Hi, I'm Rina Ninean and this is Ask Lisa, the Psychology of Parenting Podcast.

It's a podcast to help parents better understand their kids. Dr. Lisa DeMore, a psychologist with three

decades of experience, and the author of three New York Times best-selling parenting

books takes your questions. Both of us are moms ourselves, and we're eager to hear from you.

So send us your questions to Ask Lisa at Dr.LisaDemore.com. And you can join our community by

following us on Instagram, Facebook, Twitter, and LinkedIn. The handle is Ask Lisa Podcast. And also subscribe to our

brand new YouTube channel, Ask Lisa Podcast. Oncore episode 150, how do I get my son to stop picking on

his little sister? Why are siblings sometimes so cruel to each other? It's a struggle parents are constantly forced to deal with.

And I know when they're on winter break, it can feel even worse when they have more time together.

Dr. Lisa takes us inside the adolescent brain. She discusses how the start of puberty can make emotional control harder for kids.

We also discuss gender dynamics. And Lisa explains the start of puberty can make emotional control harder for kids. We also discuss gender dynamics.

And Lisa explains the importance of not shaming one child when they hurt another. We also discuss what parents can do in the moment, and even after a big blowout, to make sure there is no lasting

harm. Lisa and I want to wish you a Merry Christmas and a Happy New Year. Well, we decided to

tackle the issue of sibling rivalry. Why do they happen? What's going on here? Especially before we get

into the summer months, Lisa, when they're going to be around each other all the time. They are,

and it can get spicy. Rina, it can get spicy. So we got this great letter. It says, Dear Dr. Lisa,

my 13-year-old son is a really great kid, but he's just mean to his 11-year-old sister. We don't

allow name-calling in her house, but he barks answers at her when she asks a question,

aggressively corrects her when she makes a mistake, and is constantly and obviously

annoyed by her mere presence. To make matters

worse, my daughter looks up to her brother and tends to second his opinions, which drives him crazy.

I've tried to talk to him, but he says, we just don't know how much she annoys him on purpose

...