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Post by healthy11 on Sept 23, 2012 20:53:04 GMT -5
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Post by dihicks6 on Sept 24, 2012 9:35:06 GMT -5
I wish I knew why people are so fascinated with this. What difference does it make which hand is dominant? Sir Ray I believe is truly ambidextrous -- uses left hand to write and eat exclusively, bats, throws and kicks right-footed. Of course I'm sure I'll hear that he's 'confused,' not ambidextrous.....
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Post by healthy11 on Sept 24, 2012 10:13:29 GMT -5
I'm interested, because my son is the only lefty in our family, and he's the only one with diagnosed LDs.
Other statements from the above article say,
"...The 2007 paper by the group at Oxford identified a gene, LRRTM1, that they discovered in the course of studying children with dyslexia, and which turned out to be associated with the development of left-handedness" and "In pediatrics, we sometimes worry about children who manifest handedness too early, before their first birthday. The concern is that if a very young child seems to strongly prefer one hand, there may actually be some problem — perhaps some kind of neurological damage — on the other side. " (My son showed a clear preference for using his left hand before his first birthday.)
Left-handed people are only supposed to make up about 10% of the general population, but I have a good friend who is a special ed teacher, and she will tell you that there is a much higher number of lefties (especially boys) in her classes...
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Post by caniacfan on Sept 24, 2012 10:26:27 GMT -5
Hmmm. I'm left-handed. I was the only lefty in my family growing up and now am the only lefty in my family consisting of my husband and two kids. And I don't have any of these issues (at least so far!).
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Post by healthy11 on Sept 24, 2012 10:36:37 GMT -5
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Post by dihicks6 on Sept 25, 2012 10:35:33 GMT -5
Well then, let's hope Sir Ray only has half the issues we lefties are supposed to have! Have to say that both my left-handed brothers had some sort of learning issues. One I believe is/was dsylexic and the other you absolutely cannot read his writing (and he's a physician's assistant, LOL)!!! My other brother (one of only 2 siblings that are right-handed) has no issues, except of course for his Type A personality, HA HA!
There was one other boy in Ray's Pre-K class who was left-handed and his beginning writing was illegible -- even more so than Ray's. I'll have to check in with his mom to see how he's doing in kindergarten.
All I care about is Ray learning to read -- there's always other ways around writing, but reading is the foundation for everything.
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Post by hsmom on Sept 25, 2012 17:15:21 GMT -5
My husband is left-handed, but does not have learning issues or attention issues. In fact, I have not seen many who can focus on a problem for as long as he can. However, his handwriting is illegible; it was certainly helpful that he got into computers and word processing quite early.
My son did not have a dominant hand until after he entered kindergarten, and also was found not to cross the midline in first grade. He was diagnosed with sensory processing disorder and also has reading and math disabilities stemming, I believe, in part from SPD.
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Post by dihicks6 on Sept 26, 2012 8:02:20 GMT -5
Got a note from Ray's teacher that he needs to practice his 's.' I know why it's hard for him, because it's curvy and he still doesn't hold the pencil correctly, IMO. Conferences will be coming up soon, so we'll see. He does, however, have no problem in crossing the midline.
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Post by kewpie on Sept 26, 2012 13:24:00 GMT -5
My parents are both leftys and produced 7 right handed children only the last one was dyslexic. My moms only issue is she can't tell right from left and neither can I. My dad was also forced to write with his right hand so his writing from either hand is not great.  I once read a hypothesis that left handed people may be the sole survivor from a set of mirror image twins. Based on my family left handedness is definitely NOT genetic. I have two relatives who are left handed but they were adopted. |
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Post by hsmom on Sept 28, 2012 11:36:21 GMT -5
dihicks,
Have you tried having Sir Ray write with crayons, chalk (on construction paper), or pencils that are thicker than the ordinary ones that they use in school? My son still likes to write with thicker pens or pens with rubber grips near the end.
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Post by eoffg on Sept 29, 2012 8:24:30 GMT -5
The problem with;'children who manifest handedness too early, before their first birthday'?
Is that the neural wiring to control each hand, is still in an early stage of development during the first year.
Also the neural connections between both hands, is still being developed. Given each hand is controlled by opposing sides of the brain.
Where it will be developed from ongoing use and practice.
But handedness manifestation before the first birthday, means that the control of the other hand isn't being developed.
Which can also effect the development of neural connections between both hands.
Though being ambidextrous is a separate issue from hand dominance.
Where their is no reason why everyone couldn't develop equal fine motor skills with each hand.
But the importance of establishing dominance, is that it defines a 'master/slave' relationship.
The problem without this, is that every activity involves a cognitive debate, between both hands/ brain sides. Over who will carry out the action?
Though dominance extends beyond hands, to a dominant eye and ear.
Where having hand and eye dominance on the same side, is much better for hand eye coordination.
With master control for the hand and eye, being in the same side of the brain.
Dihicks, you said that he has no problem in crossing the midline? But their are actually 2 midlines?
While we are familiar with the vertical midline, between left and right.
Their is also a horizontal midline, that defines above and below.
Where you wrote he needs practice with 's', and that you know that it's hard for him, because it's curvy.
Which suggests that 'curved' letters are a particular problem?
The curve that forms the letter 'C', requires recognition of the horizontal midline, to mirror the upper and lower parts of C.
So that as we print C, we have a sense of the overall size of letter within the line space.
Where the height of the line space, is horizontally divided.
The first horizontal differential, is between an upper and lower case C c.
Where a C fills the line space horizontally, but c requires horizontal division.
Then within this horizontal division, c needs to be divided between its upper and lower halves.
But then if we come to the letter S,s ?
Where S is a c on top of a reversed c.
Which involves a combination of horizontal and vertical mid-lines.
While the vertical mid-line is divided by the left and right sides of the body.
The horizontal mid-line, is located around the bottom of the rib cage.
Where a common symptom of a horizontal mid-line difficulty ? Is a difficulty with doing activities with the hands, at a level below their rib-cage. So that even tying a shoe-lace, will require lifting foot up.
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Post by healthy11 on Nov 1, 2013 16:59:24 GMT -5
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Post by dihicks6 on Nov 1, 2013 17:25:56 GMT -5
Oh gosh, I knew it all along, LOL! Ever notice how many actors (and presidents) are left-handed -- there are many. In my family, out of 2 parents, 6 children and 17 grandchildren, 10 are left-handed, but no schizophrenia. Wonder if being above-avg creative has any relationship to this mental illness?
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Post by healthy11 on Nov 1, 2013 18:33:45 GMT -5
I'm glad there isn't any schizophrenia amongst all the lefties in your clan, dihicks! FYI, in the article I listed at the bottom of my original post, it talks about creativity and says, "Chris McManus, a professor of psychology and medical education at University College London, told Scientific American that left-handed people do not have a higher IQ than those who are right dominant; in fact, there is a slightly higher proportion of lefties that have dyslexia or a speech impediment. This, McManus says, is due to a fundamental difference in the brain structure depending on which hand is dominant. While lefties may have speech issues, left-handers' brains allow them to process language, spatial relations, and emotions in more creative ways — which is the reason there is a high percentage of musically and mathematically inclined lefties than there are righties."
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Post by lorij on Nov 2, 2013 7:33:34 GMT -5
I'm with Dihicks, what difference does it make? I'm a lefty, and take some things too personally, LOL! I've heard it all over the years. For the record, I was a gifted child, and am mathematically talented, but no real LDs, and mental illness (others may disagree, bwahahahaha!)
I do have baggage from dealing with a right handed world though. For example, I just realized that the picture on the new cool coffee mug I bought doesn't face me when I drink with my left hand. My husband is also left handed, but all of our children are righties. Go figure.
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Post by dihicks6 on Nov 3, 2013 16:34:34 GMT -5
Lori, the left-handed 2nd generation (nieces/nephews) are from one of my only 2 right-handed siblings, and the other two lefties come from my brother who bats, throws and kicks lefty, but writes (and I use the term loosely) right-handed. They made him change when he got to school.
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Post by eoffg on Nov 4, 2013 4:14:00 GMT -5
I heard a report today on research into Guide Dogs, that has identified that right pawed dogs are more effective, as left pawed dogs have far more distractability.
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Post by jisp on Nov 4, 2013 7:37:43 GMT -5
Just for the data....
My father is a righty. My mother is a lefty. My father is clearly dyslexic. I am a lefty. I am dyslexic. My husband is a righty and his parents and sister are righties and there is mental health issues on his maternal side. Of my three kids. My daughter is a lefty. My boys are righties. All three kids have some learning issues but the boys' learning issues are more severe than my daughter's. And the mental health issues seem to have hit my daughter and middle son more than the youngest. I have a feeling the genetics is a lot more complicated than we know and that just because there is a statistical correlation does not mean that this implies causation or linkage at a biological level.
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Post by dihicks6 on Nov 4, 2013 8:58:51 GMT -5
Oh yeah, forgot, one of my twin grands, the girl, is left-handed -- very much so, at 2 years old. Her brother is a rightie. So add another leftie to the list in my family, LOL!
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Post by healthy11 on Nov 4, 2013 9:15:51 GMT -5
dihicks, in the case of multiple births, I've read that handedness can be impacted by the baby's position in the womb, and whether they have as much room to move their arm around...Of my triplet nieces, two are righties and one is lefty.
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Post by keepthefaith on Nov 4, 2013 10:14:07 GMT -5
I read this late this morning; all over DD's reports it states "Left-Handed" - I never knew why.............I didn't put much thought into it.........I know a few left-handed women - all brilliant!
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Post by keepthefaith on Nov 4, 2013 10:15:49 GMT -5
PS she attended a Parochial school for K & 1 and nuns tried to have her change her script/writing to right-handed; it was very frustrating.
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Post by dihicks6 on Nov 4, 2013 11:32:14 GMT -5
Healthy, My gd Delly Anne, did have some issues -- she was breech and from 3 mos. on, has had PT for her right side -- it's not as strong as her left, but was mostly through her hips. You can hardly tell now, but she's still getting PT. Maybe that accounts for the handedness??
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Post by healthy11 on Nov 4, 2013 14:15:58 GMT -5
dihicks, it wouldn't surprise me in the least if your twin granddaughter's handedness was impacted by her fetal position.
Keepthefaith, I'm surprised that your daughter's parochial school still had nuns, because there are so few of them, and that in this day and age, they actually tried to switch her handwriting? Nobody at my son's first parochial school tried to switch him from being a lefty, but the teachers obviously used their own dominant hand to demonstrate printing to the youngsters, so most teachers position the paper and pencil for a "rightie" to copy. Little kids try to follow their teacher's example, and that can lead to more confusion. My son learned how to cut, albeit rather sloppily, with his right hand, because not every classroom had lefty scissors available. (I still remember when my son was in a preschool gymnastics class, and that instructor had foam mats with "handprints" painted on them, that were positioned on the floor to help teach kids how to do a cartwheel...I had to point out that my son was a lefty, and he could do a much better cartwheel in the opposite direction.)
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Post by SharonF on Nov 4, 2013 15:01:34 GMT -5
My brother and his wife are both lefties. Both are gifted verbally, one working in traditional PR and the other in corporate communications. Definitely neither is dyslexic in any way. Both were good at music (and my s-i-l at dance, brother at sports) but neither likes math very much. So I don't think they fit the stereotypes of left-handed people.
Our son is ambidextrous. Always has written with his right hand, but he bats left and had a strong left foot on the soccer field.
dd is right-handed **BUT** her left-hand grip strength is twice that of her right hand. So there are certain things she always does with her left hand, such as open jars and doors.
I've read many hypotheses about LDs and left-handedness. But I can't see a consistent causation or even correlation.
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Post by lorij on Nov 4, 2013 16:58:12 GMT -5
"I've read many hypotheses about LDs and left-handedness. But I can't see a consistent causation or even correlation."
I agree completely Sharon!!!!
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Post by healthy11 on Feb 10, 2014 20:24:14 GMT -5
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Post by healthy11 on Aug 17, 2014 20:23:36 GMT -5
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Post by healthy11 on May 1, 2017 19:43:48 GMT -5
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Post by healthy11 on Aug 13, 2018 20:10:01 GMT -5
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