1. Xichen Wang, Department of Special Education, Faculty of Education, Shaanxi Normal University, Xi'an, China and Xi'an No. 2 Longya School, Xi'an, China
2. Qianqian Wang, Department of Special Education, Faculty of Education, Shaanxi Normal University, Xi'an, China and Dalian No. 3 Middle School, Dalian, China
3. Minjie Ma, Department of Special Education, Faculty of Education, Shaanxi Normal University, Xi'an, China and Xi'an Mangya School, Xi'an, China
4. Zhengwei Gu, Department of Special Education, Faculty of Education, Shaanxi Normal University, Xi'an, China and Xi'an Qizhi School, Xi'an, China
5. Yang Shi, Department of Special Education, Faculty of Education, Shaanxi Normal University, Xi'an, China and Xi'an No. 2 Longya School
6. Tingzhao Wang, Department of Special Education, Faculty of Education, Shaanxi Normal University, Xi'an, China