This article offers a brief overview of historical linguistics and explores the value of historical "sign" linguistics. The specific focus of the article is on the question of the extent to which the concept of "sign language families" is a legitimate and useful one. It is suggested that although lateral transmission and…

In this paper, we survey current evidence on cognitive precursors of reading in different orthographies by reviewing studies with a cross-linguistic research design. Graphic symbol knowledge, phonological awareness, morphological awareness, and rapid automatized naming were found to be associated with reading acquisition in all orthographies…