智力发育障碍，极重度

定义

智力发育极度障碍是指起源于发育期的一种情况，其特征是智力功能和适应行为明显低于平均水平，大约比平均水平低四个或更多标准差（大约低于0.003百分点），基于单独进行的适当规范的标准化测试或在标准化测试不可用时通过可比的行为指标。受影响者的沟通能力非常有限，获得学术技能的能力仅限于基本的具体技能。他们还可能同时存在运动和感觉障碍，通常需要在有监督的环境中获得日常支持以获得充分的照顾。由于现有的标准化智力测试不能可靠或有效地区分智力功能低于0.003%的个体，因此，重度和极度智力发展障碍只能根据适应性行为差异来区分。

A profound disorder of intellectual development is a condition originating during the developmental period characterised by significantly below average intellectual functioning and adaptive behaviour that are approximately four or more standard deviations below the mean (approximately less than the 0.003rd percentile), based on individually administered appropriately normed, standardized tests or by comparable behavioural indicators when standardized testing is unavailable. Affected persons possess very limited communication abilities and capacity for acquisition of academic skills is restricted to basic concrete skills. They may also have co-occurring motor and sensory impairments and typically require daily support in a supervised environment for adequate care. Severe and profound disorders of intellectual development are differentiated exclusively on the basis of adaptive behaviour differences because existing standardized tests of intelligence cannot reliably or validly distinguish among individuals with intellectual functioning below the 0.003rd percentile.

索引词 可用于检索该条目的同义词与别名

• 智力发育障碍，极重度
• 极重度精神发育迟滞障碍
• 极重度精神发育迟滞的行为障碍
• 极重度精神残障
• 极重度精神发育迟滞