Disorder of written expression (书写表达困难)
A. Writing skills, as measured by individually administered standardized tests (or functional assessments of writing skills), are substantially below those expected given the person's chronological age, measured intelligence, and age-appropriate education.
一个人的写作表达能力相对同样年龄,同样智力,同样教育条件来说,明显低于正常标准.

B. The disturbance in Criterion A significantly interferes with academic achievement or activities of daily living that require the composition of written texts (e.g., writing grammatically correct sentences and organized paragraphs).
以上写作能力的障碍显著地影响到文化学习和日常生活中所需要的写作表达.如写作时不能做到语法正确,段落分明.

C. If a sensory deficit is present, the difficulties in writing skills are in excess of those usually associated with it.
如果伴有某种感觉缺损,那么需要证实写作能力的障碍已经超过了某种感觉缺损带来的障碍程度.