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How do signed languages use hand movements, body movements, and facial expressions to communicate?
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Linguistics
Much of the foundation of 20th-century sociolinguistics was created by the Swiss linguist Ferdinand de Saussure (1857–1913).
Signed languages are complete, formal linguistic systems that function independently of spoken languages, possessing their own grammar, syntax, and morphology.12
Communication in these languages relies on a sophisticated integration of several nonverbal components:
- Hand Gestures: These serve as the primary building blocks of the language, involving specific hand shapes and movements, often including finger spelling.2
- Placement: The positioning of the hands relative to the upper body is a critical grammatical feature that helps convey meaning.2
- Facial Expressions: These are essential for linguistic expression, often serving to indicate grammatical markers, questions, or emotional nuance.2
- Body Posture: Changes in body orientation and posture are used to structure discourse and clarify the roles of different participants in a conversation.2
While some sign languages, such as American Sign Language, may share geographic roots with spoken languages, they are distinct systems rather than direct translations. These languages are vital tools for communication, particularly within deaf communities.12