Symptoms can vary from normal to severe developmental delay or mental retardation.

症状变化较大，可以是正常的或严重的发育延迟或智力低下。

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Thirteen patients (27%) were found to have developmental delay at the time of follow-up, and it was severe in seven of them.

在随访的时间内，13例患者(27%)发现有发育延迟，其中7例很严重。

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About 45 to 60 percent of people with TSC have intellectual disabilities including hyperactivity, developmental delay, autism or aggression.

约45至60% TSC患者有智能障碍，包括多动，发育迟缓，自闭症或攻击倾向。

youdao

So, it's not really a developmental ... it's not really a developmental delay in the way that it might make sense to think about certain forms of retardation.

孤独症并非发展延迟,不应当把它理解为,某种形式的发育迟缓

耶鲁公开课 - 心理学导论课程节选

That same period witnessed a 25% jump in parents' reporting a child with a developmental delay.

WSJ: ADHD Warning Signs and Kids: Growing Pains or Cause for Concern?

It includes a number of changes for childhood disorders, including new diagnoses such as social communication disorder and global developmental delay, and broadened criteria for learning disorders.

WSJ: ADHD Warning Signs and Kids: Growing Pains or Cause for Concern?

To date, 32 have received a provisional or final diagnosis of autism spectrum disorder and another 101 have been found to have other conditions that involve developmental delay.

BBC: Screen may spot autism in one-year-olds