What defines a developmental language disorder?

A developmental language disorder is characterized primarily by a deficit in age-appropriate use of language skills, which aligns precisely with the correct choice provided. This condition affects a child's ability to use and understand language effectively as compared to their peers, which may manifest in difficulties with grammar, vocabulary, or the ability to communicate with others in a socially acceptable manner.

This definition acknowledges that while the individual may have some language skills, they may not be sufficient for their age or developmental stage, leading to challenges in both expressive and receptive language. This can significantly impact their academic performance and social interactions.

Contrastingly, the other options do not accurately encompass the nature of a developmental language disorder. A complete lack of language skills suggests a more severe impairment than typically observed in children with a developmental language disorder. A temporary delay in speech may imply that the child will catch up in language development over time, which does not align with the ongoing nature of developmental language disorders. Finally, stating an inability to learn any form of communication incorrectly describes the condition, as individuals with developmental language disorders can often learn some form of communication, albeit with challenges. Thus, option B is the most appropriate definition for a developmental language disorder.