[Wei, Hua] Qingdao Univ, Normal Coll, Qingdao 266071, Peoples R China.
[Ding, Huimin] Renmin Univ China, Sch Educ, 59 Zhongguancun St, Beijing 100872, Peoples R China.
[Huang, Feng] Chinese Acad Sci, Inst Psychol, Beijing 100101, Peoples R China.
[Huang, Feng] Univ Chinese Acad Sci, Dept Psychol, Beijing 100049, Peoples R China.
[Fang, Jiashuai] Cent China Normal Univ, Fac Educ, Wuhan 430079, Hubei, Peoples R China.