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为探讨影响蒙古族学生智力发育的有关因素及蒙古族学生智力发育的一般规律,我们于 1989年6月对旗内蒙古族在校小学生、幼儿园儿童共624名(男323名,女301名)及以在牧
In order to explore the relevant factors that affect the mental development of Mongolian students and the general rules of mental development of Mongolian students, we conducted a survey of 624 (323 male and 323 female) children of Inner Mongolia primary schoolchildren and kindergartens in June 1989 and In the pasture