Originally posted by ProfessorKenpo
I've found most people may be left handed or left footed, but are dominant right when it comes to techniques for some odd reason (and I'm hoping Scott Bonner knows the answer to this, it would be really interesting to know why). Clyde [/B]
I wish I could have thrown out some brilliant answer to meet expectations, but I don't have a clue!
So, I do the next best thing and consult with my wife. Since she's the one in grad school, she is much more up-to-date on psych stuff.
The old ideas about the brain working in hemispheres and hemisphere dominance (the cause of handedness) is proving too simplistic to explain everything. Handedness isn't simple or straightforward. Following brain dominance is the "lazy" way for the brain to figure out how to do things -- it's not a "preference" so much as a default pathway. Training can quickly override hemisphere dominance, and neural connections will be made for the "off" side that are just as strong as the ones for the "dominant" side -- just as fast and effective, more so if the off side is used more.
This is more true for gross motor functions than fine motor functions, and in martial arts we do gross motor functions. Also, different people have different degrees of handedness. Training can and often does override handedness. For most people, handedness is only a factor for fine motor functions (like writing). Then, gross motor functions (like throwing a baseball) are taught on the same hand that we write with, so we feel like we are "right handed throwers" when, if we had been taught lefty from the start, we would feel like "left handed throwers".
Martial arts taught from the right for most people will make them "right handed" even if they are lefty for fine motor skills. With few exceptions, people are no-handed when learning new gross motor skills. It's just them thinking "I can't do it as well 'cause I'm left handed" that may get in the way.
So, in conclusion, for gross motor skills, handedness is nearly illusory for most people. Few actually have brain dominance so hard-wired that it significantly affects gross motor skills. In any case, training overrides hand dominance quickly, so that almost immediately handedness is no longer a factor -- except in one's head.
On the other hand, I've heard of people who claim they are completely unable to do anything with their "off" hand no matter how hard they try, which means either that they are really good at psyching themselves out or they are among the very few that are so hard-wired for hand dominance that it continues to be a factor in even gross motor functions.
Peace,
Scott