Wang points to a recent study of "mixed, inclusive" education done by the US Department of Education in 1994. In the study, children from special education classes were placed in normal classrooms. Virtually all types of special-ed kids were successfully integrated into normal classes, with one exception--hyperactive children.
王大延指出，一九九四年，美國聯邦教育部對所謂的「融合、包容」教育做過研究，將特殊兒童回歸普通班級上課，結果幾乎所有類型都有成功的例子，唯獨在性格、行為異常的孩子身上沒有成功，這其中就包含了過動兒。