argument throughout the world of science is if the human preference for dominant handedness is determined by our family genes, learned behavior, or a combination of both.
For years, there has been much argument as to whether handedness is a inherited trait through parents or a learned behavior from our environment. Recent studies have begun to show that handedness is more than just an a learned behavior. It was first thought that a single gene may contribute…
Within this particular study, the main independent variable is the presence of transcranial magnetic stimulation (stimulation of right posterior parietal cortex cerebral hemisphere, stimulation of left posterior parietal cortex cerebral hemisphere, no transcranial magnetic stimulation) and the main dependent variable is the handedness (right or left) when performing unimanual movements.
This study was conducted on participants that were selected based on their gender and handedness. The first…
December 12, 2015
II. Some may wonder why they are left handed versus right handed, there are a few different theories of why this happens.
A. The first example deals with the hormones in the body.
2. Nervous System and Hormones
B. Next, some have found that the reason people may be left handed instead of right, is due to genetics.
2. Identical Twins
Handedness is dominance of one hand over the other , or the
unequal distribution of fine motor skills between right and left
hands. It refers to the tendency of humans to be more dextrous
or skilled with one hand over the other.
By self report the rates of right , left and mixed handedness are
56.1%,26.3% and 17.5% respectively. The rate of handedness
conversion is 2.7% to 11.8% in prior studies based on the total
population including innately right handed people. The rate of
One of the most prominent things that I have realized from my first month of college is the importance of all the small things. Details have been essential for everything and everyone I have come into contact with, ranging all the way from what assignments I have due, to the hours of the dining halls. These first weeks in my freshman writing class we have held discussions on the most random—and what I believed to be at the time—irrelevant subjects. These discussions were just the opposite. After…
After reading a few essays by three different groups of people: The Doctors, the Nurses and the Patients. People hold different styles in almost every aspect in life such as types of music, clothing, colors, books, and films. So when it comes to different writing styles, then one can agree with that also. One just never thinks about it and with people having what they think is “good’ personal writing. Good personal Writing should include humor, graphic details, things I can relate to, and not…
The pencil grip is a low- tech assistive technology for children and adults who struggle with writing and correct pencil grip. The device can fit on pencils, pens, crayons and all writing tools and has been said to be “easy to use and comfortable”. The Pencil Grip increases comfort, teaches proper hand positioning, and improves control. Its ergonomic design also provides relief of hand fatigue and pain. Both right handed and left handed individuals can use it. Students place their fingers on…
Handedness and Cognitive Development
My research topic is Handedness and Cognitive Development. This study is to locate the major differences in psychological, personal and physical changes of the right and the left-handed people and its– effect on their personality and way of living. Despite the right is considered as good and left is considered as bad, and also people try changing their children’s handedness from left towards right under religious perspective, researches have proved…
in today is that against the left; so inconspicuous is it, that most never realise its existence. Most would sneer, “how can there be discrimination against left? It’s just a direction, a handedness, an adjective,”, but ‘most’ are the unwittingly biased majority. The word ‘left’, bears three direct meanings. When facing North, it refers to the West side. In the political sense, left, left-wing, and leftist all refer to someone with radical, liberal political…
them to their weaker side or force them to hit into the wind or toward the longer field of a ballpark shorting out their power. Why is this not more prevalent? Why is it such rarity in any sport to see an athlete strive for a decided advantage like Venditte?
What this says to me is that if you start young enough and are coached in this direction, you can learn to be ambidextrous and to perform at a high level.
Why most humans have a dominant hand and why most of them are…