Sign language refers to the variety of manual communication systems that allow deaf or hard-of-hearing people to convey and receive information visually. While there are hundreds of sign languages in use across the world, some of the most well-known ones include American Sign Language (ASL), British Sign Language (BSL), International Sign Language, French Sign Language, Italian Sign Language, and Japanese Sign Language. Sign language plays a very important role in enabling deaf communities to communicate and lead independent and fulfilling lives with equal access to information and opportunities as the hearing population.
A brief history – While sign languages have been used for thousands of years, they were not formally studied and recognized as independent languages until the late 18th century. At that time, philosophers like Abbé de l’Épée in France began establishing deaf schools and developing sign language grammars. This marked the beginning of modern signed languages as we know them today. In the United States, ASL emerged as a creole language combining elements from French Sign Language and indigenous sign languages that deaf Americans used. It was not until 1960 that ASL was recognized as a true language with its own grammatical rules and structure. Since then, sign linguistics has emerged as a field focusing on understanding how signed languages work compared to spoken ones.
Structure and grammar – Like spoken languages, sign languages have their own unique grammatical structures and rules of formation. At the core level, signs are formed using hand shapes, locations, palm orientations, and movements. These manual components are combined in conventionalized ways to represent concepts. Sign languages also use non-manual markers like facial expressions and head tilts to modify meaning. Grammar includes rules for word order, verb inflection, pronouns, classifiers, negation, pluralization, possession, questions, topicalization and other linguistic structures. Studies show signed languages employ the full expressive power of language despite relying on a visual-spatial modality versus auditory-oral one for spoken languages.
Acquisition and development – Deaf children whose primary language exposure is a sign language from infancy acquire it in very similar timelines and sequences as hearing children do for spoken languages. Babies begin developing communicative gestures from 6 months onward which gradually incorporate conventional signs. By age 2-3, the average signing child shows mastery of basic lexical, morphological and syntactic structures. In families where parents are not deaf but learn to sign, children may begin acquiring the language later between ages 3-5 but still follow typical developmental patterns. Those exposed to sign as a second language later in life usually require more time and effort to gain full fluency comparable to a native user.
Types of sign languages – While there is no universal sign language, many share common characteristics and origins. The major language families include:
French-based: includes ASL, Quebec Sign Language (LSQ) which developed separately in North America.
British-based: includes BSL, Australian Sign Language, New Zealand Sign Language which share lexical and grammatical influences from BSL.
Japanese Sign Language and Korean Sign Language emerged independently.
Chinese Sign Language varies regionally but Taiwanese Sign Language is a distinct language.
Scandinavian and Nordic countries developed their own languages like Swedish Sign Language.
Arab countries like Egypt, Lebanon, Palestine have indigenous signed languages.
Countries with historical links to France including West and Central Africa have signed languages tied to French Sign Language.
Community and culture – For many deaf individuals, sign language plays a central role in their cultural identity and sense of belonging to the deaf community. Deaf cultural values, art, history, humor and shared experiences are largely communicated via the unique properties of sign languages. In deaf-led spaces, sign is the preferred and dominant means of interaction. The challenges of language deprivation for those without early access to signing are an ongoing social issue affecting deaf people’s wellbeing and civil rights. Many advocate for the preservation and promotion of sign languages to foster fully accessible and dignified lives for deaf communities worldwide.
Teaching methodologies – There are several key principles and best practices for instructing sign languages effectively:
Immersion techniques work best, with maximal visual feedback and repetition to internalize patterns. Interpreting aloud can interfere with focus on the manual modality.
Authentic usage examples from native signers are ideal teaching tools over translations into spoken language.
Visual learning aids like signing videotapes, interactive software provide exposure outside the classroom.
Frequent assessment of receptive comprehension is needed since productive signing may lag comprehension development.
Drills on the core phonological parameters help strengthen visual-spatial memory abilities required for fluency.
Cultural components are integrated since sign languages are inextricably tied to deaf identities and experiences.
In later stages, discourse analysis and sociolinguistic features receive greater attention.
Technology advancements – The online accessibility of sign language video content is expanding by leaps and bounds. Many educational, media and government websites offer interpreting in major signed languages. Real-time video remote interpreting apps allow deaf individuals to access services seamlessly. Wearables like smart glasses might one day provide simultaneous transcriptions of sign for hearing viewers. AI systems are being trained to recognize and translate between signed and spoken languages. While not perfect replacements for human interactions, these innovations promise to increase inclusion of deaf communities worldwide.
Sign languages are fully-fledged natural languages worthy of recognition and respect. Gaining fluency requires focused study but opens doors to vibrant deaf cultures globally. With advances in technology and methodologies, they will hopefully become even more universally accommodated. Their versatility remains unmatched for visual communication where audiological barriers exist.
Andrew Stroud