Mouth Actions in Sign Languages: An Empirical Study of Irish Sign Language

Mouth actions in sign languages have been controversially discussed but the sociolinguistic factors determining their form and functions remain uncertain. This first empirical analysis of mouth actions in Irish Sign Language focuses on correlations with gender, age, and word class. It contributes to the linguistic description of ISL, research into non-manuals in sign languages, and is relevant for the cross-modal study of word classes.