"Language Development in Children: Description to Detect and Prevent Language Difficulties" is focused on the description of language development and the variables affecting the early detection and prevention of language difficulties. Although language difficulties are very common (14%), these difficulties are misdiagnosed due to the lack of visibility and knowledge from professionals of their long-term consequences in education and mental health. To prevent the misdiagnosed identification and assessment of language difficulties, more typical and atypical language studies are needed. In this sense, a good description of language acquisition could help to detect and prevent language difficulties. Nevertheless, most of the research on child language development has been conducted in English and several cross- linguistic studies have