Teaching sign language--to deaf or other children with special needs or to hearing children with hard-of-hearing family members--is not new. Teaching sign language to typically developing children has become increasingly popular since the publication of "Baby Signs"[R] (Goodwyn & Acredolo, 1996), now in its third edition. Attention to signing with…

This longitudinal study first administered the Uzgiris and Hunt scales (to predict learning of manual signs) to 34 children (mean age 5) with severe and profound mental retardation. Evaluation four years later indicated that achievement of stage five on the Uzgiris and Hunt scales was necessary for even minimal learning and use of manual signs.…