It was very hard to cultivate good behavior and all too easy for disturbed emotions to spread. The children in the emotionally disabled class did not have the variety of stimuli that other children have and they would very rarely do things together. Not only would the things they were taught be only half done, but there also appeared the phenomenon of regression.
好的行為很難培養，不安的情緒卻很容易感染，情障班的自閉兒缺乏其他孩子多樣的刺激，再加上自閉兒之間少有互動，不僅教來事倍功半，甚至還有退化現象。