用瑞文测验方法测定了湖南省碘缺乏病非病区或轻度缺碘地区城市和农村５～１６岁儿童智力水平。结果表明，城乡儿童智商发育基本正常，均值高于全国常模，呈轻度偏态分布。农村儿童的学龄前期、小学和中学的三个阶段智商呈上升趋势，认为这与社会刺激较少及升学率不高有关 The intelligence level of children aged 5 ~ 16 in urban and rural areas in Hunan Province with iodine deficiency disorders or mild iodine deficiency areas was measured by Raven test. The results show that the IQ of urban and rural children is basically normal, the average is higher than the national norm, showing a slight skewed distribution. The IQ of rural children in three stages of preschool, elementary school and middle school is on the rise. It is considered to be related to less social stimulation and low enrollment rate