Ravid & Tolchinksy (R&T) introduce an important concept for the field of language acquisition and development: linguistic literacy. To be ‘linguistically literate’, they say, one must possess both ‘knowledge of the two major linguistic modalities – speech and writing’ and ‘a linguistic repertoire that encompasses a wide range of registers and genres’. These two statements make clear the great breadth of research that the authors have considered in formulating their model.