Siek K, Wallis U
Z Gesamte Hyg. 1989 Jan;35(1):48-9.
The knowledge of 9-10 years old disabled pupils and the knowledge of not-disabled pupils of the same age about the respective other group does not only differ with regard to its extent but also to its contents from the knowledge of 11-12 years old disabled and not-disabled pupils, respectively.
9至10岁残疾学生以及同龄非残疾学生对彼此群体的了解，不仅在程度上，而且在内容上，都与11至12岁残疾学生和非残疾学生对彼此群体的了解有所不同。
