A study examined the effects of the use of sign language in young hearing children's language development. The study tracked a class of 19 Maryland students from their first week of prekindergarten over the 2-year period that ended with the last week of their kindergarten year. Subjects received sign instruction during the prekindergarten year and…

Some 76 hearing children in prekindergarten classes, half receiving sign instruction and half not, were tested on English vocabulary acquisition. Children who received the sign instruction scored significantly higher on the Peabody Picture Vocabulary Test than children receiving sign instruction. (Contains 15 references.) (Author/LB)