable and easier to discuss things with. A lot of the drama that had characterized the early adolescent years fades.
Phase Three: Putting a Skilled Driver Behind the Wheel. In the third phase, which is not finished until the early twenties, the brain becomes more interconnected. This is especially true with respect to the connections between the prefrontal cortex and the limbic system. This increase in connectivity results in mature and more dependable self-regulation. During the late teens and early twenties, adolescents get better at controlling their impulses, thinking about the long-term consequences of their decisions, and resisting peer pressure. Their rational thought processes are less easily disrupted by fatigue, stress, or emotional arousal.
p. 73 A small structure inside the limbic system (called the nucleus accumbens) is the most active part of the brain for the experience of pleasure—it’s the center of the reward center—and it actually gets bigger as we grow from childhood into adolescence, but, alas, smaller as we age from adolescence to adulthood.
That is why nothing—whether it’s being with your friends, having sex, licking and ice-cream cone, zipping along in a convertible on a warm summer evening, hearing your favorite music—will ever feel as good as it did when you were a teenager.
p. 92 Intellectually, adolescents can understand consequences, but emotionally they are less sensitive to them than are other age groups. One of my favorite illustrations of this comes from a brain-imaging study in which adolescents and adults were presented with a series of statements, and asked to push a button to indicate whether the activity was a good idea or a bad idea. Some of the activities were obviously good (“eat a salad”); others were obviously bad (“light your hair on fire”). As you’d expect, everyone, regardless of age, indicated that the good activities were fine and the bad ones weren’t. But adolescents took a little bit longer before making their decisions, even when the suggestions were as crazy as “swimming with sharks” or “drinking a can of Drano.”
p. 92 The Peer Effect
The mere presence of friends makes teenagers take more chances.
p. 95 It hurts to be rejected at any age, but it’s actually more painful during adolescence than at any other time. (In fact, the pain of social rejection so closely resembles physical pain in neurobiological terms that taking acetaminophen, the active ingredient in Tylenol, actually can help alleviate it.)
p. 117 Only about 25% of school performance is accounted for by intelligence.
One of the reasons tests of intelligence, talent, or ability don’t predict much in school, work, or life is that they don’t measure characteristics like determination, persistence, or “grit.” By determination, I mean more than the willingness or ability to work hard—although that is surely a part of it. People who are determined are also dedicated enough to maintain their focus and persevere even when the going gets tough. Determination involves conscientiousness, stamina, and sustained commitment. It requires delay of gratification—investing time and energy in an activity that may not have an immediate payoff, putting work in now for a reward that won’t come until much later; and that may not come at all. Surprisingly, there is no correlation between determination and intelligence, ability, or talent.
p.121 Self-regulation is at the heart of determination. The ability to control our emotions, thoughts, and behaviors is what enables us to stay focused, especially when things get difficult, unpleasant, or tedious.We rely on self-regulation to stop our minds from wandering, to force ourselves to push a little more even though we’re tired, and to keep still when we’d rather be moving around. Self-regulation is what separates the determined—and the successful—from the insecure, the distractible, and the easily discouraged.
Self-regulation and the traits it influences, like determination, comprise one of the strongest predictors of many different types of success: achievement in school, success at work, more satisfying friendships and romantic relationships, and better physical and mental health. People who score high on measures of self-regulation complete more years of school, earn more money and have higher-status jobs, and are more likely to stay happily married. People who score low on these measures are more likely to get into trouble with the law and to suffer from a range of medical and psychological problems, including heart disease, obesity, depression, anxiety, and substance abuse.
p. 122 Intelligence, as measured on most standardized tests of ability, is highly determined by genes. From about age six on, scores on tests of intelligence are remarkably stable.
Intelligence isn’t as determined by one’s genes as is a physical trait like height, but it is more strongly determined by genetics than most other psychological traits.
Because we can measure levels of self-regulation so early in life with the marshmallow test, and because those early levels are so predictive of future success, it’s tempting to conclude that problems in self-regulation must have strong genetic underpinnings that are engraved into the brain’s circuitry. Not so. Like all psychological traits, self-control has a substantial genetic component, but the influence of genes on self-control is only about half that of intelligence.
On average, children who are relatively more impulsive when they are young are also relatively more impulsive when they are older, but the correlation between early and later impulsivity is surprisingly modest. This means that it is harder to predict adolescent impulsivity from measures of childhood impulsivity than it is to predict adolescent intelligence from childhood intelligence, in part because changes in self-control during adolescence are more influenced by the environment.
Changing the environment of an infant can have a profound effect on many aspects of the baby’s development, including his intelligence. Unfortunately, taking an intellectually dull adolescent and moving him into a stimulating environment will do little, if anything, to alter how smart he is. But moving an adolescent with poor impulse control into an environment that encourages better self-regulation can make a real difference. Studies show that even the most impulsive, aggressive juvenile delinquents can be helped to develop better self-regulation.
p. 125 How Parents Can Make a Difference
Be Warm:
You cannot love your child too much
Be physically affectionate
Try to understand and respond to your child’s emotional needs
Provide a safe haven
Be involved in your child’s life
Be Firm:
Make your expectations clear
Explain your rules and decisions
Be consistent
Be fair
Avoid harsh punishment
Be Supportive:
Set your child up to succeed
Praise your child’s accomplishments, but focus on the effort, not the outcome
Don’t be overly intrusive
Relinquish control gradually, as your child gets better at managing her own life
Help your child think through decisions rather than making them for him
Protect when you must, but permit when you can
p. 148 General competencies: being able to work effectively with others, being able to develop and carry out long-term strategic plans, knowing how to acquire and use new information, being able to think flexibly and creatively, and, of course, self-regulation.
p. 151 KIPP focuses on zest, grit, self-control, optimism, curiosity, gratitude, and social intelligence.
P. 156 How to Train Self-Regulation
--Training Executive Functioning
--Mindfulness meditation
--Aerobic exercise
--Mindful physical activity
--Teaching self-regulation skills and strategies (SEL programs-social and emotional learning)
--Sustained, Scaffolded Stimulation
p. 165 Entering Adolescence at a Disadvantage
The neurobiological advantage enjoyed by the affluent starts long before adolescence. Children from poor families are much more likely to have cognitive deficits than their peers from better-off backgrounds. Young people who grow up in poor households consistently score lower on tests of intelligence and executive functioning. These socioeconomic differences are apparent very early in life—as early as two years of age. And being born into economic disadvantage has long-lasting effects on a wide range of outcomes—not only educational achievement, but mental and physical health, antisocial behavior, substance use and abuse, and, of course, earnings.
Many factors contribute to intellectual differences between children from different socioeconomic strata. One of the most notable factors is also one that’s unpopular to acknowledge—genetics. This must be so, given the high heritability of intelligence, and of executive functions in particular; strong and well-documented genetic influences on brain anatomy; and what social scientists call “assortative mating”—the tendency for people who bear children together to have certain characteristics in common, including socioeconomic background and intelligence.
Genes clearly contribute to socioeconomic differences in intelligence, but environmental influences actually may be more important in explaining the relative intellectual deficiencies of children from poorer families. These environmental factors include both extreme trauma, such as violence inside and outside the home, and the chronic distress associated with poverty. Stress appears to have particularly toxic effects on brain regions like the prefrontal cortex that are crucial to advanced cognitive abilities and self-control. The good news is that, because the environment plays such a strong role in the development of this part of the brain, targeted interventions can help reduce inequality. We can narrow the divide between the haves and have-nots.
p. 166 Brain imaging has shown how socioeconomic differences in executive functioning are reflected in brain anatomy. Recent studies have revealed structural differences in children’s prefrontal regions that are linked to their parents’ level of education. One aspect of brain development that is most disrupted by early stress involves the circuits that connect the prefrontal cortex with the limbic system. Early disruption of these circuits will tend to impair people’s later ability to rein in sensation seeking and control their emotions. So it’s hardly surprising that people from poor backgrounds are more likely to have all sorts of problems associated with impulse control, like substance abuse, crime, and aggression.
p. 172 Parents from lower-class backgrounds rear their children in ways that are less likely to lead to strong self-regulation. They’re more likely to use harsh discipline and physical punishment. They tend to be more erratic and inconsistent, veering from excessive control to excessive permissiveness. They generally are less warm and less gentle. This is not the case for all lower-class parents, of course, nor is it true that all middle-class parents are models of temperance, kindness, and understanding. But these general differences between poor and affluent parents have been found in hundreds of studies.
Socioeconomic differences in parenting arise from many causes. The circumstances under which poorer parents raise their children are more stressful and taxing. The communities in which they live tend to be more chaotic, dangerous, and unpredictable, which tends to make parents more controlling and less patient. They’re more likely to be parenting on their own, which often makes them more permissive. They have fewer resources that might allow them to take breaks from parenting when they’re burnt out, which makes it harder to stand firm when their children are demanding. And because there is a good chance they themselves were raised in similar circumstances, they’re less likely to have good self-control, which is essential to good parenting.
Another reason that lower-SES parents are less likely to be calm and gentle is that, like all parents, their behavior is shaped by what their children do. Kids with weaker self-regulation are more impulsive and disobedient. Interacting with an impulsive and disobedient child makes parents themselves behave similarly—because their child flies off the handle easily, so do they. A “coercive cycle” is set in motion, in which harsh and inconsistent parenting produces problematic behavior in the child, which in turn evokes more harsh and inconsistent parenting. This cycle is more likely to occur in households where parents are stressed out.
p. 177 In order to fully appreciate how the delayed transition into adulthood has disproportionately benefited the haves and hindered the have-nots, we must consider the different forms of “capital” and how they contribute to success in school, work, and life.
In addition to financial capital, adolescents growing up in more affluent families are more likely to accumulate human capital (the skills and abilities necessary for success at school and work), cultural capital (the cultural knowledge, manners of speech and dress, and ways of behaving that signal membership in the higher social classes), and social capital (connections with others who are able to provide assistance). In case you had any doubts, social science has confirmed that it’s easier to succeed in life if you’re wealthy, educated, sophisticated, and well connected.
Those who grow up in affluence have still another advantage that has become increasingly important: “psychological capital.” This term refers to the noncognitive skills that are now recognized as just as crucial to success as the skills that are ordinarily included in the category of human capital—it includes things like social intelligence, vitality, enthusiasm, and, of course, self-regulation. We don’t deliberately foster these things in school (although, as I pointed out in the previous chapter, we could), but being able to skillfully interact with others, light up a room, make people feel good about themselves, and exercise self-restraint are just as important, if not more so, than intelligence or talent.
Various aspects of psychological capital contribute to well-being in different ways, but self-regulation is probably the most critical to success in school and at work, especially in a world in which the ability to delay gratification has become so crucial. Plenty of people succeed without being cheery, extroverted, or vivacious, but few people do so without being determined, hardworking, and persevering.
I believe there is still another type of capital essential for success. For lack of a better label, let’s call it “neurobiological capital.” This is the advantage that accrues from having a protracted period of brain plasticity in an environment that is appropriately stimulating. The privileged have an advantage in neurobiological capital in early life, because they are likely to be exposed to environmental stimulation during infancy, the first period of heightened brain plasticity. But they also accumulate neurobiological capital by extending adolescence, because delaying the transition to adulthood keeps the window of plasticity open for a longer period of time while people can continue to expose themselves to the kinds of experience that improve the brain. The affluent also have the resources they need to buy access to stimulating environments during this time.
As we’ve seen, prefrontal systems become stronger through scaffolded stimulation—challenges that requires us to use them in ways that are slightly more demanding than we’re accustomed to. These are precisely the sort of challenges offered by the colleges and universities young people form privileged families attend. The advantage of staying in school longer is not just in the additional skills, credentials, connections, and capacities that are accumulated through this experience—although these advantages in human, cultural, social, and psychological capital are certainly considerable. It also comes from the opportunity to accumulate neurobiological capital.
p. 207 Some Recommendations
For Parents:
-Lessen the chance that your child will go through puberty early. Don’t let them be obese, limit screen time, avoid BPA (plastics 3 & 7), phthalates, and parabens.
-Practice authoritative parenting. Be warm, be firm, and be supportive.
-Encourage activities that are likely to contribute to self-regulation. Mindfulness meditation, yoga, tae kwon do or tai chi; or at least sufficient aerobic exercise and rest.
-Be aware of the emotional and social circumstances that can undermine your child’s judgment. Stressed, fatigued, or in groups with other teenagers.
-Reduce your child’s exposure to stress. Make your home feel as gentle and calm as possible. Be kind, physically affectionate, and relaxed. Strive to keep outside sources of stress from impinging on your home environment. Ensure children have time after school and on weekends when they can just unwind and do nothing in particular.
-Don’t worry about whether your twenty-something child is taking too long to grow up. The longer one can stay immersed in a world characterized by new and stimulating experiences, the longer one can benefit from the positive effects such experiences have on the brain.