Brothers with Down Syndrome.

[FlawlessHappiness]

While I can be certain that it has to do with development within the womb or recessive genetics - why are they affected by down syndrome.

Also, are you affected by it? If not, can I ask how you aren't while they are?

I have no idea.

No I'm completely normal (As from what everybody tells me )

I'm not sure how it works but I'm guessing it's a genetic mistake.
In my real family I have 2 siblings.
I came first, completely normal.
Then my brother with down syndrome.
Then my sister, completely normal.

It happens. It's not a thing like a disease.

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but what can we do? It's only when he is in that mood... I just don't like sitting beside him anymore...

About the glass dropping part and trying to get attention, at that point I'd make sure he gets punished good and proper so he gets taught that demanding attention is bad.

It doesn't work that way! You can't.

Punishment is not a thing. He does not understand things like punishment.
He just understand that he is being punished. Not why.
Why is not a thing.

He does not question why things happen. I don't know how to explain it. That's how I understand it. I know it sounds dangerous but he's been in the world before and he knows how to act. It's only if he goes really tired or everything is wrong in his world.

When he knows he has done something bad he starts talking or yelling: "No, Sebastian!", "You can't do that", "She becomes sad", "Now she's angry"... Because that's what people have told him when they yelled at him...
It does not work. He kind of wants the yelling, because it's a reaction. Everyone likes getting a reaction. He does not care if it's a bad or good one.