Yes it's a thing, and kids should and most likely will grow out of it, so long as there isn't a mental impairment or neurodiverse reason for it. They are looking for your approval and acknowledgment of their opinion, it is extremely important to them, no matter how trivial it is to us grown ups. Their narrow view of the world means you are their world.

@nerdflower My 4yo does the same thing. I feel she's an excellent example of how TCP works. She keeps sending SYN until I ACK.

It's totally normal behaviour. All kids do it.

Don't ignore your kid. It's such a simple situation.

Just respond to them. A little yes or no is enough. They don't need your full attention. They just need confirmation you are listening to them. It doesn't matter if you actually did or not. Just pretend to and answer with generic answers: "really?" "did you now?" "that's awesome"

If you don't, they'll either keep going, or eventually you'll strain your relationship with them. Pretty basic stuff really.

My son tells me what is happening a good three times on several occasions per week. He just wants me to acknowledge it, but sometimes he doesn't even give me a chance to respond before he starts his second iteration.