81500379______Handedness (Autosaved)

81500379______Handedness (Autosaved) - HANDEDNESS...

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HANDEDNESS Handedness Name: Course: Institution: Tutor: Date: Handedness Abstract Handedness is typically dominance of one hand over the other or uneven distribution of fine motor skills between the right and the left hands. Owing to the unequal distribution of the motor skills, humans tend to be more dexterous with one hand over the other (Henderson & Pehoski, 2005). This is normally reflected in manual work, particularly the performance of everyday tasks like eating, writing and others. Such activities employ a large number of neurons in the brain and need tightly concentrated and specialized neurological wiring. Handedness goes hand in hand with the general preference of one side of the body over the other like use of the foot, the eye or ear. There are four types of handedness: left handedness, right handedness, ambidexterity in which an individual is capable of performing tasks by both hands and ambilevous in which a person is clumsy in using both hands, probably as a result of debilitating physical condition. Significance Having overviewed handedness, any rational minded person would ask how neuro- developmental processes might make individuals to prefer one side of the hand or body in their daily performances. It is also imperative to understand how neurological development contributes to the general structure and relationships like sexual orientation and behaviors (Wolraich, 2008). Empirical evidence has it that exposure to different levels of fetal testosterone is replicated to handedness. It has also been suggested that 2D: 4D ratio is linked to the number of androgens “in utero”. Such distributions of hormones during fetal development is instrumental in dictating not only handedness, but other related behaviors in individuals. For example, exposure to higher levels of fetal testosterons is attributed to greater probabilities of sexual promiscuity in adulthood. The significance of understanding such neurological developments
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HANDEDNESS cannot be overemphasized; parents can medically control the levels of hormones during pregnancy to avoid undesired characteristics in children in adulthood. Rationale The rationale of neurological development is also critical in explaining the hypothesised relationship between gender, handedness and 2d:4d ratio. As highlighted before, lower 2D:4D ration has been linked to male characteristics due to more androgens “in utero”. This implies that left handed males have lower 2D:4D ration in their right hands while right handed females have high 2D:4D ratio in their hands and the reverse is also true. In addition, the 2D:4D ratio also affects the sexual characteristics such as homosexuality and promiscuity of individuals (Balthazart, 2012). Exposure to fetal testosterone affects the length of the fingers, a feature that is attributed to promiscuity.
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  • Fall '15
  • AbdolnaserDaghighi
  • Business, Left-handedness, Handedness, Right-handedness

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