1KHO 896: School And Regular Life Should Be A Lot More Like Summer Camp | Dr. David Yeager,

**Ginny Yurich** (0:00)
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My name is Ginny Yurich, the founder of 1000 Hours Outside. I have read a fantastic book that is so interesting because it is talking about this developmental stage that is a lot longer than you might expect. The book is called 10 to 25, the science of motivating young people, a groundbreaking approach to leading the next generation and making your own life easier author. Dr. David Yeager is here and also you have a master class. I've actually never talked to anybody who has a master class and we love master class. Welcome.

**David Yeager** (1:36)
Yeah, thanks for having me.

**Ginny Yurich** (1:38)
So you just walked in here from teaching a class. So you're talking about a lot of these concepts with students who are in this age range 10 to 25?

**David Yeager** (1:48)
Yeah.

**Ginny Yurich** (1:48)
So do they have interesting perspective, feedback on it from their perspective of being right in this range?

**David Yeager** (1:56)
Yeah, it's funny. So just a little context, I'm a university professor or professional nerd as I tell my kids.
I teach a large 150 person class called Using Behavioral Science to Change the World. It's all about using psychology, social psychology, etc. to solve problems. One of the problems we focus on is stress and well-being. So we just did that today, actually.
What's funny is, the book's called 10 to 25, because that's everything between the onset of puberty, which is around 10, to 25, which is when people tend to take on an adult-like role. That's how scientists tend to think of adolescence as biological onset, cultural offset. I teach the students this content, and you'd think they'd be like, oh, this is about me. But I try not to teach it that way. They mainly are thinking about their siblings or their cousins, and they're like, oh, those kids, they're really immature. I'm an adult and I'm grown up. And so it's funny, there is a little bit of self-knowledge and self-awareness that always happens, but it's very indirect, because they mainly think of it in terms of influencing other people.

**Ginny Yurich** (3:08)
Okay, so when you use the phrase cultural offset, does that mean that for certain periods of history, the range would have been smaller?

**David Yeager** (3:18)
Yeah, so like, if you think about the global economy now, right, it requires ever more technical education for the kinds of stable jobs that allow access to upward mobility in the middle class. And there's been a hollowing out of the middle class, right? So it's not just that non-college-educated jobs are underpaid, but there are lots of, there are far fewer jobs even among college-educated people. And so because of that, then there's a push for economic survival to get more and more education and, and or more and more training to start a job where you're training for several years, even if it's not formal education.
And so people tend to not get fully independent roles in our society, where people look at them as an authority until their mid to late 20s. And that was not true for most of human history, right? It wasn't even true for like, my grandpa started high school, no, started college at like 16 or something. And then he was in charge of B29s at 19, you know, World War II. Right. So that stuff does change. Timing of puberty, onset of adolescence is bi, that's a biological reality that the fact that it happens hasn't changed, but the timing has gotten earlier, mainly because better nutrition causes earlier puberty, but also things like obesity and stuff have an effect.