Validation of Signed Language Tests for Adult L2 Learners

This chapter focuses on the validity of tests of second language (L2) signed language learners. Test validity depends on how test developers take the language as well as the modality into consideration and how the test captures natural variation in local signed languages, which impacts the use of tests and interpretation of results. In this chapter, the argument-based approach to validation is used to evaluate claims that test developers make about the uses of tests. A sample of signed language tests for L2 learners is reviewed and discussed. Caution in the extrapolation and making decisions based on test results are discussed. The chapter ends with suggestions about how to evaluate the validity of future L2 signed language tests.