智力障碍：一种轻度到重度的智力障碍，智力能力相当于智商在70到75或以下，并伴有在社交、实践和概念技能方面的显著限制，这些技能对于独立日常功能是必要的，并且在18岁之前出现。
mental retardation //
名词 the condition of having a low intelligence quotient (below 70) 智商低下; 智商在70以下
lack of normal development of intellectual capacities
同义词： retardation / backwardness / slowness / subnormality
智力低下-引用次数：29
智力障碍-引用次数：14
智力落后-引用次数：5
参考来源自闭症儿童刻板行为的积极干预研究
智力迟钝
精神发育迟滞
弱智-引用次数：12
Through story-situational method, we examined the effects exerted by different story-situation on normal and mental retardation children by means of accomplishing "disappointing gift".
我们在本研究中采用故事情境法，通过让被试完成“不称心礼物”任务，探索了故事情境对正常和弱智儿童理解白谎的影响。
参考来源故事情境对儿童理解白谎的影响
智力落后
精神发育迟滞
精神发育迟缓
智力障碍-引用次数：3
In a long time, the disabilities in our country face great difficulties in working and living, especially the persons with mental retardation.
在长时间内，我国残障者在日常生活与学习工作中需要面对巨大的困难，特别是智力障碍者。
研究背景、目的和意义精神发育迟滞(mental retardation,MR)是由生物、心理、社会多种因素引起的以智力发育明显落后于正常水平和适应生活能力缺陷为主要特征的一组发育...
疾病的鉴别 （三）精神发育迟缓（mental retardation 精神发育迟缓（ MR） ）是由于智力和社会适应能力低下、认知障碍而出现 活动过度、注意力不集中和学习困难等症状。
... Meningitis: 脑膜炎 Mental Retardation (MR): 智能障碍；智力障碍 Multiple Sclerosis (MS): 多发性硬化症 ...
R31;先天缺陷（Birth defects）：智力迟钝（Mental retardation） 胎儿酒精症候群（Fetal Alcohol Syndrome）：
Studies show that iodine deficiency is the leading preventable cause of mental retardation.
研究显示，缺碘是智力发育迟缓的一个主要但可预防的因素。
Hoheneck also has patients with profound mental retardation, some of whom are wheelchair bound.
Heheneck还有一些由于严重精神问题导致智力迟钝的病人，其中一些不得不坐轮椅。
Typical symptoms of mercury poisoning include mental retardation, loss of balance, tremors, blindness and loss of hearing.
水银中毒的典型症状包括精神迟缓，平衡失调，颤抖，失明，失聪。
Mrs.Shriver said that the Special Olympics proved a very important fact: that exceptional children with mental retardation can be exceptional athletes.
VOA : special.2009.08.23
Down syndrome is the most common genetic cause of mental retardation.
VOA : special.2009.09.09
Excerpted from The Kennedy Family and the Story of Mental Retardation by Edward Shorter.
She constantly emphasized growth: we grow as we help those with mental retardation grow.
It hits one in 5, 000 kids and causes mental retardation, anxiety and autismlike symptoms.