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…

Analysis of the performance of beginning American Sign Language students, who had only recently learned the manual alphabet, on a task in which proactive interference would build up rapidly on successive trials, supported the view that different languages have separate memory stores. (Author/CB)