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#sign language – @natalunasans on Tumblr
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(((nataluna)))

@natalunasans / natalunasans.tumblr.com

[natalunasans on AO3 & insta] inactive doll tumblr @actionfiguresfanart
autistic, agnostic, ✡️,
🇮🇱☮️🇵🇸 (2-state zionist),
she/her, community college instructor, old.
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I’ve said this before and I’ll say it again but it is absolutely an example of civilizational inadequacy that only deaf people know ASL

“oh we shouldn’t teach children this language, it will only come in handy if they [checks notes] ever have to talk in a situation where it’s noisy or they need to be quiet”

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raginrayguns

My mom learned it because she figured she’ll go deaf when she gets old

My family went holiday SCUBA diving once, and a couple of Deaf guys were in the group. I was really little and I spent most of the briefing overcome with the realization that while the rest of us were going to have regulators in our mouths and be underwater fairly soon, they were going to be able to do all the same stuff and keep talking.

The only reason some form of sign language is not a standard skill is ableism, as far as I can tell.

For anyone interested in learning, Bill Vicars has full lessons of ASL on youtube that were used in my college level classes. 

and here’s the link to the website he puts in his videos:

For BSL, I’ve been (far too) slowly working through the british-sign intro course, which isn’t free but is currently pay-what-you-can.

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Anonymous asked:

Hello! Got a question for you and the blog. Any recommendations on how to write ASL in fic? Either I'm a fool or my google-fu isn't working properly, and I'd love to know if I'm overthinking it and it's just as simple as "bla bla bla," xyz signed, or if there's some other notation I'm missing. Any fic recs with signing would be much appreciated as well! Thanks so much 😄

I had a question about incorporating sign language into fic sometime around a year or two ago, and there was a lot of great discussion in the notes. Here’s one of the many threads that had some interesting viewpoints in it. Sorry about the formatting - I’m not really sure what happened there. 

If anyone wants to share their thoughts on this one, I’d love to hear what you have to say. And of course we’ll be watching the notes for those resources :)

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la-knight

I don’t know if the rules are different for fic but there’s a push by many Deaf writers and bloggers in books to write it the way you write dialogue. So instead of how it’s done in say, the Shannara series (“I’m not sure which way we should go, Garth signed”), you’d write it, “I’m not sure which way we should go,” Garth signed.

However, I’m not Deaf, nor do I speak ASL.

This is something that confuses me a bit. I see many authors use italics or something similar to indicate that someone is speaking in a different language from the one used by most of the characters, so why is it unadvised for ASL (and other sign languages) in specific? If most characters used ASL in a story, would it be a bad idea to differentiate the spoken lines in this same way? If we had a group where some people knew ASL and others didn’t, would it still be bad to differentiate the lines that only half of the group would understand (in a situation where no one can translate for them, for example)?

I’m asking all this because we’re still dealing with two different languages, and at least the way I see it, it feels a little strange to differentiate someone who speaks, idk, Italian and not do the same with sign language in a story where most people use English to communicate.

To make it clear, I’m NOT trying to be offensive in any way or saying people are wrong to suggest this, I just want to understand why this is bad so I won’t do something wrong or offensive out of ignorance.

I can’t speak to Deaf/HoH stuff but wrt incorporating foreign languages in English language stories, I’ve seen discussion from folks in recent years that italicization of non-English words is Othering and can feel alienating to ESL readers because it’s drawing attention to it in a way writers would never do for English. Not sure if I’m explaining the arguments I’ve seen correctly but because italics are otherwise generally used for emphasis, using them for non English words/phrases is unnecessarily singling those words out in the text.

Not everyone feels this way obviously but I’ve seen the sentiment expressed enough times that I’ve moved away from that in my fics, and save italics when I’m actually trying to emphasize something (I have a bilingual OC who swears a lot in French). I convey language use in other ways.

So that’s where the italics pushback comes from. I can imagine similar arguments could be made for writing Deaf/HoH character dialogue with ASL, so personally I would stay away from it and indicate use of signing in other ways.

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not-freyja

As a HoH person who signs: the issue is that you can’t write in ASL. You have no choice but to write in English. If there are a couple lines of dialogue in Spanish, you can write them in spanish, or just use dialogue tags to indicate that another language was spoken. With ASL, it has to be written in the language of the text because no alternative is available.

And I personally love the italics. It lets me know that this line of dialogue is different from the others before I get to the tag.

But whether you’re using italics or not, you just need use the right tags. Always say signed, instead of said. Use words like signed quickly, slowly, haphazard, carefully, to denote voice. Describe facial expressions to get your tone. All of that matters a lot more than whether you italicized the text.

I’m hoh, not D/deaf, let’s put the privilege up front. Call me out on anything I mess up or miss here.

I mostly agree with what @not-freyja said. I think something most folks don’t realize is that ASL (or BSL or most (?) other Deaf sign language) is made up of signs and facial expressions and body language - not written words. There have been various attempts at using English written words to develop a writing system for ASL (not sure about other SLs) but it remains primarily a physical language.

There’s so much history here and I’m such a nerd for it and so much is contextually important that I hate to gloss over it - suffice to say written language/grammar can be a sore spot for the Deaf community and linguists.

So italics or inside quotes or (if you’re not writing in English) indented by —s or however you format sign language dialogue, here are some general tips:

  • Sign is not telepathy. If there’s no one around who knows sign, the person using it is going to find another way to communicate (aka most deaf people in hearing society).
  • Sign language is not the same as signed English. Just like other languages, there’s no word for word translation. You miss things when interpreting - idioms, puns, tones. Sign has its own structure and doesn’t (always) go in the same order of English.
  • The hand part of sign is important, but equally relevant is the tone of the signer - their facial expressions, their body language, the speed and accuracy of the signs, where the signs are in relation to the speaker’s body, etc. Watch videos of people signing and stop looking at their hands. Watch what their faces and bodies do, how expressive they are. Write that.
  • Deaf =/= mute. Lots of deaf people talk. (Oh god, so much more history here that I’m skipping.) Some people have a “deaf accent” and some don’t. Even when someone is signing and not talking, they might click their tongue or scoff or laugh or any number of other mouth sounds. Write that.
  • Last, Deaf =/= personality. Your Deaf character should be a fully formed person: snarky, smart, shy, naive, pessimistic, whatever. They should have goals that don’t have to do with being Deaf. THAT SAID, they aren’t a person “with” deafness - capital D Deaf is an identity and a community. Don’t take that away.

Ask your hoh/D/deaf friends for fic recs and pay attention to how Deaf characters are written. Have someone (or several people) read your work, even outside the fandom. Don’t be afraid to ask for help.

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superlinguo

ASL Signbank: A online dictionary of ASL signs

There is now a publicly accessible signbank for American Sign Language (ASL)!

You can search for ASL signs by using English key words, and if you create an account you can get more information about each of the signs. This video from the site gives some more information:

The ASL Signbank joins similar websites for other signed languages, including:

The Signbank is essentially a dictionary of signs for each of the languages. Each website was set up by a different team at a different time, and have slightly different layouts and functions.

You can see that there are some signs that are similar across languages, e.g. the sign for tree in ASL and BSL looks similar to each other, but different to Auslan, while the sign for dog is different in all three (ASL, BSL, Auslan).

Just as any other dictionary won’t teach you about how to stick words together to make sentences, these Signbanks won’t teach you the grammar of each of these languages - but if you’re learning ASL, BSL or Auslan they’re a great way to look up vocabulary!

Reference

Hochgesang, Julie A., Onno Crasborn & Diane Lillo-Martin. (2018) ASL Signbank. New Haven, CT: Haskins Lab, Yale University. https://aslsignbank.haskins.yale.edu/

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reblogged
“The baby sign language phenomenon connects to what culturally deaf people celebrate as “Deaf Gain:” the notion that all of humanity can gain significant benefits and insights from Deaf visual-spatial contributions to the world, including A.S.L. and all its rich linguistic possibilities. Deaf friends I talk with applaud hearing parents for learning some signs with their children, and express hope that, someday, more people will use a signed language on an everyday basis, making communication easier for all of us. But the developers and users of baby sign language don’t necessarily see A.S.L. fluency as a goal. Many of the books and websites actually assure parents that they don’t need to learn full A.S.L., and also that using baby signs won’t impede a child’s spoken language acquisition. […] Finally, there is one more reason I feel ambivalent when my hearing acquaintances tell me they are using baby signs with their children. Often, I notice that these acquaintances are people who have never attempted to use any sign language with me — even though I am deaf, even though I am the one person they know who could most benefit from visual communication. This omission strikes me as a huge loss, even a huge injustice. […] For decades, medical and educational professionals have discouraged hearing parents from signing with their deaf children. My own parents were told not to sign with me when I was a baby — and then proceeded to disregard that advice, for which I am exceedingly grateful. Some of these professionals believe that speech is superior and signing is only a crutch for spoken language acquisition, despite the fact that A.S.L. has been recognized as a full language since the 1960s. The consequences of this philosophy of enforced speech for deaf education, literacy and language development have been disastrous: It has meant that many deaf children never acquire a fluent native language that will enable them to reach their potential. This is starting to change, but most deaf children still do not receive full A.S.L. exposure in their early years, which are critical for language acquisition. The fundamental injustice of the baby sign-language trend is that our culture touts the benefits of signing for hearing children, but disregards A.S.L. for the deaf children who need it the most.”
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reblogged

For anyone looking for an interesting learning opportunity, this free online course from Georgetown prof Ted Supalla about the linguistics of American Sign Language looks really cool! From the description

This course is a four-week self-paced course. Lecture videos are delivered in ASL with English subtitles and voiceover. The course will introduce all of these students to the science of sign language research and, for fluent ASL signers, the history and structure of their own language. It will also expose students at the intermediate level to the fields of linguistics and the cognitive sciences.
Structure is crucial to languages. There are several layers of grammatical structure in all languages. We will learn about these and examine how sign languages are structured.
Learning is how children and adults acquire the ability to understand and use a sign language.
Change takes place over time in all languages. Recent research on historical change in ASL and other sign languages has begun to reveal how sign languages come into existence and how they change as they are used over generations among deaf and hearing users. We will look at historical change in depth, especially the historical heritage of ASL.
How has our understanding of signed language changed over time? People used to think signed systems were not languages, [that] they were pantomime or simple codes representing the surrounding spoken language. Then, starting 50 to 60 years ago, linguists began to show that sign languages were actually independent languages with structures of their own. 
This early research focused on the most basic properties of American Sign Language, showing, for example, that signs are composed of combinations of the features of location, movement, handshape, and hand orientation. Subsequent research has shown that mature sign languages (those with a long history of use among Deaf people) have much more complex structures at all levels, and that young sign languages in earlier stages of development can be studied to provide important information on how complex, mature languages develop over time. 
You recently launched a massive open online course (MOOC). What drew you to the MOOC format? Have you noticed any particular advantages or disadvantages of teaching that way?
I appreciate that the MOOC format allows me to integrate introductory to advanced information about the structure and history of signed languages with instructional materials I have developed for upper-level undergraduate courses such as Brain and Language and the Structure of ASL for the departments of cognitive science, linguistics, and ASL at various universities. 
The MOOC format permits me to combine my lectures (in American Sign Language — since I am a native signer myself — and English voiceover with captions too) with PowerPoint slides outlining and illustrating what I am lecturing about, links to movies and demos of the material I am discussing, and homework exercises to give students practice in seeing the structure of signed languages. This multimedia format provides a rich learning environment, especially for the many interested students who are unfamiliar with such materials.
We have designed the course so that students from diverse backgrounds can all participate in this journey. Our students run the gamut from those who are native sign-language users to those who are not signers but are interested in learning about different languages of the world. 

The online course has no background knowledge required and you can start at any time. I’m not affiliated with them, I just think it sounds awesome! Check out the course here

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reblogged

Sometimes I want to find the person who first came up with the idea that it is “ableist” or a form of “cultural appropriation” for hearing people to want to learn sign language

and give them a really blistering lecture about how they are completely abusing the concept of “ableism” and “appropriation”.

No, it is not ableist for ANYone to want to learn sign language.

No, it is not appropriation for ANYone to want to learn sign language.

Deaf people WANT for more people to learn sign language so we can have more people to communicate with.

So please, *please* don’t ever tell anyone that their wanting to learn or use sign language is in any way ableist or “appropriation”. Because it is *not*.

If you are a person with auditory processing issues, then we WANT for you to learn sign language if it might make communication easier for you.

If you are a person who is non-verbal, then we WANT for you to learn sign language if it might make communication easier or more accurate for you.

Yes, we still want you to learn sign language even if your auditory processing issues, or your loss of speech, only happens sometimes and not all the time. Part time need for sign language is still *need for sign language*.

Yes, we still hope you will consider learning sign language even if you have no personal need for sign language at all. Your learning sign language can give *us* more people to communicate with, and therefore still benefits *us*. It is not ableist for you to want to learn sign language to benefit other people. In fact, it’s basically the *opposite* of ableist because it makes it easier for us to be fully included in society.

A more detailed response for people wanting to learn sign language, particularly for people with auditory processing issues.

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rikkipoynter
From Being An Oral Deaf Adult To Using ASL [CC]

In this video, I’m talking about a little of my life growing up with English and how that affects me learning and using ASL.

As always, reblogs are appreciated as they help support my channel and if you want to support my channel in other ways, consider pledging on Patreon here.

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An interesting study about synesthesia in sign languages: 

They recruited 50 volunteers with the type of synaesthesia that means they experience colours with letters, around half of whom were fluent in sign language too. All the participants watched a video of sign language and were asked if it triggered any colours.
Of those that understood sign language, four of them did indeed associate colours with the signed letters – and the colour was the same as they saw for written letters. For example, those that see the letter A as pink also associate pink with the hand sign used for that letter.
However, those who didn’t understand sign language did not report associating any colours with the gestures. This suggests that it is the meaning of letters and other symbols that is important for triggering other sensations – the action is not enough by itself.
Most of those in the study who knew sign language were not hard of hearing, and had learned to sign in later life. This suggests that their synaesthesia had adapted to this new form of language, says Ward. “It tells us that synaesthesia is not fixed in early life – exposure can bring new synaesthesia,” he says.

Unfortunately both the summary article and the abstract do the thing where they refer to simply “sign language(s)” rather than specifying which one(s). The paper isn’t open access, but from the tags and the authors’ affiliations, it looks like the study was probably done with both American Sign Language and British Sign Language (which are not mutually intelligible).

It would have been interesting if they’d surveyed first-language speakers of ASL, BSL or other sign languages. As someone who has grapheme-colour synesthesia and finds that it kinda transfers but less vividly to new alphabets that I’ve learned later in life (e.g. Arabic), it’s not surprising to me that they found only a few grapheme synesthetes who were also manual alphabet synesthetes. Hopefully this study is just the beginning of a larger research program. 

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headcanon that since the slytherin common room is under the lake there’s a room where the walls and ceiling are glass and you can just see into the lake like an aquarium

headcanon that when this was first done the mermaids got really aggressive and hateful about it and started ramming the glass but since it was magic this just caused them injuries

until a deaf/hoh slytherin started to teach them sign language and it took a long time bit by the time they left hogwarts they and the rest of the house were communicating with the mermaids and on good terms

eventually it becomes a part of slytherin house culture you’re a slytherin you know sign language because if you don’t chat with the mermaids they get grumpy

this helps a lot of deaf/hoh students

this also gives slytherin the best grades of any house on all aquatic magical studies

the mermaids give terrible dating advice do not trust them

The most common mermaid dating advice, of course, being “Drown him”

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fuocogo

(DROWN HIM <3)

((HE’S SURVIVED THAT ALREADY))

Accepted

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reblogged
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nerdyfacts

Nerdy Fact #1517: “Hawkeye #19″, which is told largely in American Sign Language, was delayed for months in order for the series writer, Matt Fraction, to research and confirm with educators and doctors that the ASL used was completely correct.

[Image description: A series of four panels, three of which seem to be taken from a comic book and one of which has text in it.  In the first panel, a man in t-shirt sniffs his wrist. Next, a faceless anonymous figure demonstrates a sign starting near the head with fingertips closed then moving toward the head while opening fingertips, looks like it could be the sign for “sun”. Next, red and white text on black background explains, “Nerdy Fact #1517 “Hawkeye #19″, which is told largely in American Sign Language, was delayed for months in order for the series writer, Matt Fraction, to research and confirm with educators and doctors that the ASL used was completely correct. nerdyfacts.tumblr.com”

Um … okay … it’s great that the writer took all this time for consultation, and that the editors allowed him this time.   Except, why on Earth was the writer consulting doctors?  Doctors are not linguists.  And if they were hearing doctors then it wasn’t even their language.  I can see educators … if they were all DEAF people, and particularly if they were Deaf people who teach ASL to other people, and not just random math teachers or whatever.

ASL is a language, not a medicine or an assistive device.  It is simply not in the domain of things in which doctors will have any more expertise than any other random member of the public.  Just because certain differences in how bodies may function can fit into the medical field does not mean that all the things we do to adapt to these differences are necessarily medical in nature.

Next time, the writer needs to consult with Deaf native signers, perhaps with a particular emphasis on Deaf people who have been trained to teach ASL to others and/or Deaf people who have expertise in sign language linguistics.  It is not appropriate to revere doctors without background in linguistics as necessarily having expertise with the accuracy of ASL.

I hope that this is merely an error on the part of the person writing the panel and not something the series writer actually did.

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reblogged
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deaflepuff

I’m actually laughing right now because when I was trying to get to the link to show the source… it’s taking forever to open (and I still can’t get it). Yet the ASL related links, are so fast in opening. I’m thinking it’s my internet connection, nope! It won’t even open on my mobile phone.

Clearly, Spoken Language isn’t the BEST ONLY option for deaf/hoh children. Yes it’s unfortunate how people think spoken language and medical perspective is the best only option when in reality it’s visual language. People believe that Sign Language will ‘decrease language acquisition”  When in reality, it (ASL) flourishes tremendously and that individual. Giving the option of BOTH can be beneficial to a Deaf/HOH child/adult. Bilingualism is best too, Sign Language and English can be amazing. Focusing on Literacy instead of “becoming like a hearing person, learn to speak!” Many Deaf/HOH children feel isolated and are delayed within social interaction because of the many outings for speech therapy.  Also, many Deaf/HOH individuals I now don’t say “I am so thankful for my parents to teach me spoken language!” many say “I wish I knew Sign Language as a child because it would have helped me so much. Gain my confidence, social interaction, and understanding of my surroundings”

Also, our ears aren’t something to be a cure for and can be cured. No matter if we have the assistive technology, it doesn’t mean it “restores our hearing”. We will still forever struggle within the environment and surrounding. They assist but they do not “restore” what we don’t have. 

The List of Responses (Which will be updated regularly when there is more)

The responses have been added to the original post for easier access.

And here is the president of AGBell (should be Bad) Association of the deaf/hoh (see? no capitalization, no need!) “pays off” yeah for you hearing people. But what about us Deaf/HOH ? Where’s our “pay off?” we get the “Struggle and exhaustion” 

What the hell does “decrease language acquisition” mean in that sentence? If someone learns to use ASL, they’ve learned a language??? They already got one???????? Is this some bullshit about verbal language being the only communication that matters? -_- I’ve said this about autism before, but people wanna go on and on about how like 70% of communication is non-verbal or whatever until they meet a non-verbal person and then verbal communication is literally all they care about. :/

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reblogged
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aslfan

You can solve a lot of ASL syntax problems, if not most, using five simple tricks.

I found this here 1 First: Learn to start at the beginning. In English the speaker often puts what they feel to be most important first, no matter where it occurs in time. “I went to the store after I ate breakfast and drank my coffee.” In ASL you start at the beginning. >> Breakfast eat. Coffee drink. Store go. 2 Second: Once again the English speaker puts what they feel to be the most important thing first and the next most important piece of information last and miscellaneous information in between. Speakers of English will tend to feel these really are the important things. However it is interesting to note that every language differs on the things it (and its speakers) considers important. Ownership is very important in English and stressed at every opportunity while in Spanish you do not say “My arm” you say “The arm”. And there is at least one language native to the Americas where it is considered improper to use the word “I”. Thus you would say “This man,” or “This woman” and speak of yourself in the third person. In English speaking of yourself in the third person is considered immature. ASL has its own priorities. In English you say, “The wedding took place in a small church in Pittsburgh.” In ASL you start with the largest item and work down to the smallest. >> Pittsburgh small-church wedding finish. 3 Third: In English it is often difficult to figure out exactly what is being talked about. Often what the speaker thinks is the most important thing is not treated the same in ASL. English always tends to treat the person who does the action as though they are the most important element – “She held the small white gloves close to her chest.” In ASL it is easy. It is the first thing talked about – It is the topic and it starts the sentence. The person being discussed is placed further down the chain of importance. >> Gloves, small, white, held-close-to-chest (one sign) she (If it is not already understood who is being talked about.) 4 Fourth: In English in order to construct a proper sentence you constantly have to refer to time (using tense, past, present, future) place, and person, in each sentence. English is one of the most repetitive languages in the world. It repeats information over and over again. “He walked slowly down the hill. It was steep and he did not want to hurt himself. He carefully watched where he stepped.” In ASL once you establish time, for instance in the sentence above it is the past, it remains the same time (Say yesterday) until you change it. You don’t need to keep using time indicator such as “ed” “was” “did”. And the person you are talking about remains the same until you change them, and the place remains the same until you change it. Thus you don’t need to keep referring to “him, he, his”. Nor do you have to refer back to the place, in this case the hill, with the pronoun “it”. It does not matter how long you talk about them or how many “sentences” you use. “Hill he walk (show slow careful walking with the sign “walk”) Hurt want not. Use the sign “see” with both hands to show how he watched. As you can see 7 signs and 1 head shake replace all the words in English, five of which are pronouns. 5 Fifth: Remember that you don’t have “I” this and “I” that in ASL. It is assumed you are talking about yourself unless or until you specify otherwise. Other people may have other methods. These are the ones I always found most helpful.

  (DONT RE-POST IT SAYING IT’S YOUR’S IT’S NOT! This is to help all not to take advantage.)

People sometimes insist that ASL “has no grammar” or “has no verb tense” but that’s not correct.  It DOES have grammar, it DOES have rules, it DOES tell you when things happen (present vs past, etc), it’s just that it doesn’t hit people over the head all the time with the exact verb tense conjugation at every second.  Not all languages do that the way English does.

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natalunasans

the *way* that spanish and french (and the rest of the latin language tree) are "more highly inflected" than english definitely hits you over the head with verb tense, subject of the verb, as well as gender of most nouns/ adjectives/ articles/ pronouns. i don't know what is the official way to explain this, but i feel like ASL has a whole other way of being "highly inflected"... since you have (as an integral part of the functioning of the language, not something added on) the body language putting whole complex sets of feelings and context into the words... (sorry again about terminology, i'm a polyglot not a linguist) @reallyginny you might like the tips in the OP

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ozymegdias

okay, serious question here

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natalunasans
andreashettle:
deafine:
andreashettle:
meganphntmgrl:
are there any forms of sign language accessible to people with missing/disabled hands, dyspraxia, etc?
I have been thinking I should probably take up signing as a basic communication tool (especially since I was originally taught Signing Exact English, which I later learned is basically a forceful imposition of spoken/written English grammar on ASL, which, I’ve read, not only slower/more cumbersome than ASL but kind of disrespects the fact that ASL is a perfectly valid language in its own right), but one of the reasons I did as badly as I did learning it as a child is that my left hand can’t move very quickly or dextrously due to some nerve damage going on there. I can’t even snap my fingers with my left hand, let alone do fine interpretive movements with it, and that messed with my ability to sign clearly. I honestly don’t even consider my left hand disabled in my daily life (though with this in mind I probably would if I were d/Deaf), but if that alone is enough to cause trouble with signing, how much trouble would someone with even more issues in one or both hands have trying to do it?
I’m not trying to slam sign language as a whole, but I feel like as an accessibility tool it’s still rather inaccessible to a lot of disabled people and I’m trying to figure out a workaround here.
The situation of people who need or want to learn sign but have difficulty moving their hands in certain ways is a challenging one. And can be frustrating.
But the problem is, ASL (and the many other signed languages used around the world) are NOT “accessibility tools”.  They weren’t invented by people who sat down one day and said, “Hey, let’s invent a tool that makes it easier for deaf people to communicate!”  It’s not like when someone invented PECS or other approaches to Alternate or Augmented Communication.  Signed languages all EVOLVED probably more or less in the same way that spoken languages did. At various points and places throughout the past few centuries of history, Deaf people were thrown together (for example, at schools focusing on their needs) or came across each other in some other way and started using gestures with each other, because how else were they to communicate? Then more deaf people came along, including younger deaf people, and emulated some of the more commonly used gestures but then gradually added their own more sophisticated and abstract elaborations and rules and so forth.  And in whatever number of decades it takes, there is a language with a community of people using it.
The youngest known language in the world is probably Nicaraguan Sign Language, which is so new that linguists have literally been able to actively witness and trace the entire history of the language from when deaf children were first placed together in a deaf school there until now to see how deaf children “inherit” the language from their older classmates, with each new younger cohort of students doing increasingly more sophisticated things with the language so it gradually evolved through the years from crude gestures to something as finely nuanced and sophisticated as any spoken language in use.  And we can guess a similar process happened for other signed languages. 
So, sadly, no, there isn’t really a universally agreed upon way for people without hands, or with difficulty using their hands, to adapt signs so they can express themselves in a signed language.  And this is the case for all the same reasons why spoken languages don’t really have universally agreed upon adaptations for people who can’t control their mouth muscles well, or can’t use their voice.  Deaf people as a community, unfortunately, are not any more sensitive to disabilities (other than deafness, of course) than the general hearing public.  The earliest deaf people (some of them still young children!) who got thrown together and were just trying to find a way for themselves to express and be understood by others probably weren’t usually thinking, “But what if I didn’t have the use of my hands, how would I do this then?”  They were just muddling through the best they can, trying to create something that works for them and the people they see every day.  
That said, one-handed signing can be more or less understandable. Many signs are symmetrical (both hands are shaped and move the same way), or else one hand remains still holding one of a limited range of hand shapes (a flat hand for example) while the other hand does something more complex.  So you can get by with just one hand doing the complex things while the other hand either isn’t used, or else is used “as is” without reconfiguring it to any other handshape.  I know this is no help for those who cannot use either hand well, but a person with full range of movement in one hand I would think should be able to learn to sign well enough to be understandable to most deaf people most of the time.  At one point, I was friends with a hearing young woman who was paralyzed on one side and had difficulty speaking–she and I communicated with sign language, one-handed on her part.  
Or if a person can move their arms but does not have fine motor control over their individual fingers (for example, people with certain types of spinal cord injury) they can still emulate the movement of hands/arms even if they cannot form all the various hand shapes they need.  Not all signs would be clear this way, but a limited range of signs might be.
I know this isn’t the ideal answer you would have liked to hear.  People who cannot sign would be pretty much in the same position as people who cannot speak–they might need some kind of alternative or augmented communication tool … probably something that actually WAS invented (or that could some day BE invented) precisely with their communication needs in mind.
It sucks.  I have known people who for various reasons have difficulty using their hands (or can’t use them), and I, too, wish there were an easy universally-agreed upon away to adapt signs for their use, because that wouldn’t only help them it would also help me as a deaf person with understanding them.  (I work at a cross-disability organization, so I encounter people with all kinds of disabilities frequently.)  But although a particular deaf person and a particular person with hand-related disabilities could perhaps invent something together for their own use, other people wouldn’t know all of the adaptations that they invent, so it wouldn’t be a universal communication system.
I think what andreashettle said is lovely, but I do want to add a couple things– I have several close friends with CP that impacts how they sign. And one of the guys I know was quite difficult to understand… initially. The more I got to know him and became familiar with how he signed, the easier it was. I might ask for clarification once in a while, but it’s do-able. For others, things like CP are noticeable but not an impediment to the conversation– I might notice it in the same way I can almost always tell if someone’s a native signer, or if somebody is hearing.
Additionally, I had a class last semester where one of the graduate students came and lectured for that class period– and he did not have his middle or index fingers on either hand. Nonetheless, we all understood him. One thing I noticed was that he only fingerspelled when absolutely necessary– names, locations, etc. Otherwise, he found a different way of saying it.
I think the key to take away here is– don’t give up signing. It might be more difficult, and people may need more patience with you, but you can do it. One of the lovely things about ASL is that it IS flexible in how you can say things. If fingerspelling is difficult, try learning a different way of saying what you want. One handed signing is perfectly acceptable as well. And the more familiar someone becomes with you, the easier it will be for understanding too.
Reblogging for added, important points and message of encouragement from deafine.
True, I’ve known a few deaf people with cerebral palsy, which can impact how a person signs.  And gradually others can learn to get used to it, similar to how some hearing people can gradually learn to become more accustomed to how a person with a speech disability talks.
Tagging meganphntmgrl because I just came across a comment on a sign language tutorial site that addresses a similar issue, see their “FAQ” from a student who is paralyzed on one side (which I realize isn’t exactly the same as your situation, but lends more credence to the idea that you CAN eventually learn to be understood if signing all one-handed.  And if you can sometimes use your other hand for a few things, well at least it shouldn’t be any harm!):
http://www.handspeak.com/lesson/index.php?id=5
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