Being left handed or right handed is a natural development every individual catches on to at a certain age and according pediatrician (Laura Jana), most children start to show a preference for either their left or right hand at about 2 or 3 years old but can develop a preference as early as 18 months old. Most people feel that being right handed is an automatic adjustment that being right handed is correct and being left handed is viewed as a negative factor, in a retrospective study on decedents; scientist have solved the reason being that left handedness can reflect in a negative outcome. In researchers’ study (Marcel E. Salive, MD, MPH, and Jack M. Gurlnik, MD,PhD) they found that the average death rate for left-handers was 9 years lower …show more content…
A separate analyses for males and females also revealed a 14 year difference in age of death, as men are more likely to be left handed than women (9.1% vs. 5.8%, Marcel E. Salive, MD, MPH, and Jack M. Gurlnik, MD, PhD). With this outcome, it has become doubtful on differential mortality as the explanation for the population distribution of handedness; an earlier report that stated left-handed people are at higher risk of nonfatal injuries did not present mortality follow-up according to laterality. The simulation of the study before assumed no difference in mortality between left and right handed people, the relatively lack of left handers at the oldest ages explains the reported lower mean age at death for all left handed decedents compared with that for right handed decedents. However the main factor was that lower mean age at death in left handers implies nothing related to their risk of death (Halpern and Coren data). Although left-handers are a younger-aged population, and it is well established that a greater proportion of deaths at younger ages are injury
“If her right eye was blackened and she was beaten mostly on the right side of her face, it would tend to show that a left-handed person did it.” (Lee 238) “[Tom Robison’s] left arm was fully twelve inches shorter than his right, and hung dead at his side.” (Lee 248)
“‘Sinister Children’” was the title psychologist Theodore Blau gave to left-handed children in the late seventies, due to their over abundance “among the academically and behaviorally challenged” and their greater vulnerability to obtaining mental diseases later in life (1). This condescending view on the left-handed population has existed for centuries. The word sinister itself comes from the Latin word sinistra, meaning left hand. In the article “Sinister Minds: Are Left-Handed People Smarter?,” written by Maria Konnikova, a psychologist from Columbia University, she explains how these outdated theories about the intellect of the left-handed community are wrong. In fact, the author elaborates how left-handed people may have higher brain abilities compared to the general population due to the
At the time present time of referral it was evident Monti displayed impaired neuromusculoskeletal functions involving the left upper extremity including his range of motion, strength, and his increased muscle tone. Monti presented with left hemiparesis and preferred hand positioning was fisted. Additionally, Monti displayed difficulties with gross motor skills including bilateral integration, crossing midline, balance, and completing reciprocal movement patterns. He presents with left side visual neglect impacted his ability to navigate and engage in play activities. Monti displays a difficult time organizing and motor planning age appropriate gross motor activities. Monti appears to be very guarded of the LUE during play activities becoming completely emotional dysregulated
Ioffe, M.E., Chernikova, L. A., Umarova, R. M., Katsuba, N. A., & Kulikov, M. A. (2010). Learning postural tasks in hemisparetic patients with lesions of left versus right hemisphere. Experimental Brain Research, 201(4), 753-761. Doi: 10.1007/s00221-009-2091-z
According to Oyetunji, Ong’uti, Bolorunduro, Gonzalez, Cornwell, & Haider (2011) , females of 65+ years are 47% less likely to die from injury in hospital than males, however they are 79.6% more likely to suffer from injure. As females have a longer life expectancy than males it is understandable why this occurs. Attributing factors to the high likelihood of an elderly person suffering from a traumatic event are the cardiac, respiratory and neurological deterio...
On 11/17/2015, I wore an arm brace to replicate an amputee that had lost his/her right arm at the shoulder joint. This was to replicate a loss of a dominant arm – the right side. I spent 6 hours with this condition and will report my findings in this report. I lost my arm in a car crash after it was severed and crushed my right arm. Most of my arm was beyond repair and had to be amputated, and I had to learn how to live without 2 hands. There are many reasons why amputations are required.
Almost Ten percent of the population is left-handed. Growing up being left handed has forced me to adapt to situations that were simple for a right handed person. In my early childhood, I was forced to use my right hand when I would use a computer mouse. When it was time to write in our notebooks I was always aggravated with the metal spiral rubbing against my hand in my notebook. Once I reached high school, the desk was another change I had to adapt to; the desks were made for right handed people. It allowed them to rest their elbow while writing, Left-handers do not have an elbow rest. Left-handed people are struck with problems all around the world today in ways of non-compatible product design, forced right handed learning, and receiving
The human brain has two hemispheres that are divided into the left and right hemispheres. If one of the two hemispheres is damaged the communication between the corpus callosum may be completely blocked. As a result, total control of one hand may be lost resulting in Alien Hand Syndrome. Once lost, regaining full communication between the two hemispheres is nearly impossible to restore. There was not much known about Alien Hand Syndrome when it was first discovered. Two questions that most researchers had upon the di...
One in 10 people reading this is left-handed. There are nearly 34 million of us living in the United States, and about 500 million in the world. Throughout history, though, lefties have been looked down upon.
However, the frequency of left-handers does not exceed 30 percent in any traditional society, which suggests that the environment does not play that big of a part in the determination after all (Faurie, 2004). What was compelling to me was that various environments have such different outlooks on left-handers to this day. The environment may not cause left-handedness, but it tends to shape how left-handers are perceived nonetheless. In some Islamic countries there are laws against using the left hand in public (Mandel, 1999). Basically, it is said that the right hand is designated for eating purposes and the left hand was used for removal of
Mastering fine motor skills is a very important process needed for physical and cognitive development. It is during early childhood that most children develop these skills, however there are many children that do not. A young child’s fine motor skills are developed through a vast array of activities that aide the child in doing little things such as grasping a toy as an infant, and buttoning buttons as a toddler or tying shoes when they are a preschooler. Fine motor development is the development of the small muscles in the hands and fingers. Many crucial daily activities depend on strong motor skills, such as writing, using eating utensils and getting dressed, among other things. Without fine motor skills a child will have difficulties preforming
Did you know that approximately 10% of humans are left-handed? If there are 7,000,000,000 people in this world, then about 700,000,000 people are left-handed: a difference of 6,993,000,000 people. I should mention that I contribute to that ten percent. Being a lefty is almost equivalent to a person with recessive eye colors such as blue, hazel, or green. Just like eye color, the rate of southpaws can vary according to culture, gender, country, etc… As an example, most left-handers tend to be males. Left-hand dominance has surprisingly been very consistent throughout 500,000 years, staying at a constant rate of ten percent. Researchers have found, for example, by examining tools and bone density, that Neanderthals also favored their right hand. If the world is mainly filled with right-handed people, why does left handedness exist? The history, benefits and disadvantages of
According to Wilkinson (2013), the left side and the right side of the brain have functions that provide different responses. The functions of the brains increase, as one grows older. The more a person learns, the more the brain functions increase from the left to the right side of the brain. The main function of the brain is making decisions and controlling one’s emotions.
Furthermore, some of these factors have warning signs that can be avoided and interrupted to avert any casualties. In addition, suicide cases can vary due to age and gender with males being more proficient in suicide, while females attempting suicide at a higher amount. To conclude, it is important to learn warning signs in victims to prohibit any further damage and to stop suicides from
According to Genetics Home Reference, about 12% of people in the world are left-handed (Reference, Genetics. 2015). This number varies in various cultures. For example, 13.1% of people are left handed in Germany whereas only 2.0% of people are left handed in South Korea (LeftyFretz. 2017). Right handed people have dominated for over 500,000 years and they continue to out-number left handed people. (Siowfa15. 2015). Evidence has proven, by examining the tools used as well as the cave art, that the Neanderthals preferred using their right hands.