I am very skeptical of this.
Eliciting a reflexive response (by poking or pinching a patient) is a wonderful way to tell if the patient is comatose, or if something else (such as a psychogenic disorder is happening). It can, however, be faked. I highly doubt that the OP truly didn't utter a sound. Profoundly deaf people yell. People with expressive aphasia and even global aphasia still make a noise.
Even people without a freaking larynx make a noise (it is a guttural grunt) but they still make a noise. And they are actually incapable of speaking (physiologically speaking).
Someone who is pretending would be just about the only person who wouldn't make a noise.
I'm not saying the OP is trolling us but I don't think we are being told the truth.
Multiple personality disorder or not, it is a human reflex to vocalize in response to pain.
AND as to the claim that she just learned that a voice makes a vibration in one's throat...bullshit.
Firstly.. Allow me to clarify. Not truly no sound, but no vocal sound. I gasp, I can make non vocal mouth sounds. My apologies for not being specific. In fact, I have quite an arsonal of non-vocal sounds that I do use to get someone's attention, and even communicate a few basic things with people who hear.
I'll even admit to occasionally forgetting for a moment that the "CHHT CHHT" sound I use to grab attention doesn't work on my Deaf friends, and I feel extremely dumb for a moment when that happens.
I knew that voice is vibrations. I knew that if I were to put my hand on somebody's throat, I would feel their voice. What I didn't know is that the person could feel that INSIDE their own throat. It was more of not realizing how sensitive the inside of a person's throat is. It's just something I never gave any real thought to. Unless something has gone wrong, I don't feel my blood moving, or my kidneys working. I just assumed that unless something has gone wrong, you wouldn't feel your larynx and vocal cords working.
I am telling you my reality. If you don't believe it, I won't hold that against you.
I'll be the first to agree that I can't actually prove any of it, multiplicity is a subjective experience, and yes, mutism can be faked.
The question is... What would be my motive? I'm not seeking anything from anyone here aside from perhaps some casual friendships. If I was going to lie to make friends, I could certainly think of lies that would be far more effective, far more relevant, and far more believable.
Of course deaf people make sound. You don't need your ears to make sound.
Likewise, I don't need a voice to hear. I'm not sure where that part of your response was going, I might have missed something there.
I am telling you the truth. I can't prove the subjective experience of multiplicity. If you choose to believe me, great. If you choose to remain skeptical, my life doesn't change. I have no motive to lie to you, and nothing to gain. I'm simply honest for the sake of being honest.
If I was a fake, why would I bother worrying about correctly handing the situation of being mistaken for deaf? For that matter, if I had reason to lie to you, why wouldn't I just claim to be late deaf? How would you know from way over there across the web?
I have interest in being friends with the Deaf community. I know plenty of hearing-speaking people who are also friends with the deaf people I have become friends with. Why would I bother faking muteness, particularly with people who wouldn't hear me if I did speak?
I'm just saying, if somebody would want to be deceptive, the combination of muteness and multiplicity sure is a tall order to choose as the deception.
If you don't believe me, that is ok. I don't gain or loose anything in either case.
I will still always be honest with you to the best of my ability, and if I keep something from you for privacy reasons, I would say so instead of making something up.
I'm also not here to convince people multiplicity is real. Questions were asked, I answered them honestly.