What is a "paralinguistic feature" in sign language?

A "paralinguistic feature" in sign language refers to the additional elements that accompany the manual signs and contribute to the overall meaning of the message. In this context, options like facial expressions, body language, and gestures play a significant role in conveying emotions, intentions, and nuances. These non-manual signals work alongside the signed content to enhance communication, similar to how tone of voice and pitch function in spoken languages.

Paralinguistic features are crucial for ensuring the message is understood correctly. For example, a raised eyebrow can indicate a question or surprise, while specific head movements can convey affirmation or negation. In contrast, other options listed do not capture the essence of paralinguistics: using formal language pertains to the choice of vocabulary and structure rather than how it is expressed, a specific sign focuses solely on the manual component without acknowledging the surrounding context, and grammar pertains to the rules governing the structure of signs rather than the additional expressive elements that accompany them.