Design of Signed Language Tests for Deaf L1 Children

Recent changes in the earlier diagnosis of deafness and improved amplification options have meant that deaf children increasingly have better opportunities to develop spoken language. Nevertheless, a significant proportion of children continue to use signed language as a first language (L1), including deaf and hearing children in deaf signing families and deaf children in hearing families where families use signed language in the home. For both groups, mastery of sign language as an L1 is important because it paves the way to communication and also because it provides the basis for development of spoken language, in either its oral or written form, as a second language (L2). It is crucial that signed language development proceeds in an age-appropriate manner, and assessments of signed language are therefore important to ensure that this is the case. However, the development of effective tests of signed language acquisition is not without challenges. This chapter presents these challenges and other issues and gives examples of how available tests seek to overcome them.