Measuring language dominance in bilinguals with two sign languages

Abstract

Abstract This study examines whether a multi-faceted construct of language dominance developed for spoken languages applies to signed language bilinguals. Sign languages have been described as highly iconic and relatively similar to each other compared to spoken languages. Attaining fluency in the signed modality might well require considerably less effort, and balanced bilingualism may be more prevalent in the signed modality. Language dominance constructs, as currently understood, might differ in the spoken and signed modality. Forty bilinguals with two sign languages responded to a language dominance questionnaire developed for spoken languages and performed a phonological fluency (sign generation) task. Language dominance levels were found to vary in the signed modality. The correlation between reported dominance levels and the number of signs generated in each sign language was significant, suggesting that the construct of language dominance tested is robust and independent of modality.