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学习能力障碍的第二类是计算能力障碍(Mathematics disorder)
A.计算能力大大地低于其相应年纪,智力与教育程度:
mathematical ability, as measured by individually administered standardized tests, is substantially below that expected given the person's chronological age, measured intelligence, and age-appropriate education.
B.计算能力的低下严重影响其数学知识的获得,也严重影响其日常生活所需的计算能力;
The disturbance in criterion A significantly interferes with academic achievement or activities of daily living that require mathematical ability.
C.如果其伴有某感觉器官的缺陷,那么起计算能力的障碍仍然超出了感觉器官缺陷所造成的能力低下程度.
If a sensory deficit is present, the difficulties in mathematical ability are in excess of those usually associated with it.
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