In this short article, we discuss what is specific language impairment (SLI) and why it is a hidden disability that few people have heard about. We describe the impact on research, policy and practice of SLI being a neglected condition. We end by providing the background and rationale of a new internet campaign, RALLI (www.youtube.com/rallicampaign), aimed at changing this state of affairs and raising awareness of SLI.
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