American Sign Language (ASL) is a natural language that serves as the predominant sign language of Deaf communities in the United States and most of Anglophone Canada. ASL is a complete and organized visual language that is expressed by facial expression as well as movements and motions with the hands. Besides North America, dialects of ASL and ASL-based creoles are used in many countries around the world, including much of West Africa and parts of Southeast Asia. ASL is also widely learned as a second language, serving as a lingua franca. ASL is most closely related to French Sign Language (LSF). It has been proposed that ASL is a creole language of LSF, although ASL shows features atypical of creole languages, such as agglutinative morphology.
Fingerspelling is the representation of the letters of a writing system, and sometimes numeral systems, using only the hands. These manual alphabets have often been used in deaf education and have subsequently been adopted as a distinct part of a number of sign languages. There are about forty manual alphabets around the world. Historically, manual alphabets have had a number of additional applications—including use as ciphers, as mnemonics and in silent religious settings.
Sign languages are languages that use the visual-manual modality to convey meaning. Sign languages are expressed through manual articulations in combination with non-manual elements. Sign languages are full-fledged natural languages with their own grammar and lexicon. Sign languages are not universal and are usually not mutually intelligible with each other, although there are also similarities among different sign languages.
International Sign (IS) is a pidgin sign language which is used in a variety of different contexts, particularly at international meetings such as the World Federation of the Deaf (WFD) congress, events such as the Deaflympics and the Miss & Mister Deaf World, and informally when travelling and socialising.
Auslan is the majority sign language of the Australian Deaf community. The term Auslan is a portmanteau of "Australian Sign Language", coined by Trevor Johnston in the 1980s, although the language itself is much older. Auslan is related to British Sign Language (BSL) and New Zealand Sign Language (NZSL); the three have descended from the same parent language, and together comprise the BANZSL language family. Auslan has also been influenced by Irish Sign Language (ISL) and more recently has borrowed signs from American Sign Language (ASL).
Signing Exact English is a system of manual communication that strives to be an exact representation of English vocabulary and grammar. It is one of a number of such systems in use in English-speaking countries. It is related to Seeing Essential English (SEE-I), a manual sign system created in 1945, based on the morphemes of English words. SEE-II models much of its sign vocabulary from American Sign Language (ASL), but modifies the handshapes used in ASL in order to use the handshape of the first letter of the corresponding English word.
Deafblindness is the condition of little or no useful hearing and little or no useful sight. Different degrees of vision loss and auditory loss occur within each individual, thus making the deafblind community unique with many types of deafblindness involved. Because of this inherent diversity, each deafblind individual's needs regarding lifestyle, communication, education, and work need to be addressed based on their degree of dual-modality deprivation, to improve their ability to live independently. In 1994, an estimated 35,000–40,000 United States residents were medically deafblind. Helen Keller was a well-known example of a deafblind individual. To further her lifelong mission to help the deafblind community to expand its horizons and gain opportunities, the Helen Keller National Center for Deaf-Blind Youths and Adults, with a residential training program in Sands Point, New York, was established in 1967 by an act of Congress.
The American Manual Alphabet (AMA) is a manual alphabet that augments the vocabulary of American Sign Language.
Several manual alphabets in use around the world employ two hands to represent some or all of the letters of an alphabet, usually as a part of a deaf sign language. Two-handed alphabets are less widespread than one-handed manual alphabets. They may be used to represent the Latin alphabet or the Cyrillic alphabet.
The recorded history of sign language in Western societies starts in the 17th century, as a visual language or method of communication, although references to forms of communication using hand gestures date back as far as 5th century BC Greece. Sign language is composed of a system of conventional gestures, mimic, hand signs and finger spelling, plus the use of hand positions to represent the letters of the alphabet. Signs can also represent complete ideas or phrases, not only individual words.
Manually-Coded English (MCE) is a type of sign language that follows direct spoken English. The different codes of MCE vary in the levels of directness in following spoken English grammar. There may also be a combination with other visual clues, such as body language. MCE is typically used in conjunction with direct spoken English.
A contact sign language, or contact sign, is a variety or style of language that arises from contact between deaf individuals using a sign language and hearing individuals using an oral language. Contact languages also arise between different sign languages, although the term pidgin rather than contact sign is used to describe such phenomena.
Stokoe notation is the first phonemic script used for sign languages. It was created by William Stokoe for American Sign Language (ASL), with Latin letters and numerals used for the shapes they have in fingerspelling, and iconic glyphs to transcribe the position, movement, and orientation of the hands. It was first published as the organizing principle of Sign Language Structure: An Outline of the Visual Communication Systems of the American Deaf (1960), and later also used in A Dictionary of American Sign Language on Linguistic Principles, by Stokoe et al. (1965). In the 1965 dictionary, signs are themselves arranged alphabetically, according to their Stokoe transcription, rather than being ordered by their English glosses as in other sign-language dictionaries. This made it the only ASL dictionary where the reader could look up a sign without first knowing how to translate it into English. The Stokoe notation was later adapted to British Sign Language (BSL) in Kyle et al. (1985) and to Australian Aboriginal sign languages in Kendon (1988). In each case the researchers modified the alphabet to accommodate phonemes not found in ASL.
Manually coded languages (MCLs) are a family of gestural communication methods which include gestural spelling as well as constructed languages which directly interpolate the grammar and syntax of oral languages in a gestural-visual form - that is, signed versions of oral languages. Unlike the sign languages that have evolved naturally in deaf communities, these manual codes are the conscious invention of deaf and hearing educators, and as such lack the distinct spatial structures present in native deaf sign languages. MCLs mostly follow the grammar of the oral language—or, more precisely, of the written form of the oral language that they interpolate. They have been mainly used in deaf education in an effort to "represent English on the hands" and by sign language interpreters in K-12 schools, although they have had some influence on deaf sign languages where their implementation was widespread.
American Sign Language literature is one of the most important shared cultural experiences in the American Deaf community. Literary genres initially developed in residential Deaf institutes, such as American School for the Deaf in Hartford, Connecticut, which is where American Sign Language developed as a language in the early 19th century. There are many genres of ASL literature, such as narratives of personal experience, poetry, cinematographic stories, folktales, translated works, original fiction and stories with handshape constraints. Authors of ASL literature use their body as the text of their work, which is visually read and comprehended by their audience viewers. In the early development of ASL literary genres, the works were generally not analyzed as written texts are, but the increased dissemination of ASL literature on video has led to greater analysis of these genres.
Sophia Kindrick Alcorn was an educator who invented the Tadoma method of communication with people who are deaf and blind. She advocated for the rights of people with disabilities and upon retiring from her long career in teaching, she worked with the American Foundation for the Blind.
Black American Sign Language (BASL) or Black Sign Variation (BSV) is a dialect of American Sign Language (ASL) used most commonly by deaf African Americans in the United States. The divergence from ASL was influenced largely by the segregation of schools in the American South. Like other schools at the time, schools for the deaf were segregated based upon race, creating two language communities among deaf signers: white deaf signers at white schools and black deaf signers at black schools. Today, BASL is still used by signers in the South despite public schools having been legally desegregated since 1954.
John Lee Clark is an American deafblind poet, writer, and activist from Minnesota. He is the author of Suddenly Slow (2008) and Where I Stand: On the Signing Community and My DeafBlind Experience (2014), and the editor of anthologies Deaf American Poetry (2009) and Deaf Lit Extravaganza (2013). Clark was the recipient of a 2020 National Magazine Award. He is a prominent activist in the Protactile movement.
Protactile is a language used by deafblind people using tactile channels. Unlike other sign languages, which are heavily reliant on visual information, protactile is oriented towards touch and is practiced on the body. Protactile communication originated out of communications by deafblind people in Seattle in 2007 and incorporates signs from American Sign Language. Protactile is an emerging system of communication in the United States, with users relying on shared principles such as contact space, tactile imagery, and reciprocity.
