translation.en: Lack of stimulation often leads to self-stimulating behaviors like hand-flapping, rocking back and forth, or aggression, and in some institutions, psychiatric drugs are used to control the behavior of these children, whilst in others, children are tied up to prevent them from harming themselves or others.
translation.zh: 缺乏刺激通常会导致一种自我刺激的行为 像是拍手，前后摇晃， 或是具有侵略性，在某些机构里，精神药物 用来控制这些孩子们的行为， 同时，孩子们被绑起来从而防止他们 伤害自己或他人。