Nausia How Do Children Induce Vommiting Without Nausia?

How do children induce vommiting without nausia? - nausia

I could not do it if I wanted.
But parents often have children to decide VOMM. How?

I will be presented emotionally, because if the effects of emotional stress make that a person VOMM (probably due to excess adrenaline) can.

Do not cough or no brain function the same as adults, or what?

To scientifically explain it to me?