Literature Review
The Causes of Left and Right Handedness
There are many theories posing the cause of handedness. Many researchers have debated these theories but are yet to have found an unambiguous answer. Even so, it has been found the vast majority of people, around 90%, use solely their right hand for tasks involving dexterity, indicating that only around 10% of the population are left handed and ambidextrous to some degree. Generally is more common in males than in females. Correspondingly, other primates also show strong tendency to be right handed. Vast ranges of testing techniques have been used to assess handedness. There are preference and performance tests, writing hand and self-report which are two of the most popular techniques. Several theories have been advanced over the years to explain the causes of handedness and, in particular, left-handedness. Reasons put forth by various researchers to try and explain these findings are genetics, such as inheritable traits,......
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Approximate Word Count: 1152
Approximate Pages: 5 (260 words per double-spaced page) |