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Article analysis:

The article is generally reliable and trustworthy, as it is based on a systematic review of the literature and includes 25 randomized controlled trials of parent-implemented language interventions examining linguistic outcomes for young children. The results indicate that there are modest improvements in expressive vocabulary and small improvements in expressive language for children with or at-risk for LI, which is consistent with previous meta-analyses.

However, there are some potential biases to consider when evaluating the trustworthiness and reliability of this article. For example, the study only included 1734 participants (M = 3.7 years) with or at risk for LI due to low SES, so it may not be representative of all populations affected by language impairment. Additionally, the measures used to assess parent training procedures and parent outcomes were limited, which could affect the accuracy of the results. Finally, while the article does present both sides equally, it does not explore any counterarguments or possible risks associated with parent-implemented language interventions, which could provide a more balanced view of the topic.