Specific developmental disorder

Specific developmental disorders (SDD) was a classification of disorders characterized by delayed development in one specific area or areas. Specific developmental disorders were contrasted to pervasive developmental disorders which were characterized by delays in the development of multiple basic functions including socialization and communication.

Extends: [Learning disabilities](https://wikipedia.org.ai/Learning disabilities), [Special education](https://wikipedia.org.ai/Special education), [Specific developmental disorders](https://wikipedia.org.ai/Specific developmental disorders)

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