Key Insights

The Problem: Grown-Splaining

Most of us, when things aren't going well with a young person in our lives, fall into a trap that David Yeager calls "grown-splaining." The logic is seductive and almost invisible: I am an adult who has survived. I have made decisions. My reasoning has proven trustworthy. Therefore, the right thing to do is to export the contents of my thoughts into the teenager's head — because they, by virtue of being young, lack that hard-won wisdom.

The problem is what this logic implies. To grown-splain is to signal, however subtly, that the young person cannot think for themselves. And once teenagers feel disrespected — once they sense that the adult in front of them has already decided they don't have a valid perspective — they close their ears. The adult is now frustrated and frightened, the teen has shut down, and a bad outcome that feels impossible to control is exactly David's definition of a bad stressor.

Yeager also points to a subtler version of this trap: the secondary appraisal. When a child misbehaves in public, American parents often report getting angry not primarily about the behaviour itself, but about what that behaviour signals to watching strangers — that they are a bad parent. The real stressor is not the child; it's the worry about being judged. Recognising this layer, Yeager argues, is one reason why a shift in mindset can feel more achievable than changing the underlying situation — because we can't always fix what's stressing us, but we can often change our interpretation of what it means that we're stressed.

The Neuroscience: A Gap That Wasn't There Before

Richie Davidson offers a crucial piece of context. The onset of puberty is occurring significantly earlier than it did a century ago — this is well-documented across western countries, and in some subgroups in the United States, puberty is now beginning before the age of ten. The regulatory circuits of the brain, however, are on a completely different maturation timeline. The prefrontal regions that govern the regulation of emotion and thought don't fully mature until the mid-twenties.

Davidson speaks from personal experience. His son went through a deeply challenging adolescence — and despite Davidson's decades of neuroscience expertise, he says that his intellectual knowledge was "useless" in the thick of it. His son is now happily married with two children of his own, a school psychologist, and what Davidson calls "a poster child for plasticity." The prefrontal cortex catches up, eventually — but that gap in the middle is real, and understanding it doesn't automatically make navigating it easier.

Three Mindsets: Protector, Enforcer, Mentor

Most parents, Yeager says, default to one of two responses when a child is in distress. The first is the protector mindset: shielding the child from further distress by removing the expectation altogether — calling the school, keeping them home, smoothing things over. The second is the enforcer mindset: "suck it up, stop whining" — demanding without supporting, telling without listening, blaming and shaming.

Neither approach actually serves the young person. The protector removes the opportunity to learn. The enforcer damages trust and closes off the relationship. What he describes instead is the mentor mindset: holding high expectations while also genuinely supporting the young person's capacity to meet them. The goal, as he puts it, is not to ensure that your child knows how to behave only when you are there to tell them. The goal is to build a coach inside their head.

Cortland draws a striking parallel worth sitting with. The protector and enforcer, he notes, are also how most of us relate to our own inner experience — suppressing what we feel or avoiding it entirely. The mentor mindset, it turns out, is also an inner posture: meeting our own discomfort with curiosity rather than judgment or avoidance. How we parent and how we relate to ourselves may be more mutually reinforcing than they first appear.

Ask, Don't Tell

The parenting coach whose work Yeager found most striking — Lorena Seidel, a mindset and emotional intelligence coach — had one thing that stood out above everything else: she almost always asks questions rather than issuing instructions. When kids are in conflict, the temptation is to resolve it as quickly as possible. But if a child never has to figure out how to resolve conflict on their own, they never build that capacity. Every time an adult short-circuits the process, the opportunity is lost.

He sees this same principle in the best teachers and coaches he has studied. A great teacher doesn't just mark the wrong answer and explain the correction — they find ways to have students discover the error themselves. The NBA's best shooting coach doesn't list what players are doing wrong. He watches a shot and asks: "How did that feel?" He is building an internal voice in the player — one that keeps coaching even when he isn't in the room. The Socratic quality is the mechanism by which people internalise what they've learned.

Reappraising Stress: Butterflies as a Signal

When his daughter Scarlet got in the car before her cello audition — butterflies in her stomach, sweaty palms, racing heart — Yeager was about to tell her something he'd been researching: that the physiological arousal of stress can be reappraised. The butterflies are not a sign that you're going to fail. They are a sign that you've chosen to do something ambitious and important, something not everyone would attempt. And the racing heart? Your body mobilising oxygenated blood to your brain and muscles so you can perform at the level of your preparation.

Before he could say any of this, Scarlet said it herself. She remembered him using exactly that framing two years earlier, when she was water-skiing and nervous, and it had worked — she'd had the time of her life. The idea had stuck not because a professor told her something, but because it had been functional in the moment. It paid off. And so she carried it forward.

Richie Davidson adds an important amendment: the reappraisal isn't purely cognitive. It lives in the body too. This is also why, in his intervention research, Yeager always tries to give participants a chance to use what they've just learned immediately — not days later, but right now, while it's still live. They remember it because it worked for them, not because someone told them it was true.

Mindsets Need a Context to Land In

One of the most counterintuitive findings in Yeager's large-scale work: the same intervention can work brilliantly in one classroom and do almost nothing in another. In a national study of growth mindset interventions, the outcomes varied enormously depending on what happened in the classroom afterward. The seed for this insight came from two years Yeager spent watching Uri Treisman — a MacArthur Fellow whose calculus programme at UT Austin produced 40% of all Black Americans with a PhD in mathematics by the early 1990s — trying to understand what a true mentor mindset looks like in practice.

In classrooms where teachers responded positively to student resilience — treating mistakes as information — the mindset intervention took hold. In classrooms where teachers responded with frustration, it was effectively switched off. The teacher's response functioned like a contextual gate. Yeager estimates that roughly half of classrooms in America fall into the second category.

Changing the Adult, Not Just the Kid

This realisation shifted the entire direction of Yeager's work. If a child's newly formed mindset can be neutralised by the adults around them, then intervening only on the child is incomplete. The logical target is the adult — the parent, the teacher, the coach — who creates or destroys the conditions in which a young person can act on better ways of thinking.

His FUSE programme (Fellowship Using the Science of Engagement) is a teacher professional development programme built around the mentor mindset practices he observed in the top 5% of instructors: asking more than telling, allowing students to revise and resubmit work, establishing classroom culture explicitly on the first day. The question: can these practices be taught to ordinary teachers — and does it amplify what the students have learned?

All of Yeager's best interventions share one thing: they come from a place of genuine respect for the young person. They treat them as someone whose perspective matters, whose experience is valid, whose ability to think deserves to be honoured. That posture — consistent, unhurried, genuinely curious — may be the most important thing any adult in a young person's life can practise. Not as a technique, but as a way of being.