1. Child near such adult doesn't live — they scan. Their brain works like alarm siren: steps in corridor, door click, sharp inhale — everything reads as possible explosion. Girl said she could "tell by key loudness" whether to speak or stay silent. And even when there's silence, body of such children continues waiting for blow, because once blow could come without reason. 2. These children develop habit of apologizing in advance. They say "sorry" before anything happened, because at home "wrong