QUOTE (BillTheEditor @ Oct 20 2006, 01:46 PM)

Nobody is ambidextrous?

There’s no option for multi-dominant either. I write with my right but throw with my left. I use the mouse and trackpad with my right most of the time but, spinning clockwise is a lefty thing to do and I can’t spin counter-clockwise to save my life. I can’t use a toothbrush with my left but I prefer scissors with my left (when they are available). But I wouldn’t consider myself amidextrous at all since some things I do have a really strong preference for.
QUOTE (KateGladstone @ Jan 18 2007, 07:35 PM)

Biologists have located the handedness gene. (See below for references.)
In humans/chimpanzees/other great apes, it inhabits chromosome 12 —
specifically, a location called 2p12-q11.
This gene works in a rather unusual way:
although getting one or two copies of the gene's dominant allele ("R")
produces right-handedness, getting two copies of the gene's recessive
allele ("r") does NOT produce left-handedness —
instead, getting two recessives ("rr") causes random assignment of handedness.
"RR" —> a righty
"Rr" —> a righty
"rR" —> a righty
"rr" —> equal odds of becoming a righty or a lefty.
Article on the discovery —
http://tinyurl.com/yqtz42 Page about some human genes, including this one (first on the page) —
http://www.ncbi.nlm.nih.gov/Omim/getmap.cgi?l139900 Gene map for the region of chromosome 12 that contains this gene —
http://tinyurl.com/ypc5lgI just thought you might like to know.
That’s really interesting. Someone once asked me if I had any lefties in my family and, ding, my dad is a lefty. “There you go,” he said, “that’s where lefty tendencies come from.” Now I know what he was talking about. Definitely, I am not an RR.
QUOTE (ArtW @ Oct 9 2007, 05:34 AM)

Do you other lefties find it difficult to write with a fine or XF nib pen? For me, I can't use anything finer than a medium - the nib catches on the paper. Us lefties push the pen across the paper rather than pulling it as righties do.
No not really. I use the same 0.3mm pencils and XF pens. I find it helps to have a lighter hand to avoid that snagging.
QUOTE (konstantinos_d @ Oct 28 2007, 06:30 AM)

For our research we use the Edinburgh Handedness Inventory to determine the degree of handedness (all left-handers are not equally left-handers, the same stands for right-handers) and functional Magnetic Resonance Imaging to determine language lateralization after a series of language tests. Here you can find an example of the Edinburgh Inventory :
http://www.cse.yorku.ca/course_archive/200...hInventory.htmlI took that test and came out as ambidextrous but… that doesn’t feel right. Again, no option for multi-dominant.
QUOTE (tawanda @ Jul 28 2008, 09:55 AM)

Im a left underwriter. According to the book Drawing on the Right Side of the Brain, underwriters are not true lefties and will often do many other things with their right hand. This is true for me - I write left handed but sew and knit right handed.
The book says that hookers or overighters are true 100% lefties in that their brain halves are completely reversed (or something like that. Its been a while since I read it), and they do everything left-handed.
What are your experiences?
Interesting. When I write left, I’m a left underwriter. But then I chose that because the left overhand hook seemed like carpal tunnel syndrome waiting to happen and with a sprained right wrist, I didn’t want another bad wrist. It just made more sense to me. I never really understood left overwriters. Don’t your wrists and hands get cramped?