Methods Field study was adopted in forty students in a certain hygienic school, whose age were 17 to 18. Observational indicators were as follows: visuognosis persistence, visual-motor reflex time, reading number, error ratio, intellective capacity index.
方法对某卫生学校40名17~18岁学生进行,现场研究,观察指标为明视持久度、视觉运动反应时、阅字数、错误率、脑力工作能力指数。
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