no sense of the passage of time, gets obsessed over weird and small details, and suffers from both hyperfocus and an utter lack of focus, depending on the task

That... sounds rather like me. Hm.

arch supports

are evil, imho. Every foot doctor has insisted I wear them because I have flat feet, but they hurt. The more "supportive" a shoe is, the more likely it is to hurt and throw off my gait. I go shoeless whenever I can.

Or, in my case: Me, age 8 or so. Ask me, "I'm making this recipe that calls for 1/2 cup of flour, but I want to make three times the recipe, how much should I use?" and I could tell you to fill up the 1 cup measure once and the 1/2 cup measure once, or the 1/2 cup measure 3 times. Ask me what 6+7 is, and I'll most likely just pick some random number between 10 and 15.

I've also always had issues with writing stuff by hand, which has confused tons of tests. I've gotten better at it, but in elementary school, if you told me to write about something and gave me a piece of paper and a pencil, and then told me to write about something and gave me a computer or typewriter, the typed thing would show a much higher level of language usage than the handwritten thing would.

I've got dyscalculia, Connie. Can't speak for anyone else's, but I'd count it as a secondary condition, personally. Because I can't read maps, do higher math...

"Hey, this would be a nifty way to categorize people in order to stratify them and match them up with the hierarchical job system we've formed post industrial revolution!"

Don't. Even. Get. Me. Started.

Singed,
enthusiast-on-her-way-to-be-educated historian of the 19th century-among-others, and student of sociology who attends "Organizations and Society" class

I just realized, I don't actually add/multiply numbers; I've just memorized the answers to most of the problems. I cannot multiply anything above the 6's. 6x8? I have no idea; I'd have to work it out. Yet, I scored 640 on the math part of the SAT. I test well.

no sense of the passage of time, gets obsessed over weird and small details, and suffers from both hyperfocus and an utter lack of focus, depending on the task

That... sounds rather like me. Hm.

That sounds like ADD. t /notadoctor

It's sometimes more complex than just being too gifted to think in standard ways. I have a definite mathematical learning difficulty. I am practically innumerate, and not great even with mathematical concepts that don't involve arithmetic. I had four years of one-to-one math lessons, and I still can't calculate change. You can imagine what statistics classes are like for me. I'm also dyslexic (in particular, I read at about half the average speed, and the words move around on the page, although a green transparent overlay helps with that a bit), and borderline Asperger's (with all the literalism, poor social skills etc that goes with that). Yet I was always the first in my class at many subjects, I'm on course for a distinction in my MA (not easy to get, at all) and I have verbal reasoning capabilities that totally floored the psychologist who assessed me (which was only two years ago, incidentally).

But, yeah - it's definitely two sides of the coin. Neurological diversity is cool.

Hil, re writing by hand, hypermobility can cause issues with the motor skills involved with writing. I couldn't write by hand for years, still find it painful, but I can type for hours.

Twice edited for spelling. Not ironically.

I also utterly confused teachers my first few years of elementary school by being able to read several grade levels ahead, but being completely incapable of sounding out words. Ask me to spell a word that I'd seen written before and I'd have no problem. Ask to to spell a word that I'd only heard but never seen, and I wouldn't know where to start. Same thing with reading -- I read books by recognizing the shapes of the words, and I had a good enough memory that I could recognize the shapes of a whole lot of words. But a word I'd never seen before, I couldn't look at the individual letters and remember "every letter makes a sound" and figure out what it was. Eventually, I just got old enough that teacher were no longer focusing on the mechanics of reading and just didn't notice that I didn't read the "right" way. This caused a ton of problems when I got to high school biology and was confronted with a textbook full of words I'd never seen before.

That sounds like ADD.

What? There was a cat outside -- oh, hey, Antiques Roadshow is on. I ought to get that old oak table -- What? I'm supposed to be working? It's been three hours already? Oh.

Yeah. Well, you might be right.

Hil, re writing by hand, hypermobility can cause issues with the motor skills involved with writing. I couldn't write by hand for years, still find it painful, but I can type for hours.

Yeah, it was partially the physical issues, and partially that I'd just lose my train of thought because I had to concentrate so much on remembering how to form each letter.