Different pronunciations in a silent language? A study of variation in the production of Brazilian Sign Language signs

Abstract

Research on American Sign Language (ASL) phonetics and phonology has shown that signs are made up of distinctive units (parameters) and that these units can exhibit variation in their concrete manifestation. Little is known about Brazilian Sign Language (Libras) distinctive units and their variation. This study represents a fi rst step toward a better understanding of variation in Libras signs, drawing on the analysis of 60 signs as produced by 12 deaf subjects. The analysis of these productions, elicited through images combined with glosses in Portuguese, not only confirmed the occurrence of variation in the handshape, location, movement, orientation, non-manuals and number of hands across subjects, as observed in spontaneous signing, but also revealed variation in other articulatory aspects such as contact. In addition, this study documents variation within the same subject regarding all parameters analyzed.