There's a difference between being dyslexic and being a bad speller. You can be a very bad speller, and still be an excellent reader. Some famous authors, such as F. Scott Fitzgerald, were notorious for this. To get a diagnosis of dyslexia, you need to have a problem reading, and we don't have the author of any of the letters in front of us to test to see what sort of reader he was.
Dyslexics have trouble parsing phonemes, according to the latest research I have seen; what that means in practice, for example, is that a dyslexic can know the word "hill," and the word "up," but when encountering the word "uphill" for the first time can't see intuitively (something that comes naturally to most people by age six) that it's a combination of two known words. A less severe dyslexic can develop the skill of parsing phonemes if it's taught to them. Severe dyslexics just have to memorize every word by rote-- and by sight and shape, in order to read with any speed.
This may not be what the research from Sweden suggests to Curious4; I've no idea, but the "parsing phonemes" theory is about 10 years old, and the most common one you'll hear in the US right now, at least IME.
Personally, I think it's a mistake to leap to any assumptions about Jack's character based on letters we can't say for certain he wrote. The police took them seriously at the time, because they were in the middle of a live investigation, and needed to use everything they had. We're playing a different game. And at any rate, the police didn't use the letters to build a profile; they used them to try to trace the author(s). If they weren't written by Jack, maybe they were written by someone who had information that would further the investigation.
Dyslexics have trouble parsing phonemes, according to the latest research I have seen; what that means in practice, for example, is that a dyslexic can know the word "hill," and the word "up," but when encountering the word "uphill" for the first time can't see intuitively (something that comes naturally to most people by age six) that it's a combination of two known words. A less severe dyslexic can develop the skill of parsing phonemes if it's taught to them. Severe dyslexics just have to memorize every word by rote-- and by sight and shape, in order to read with any speed.
This may not be what the research from Sweden suggests to Curious4; I've no idea, but the "parsing phonemes" theory is about 10 years old, and the most common one you'll hear in the US right now, at least IME.
Personally, I think it's a mistake to leap to any assumptions about Jack's character based on letters we can't say for certain he wrote. The police took them seriously at the time, because they were in the middle of a live investigation, and needed to use everything they had. We're playing a different game. And at any rate, the police didn't use the letters to build a profile; they used them to try to trace the author(s). If they weren't written by Jack, maybe they were written by someone who had information that would further the investigation.
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