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智商(ZQ)以100加减5为正常范围。超过115,智商较高;5～70之间称边缘状态,应视为可疑,需做进一步检查综合判断;低于70,便属智力低下,俗称弱智。弱智分三度。轻度称愚鲁,ZQ70～50之间,患儿特点是生活能自理,从事简单劳动,言语较连贯,但学习困难,尤其计算差。80%弱智属此类。中度弱智称痴鲁,ZQ45～30之间,特点是生活半自理,能掌握极简单的动作技能,但不协调,言语简单缺乏连贯性,不能入学。
IQ (ZQ) to 100 plus or minus 5 for the normal range. More than 115, higher IQ; between 5 to 70, said the edge of the state should be considered suspicious, to be further examined comprehensive judgments; below 70, it is mental retardation, commonly known as mentally handicapped. Mentally retarded three times. Slightly said that the stupid Lu, ZQ70 ~ 50, children with the characteristics of life can take care of themselves, engaged in simple labor, speech more coherent, but learning difficulties, especially poor. 80% of mentally handicapped are of this type. Moderate mentally handicapped demeanor, ZQ45 ~ 30, is characterized by semi-self-care life, can master very simple motor skills, but not coordinated, speech is a simple lack of coherence, can not enroll.