The relationship between handedness and hemispheric dominance? By Isaac Somerton
This study was conducted to find a relationship between handedness and hemispheric dominance. The participants in this investigation were all year 11 students in psychology 1A/B at Greenwood College. The data collected by the survey sheet was put into a table then graphed into two separate graphs; one graph for left and the other for right hemisphere dominance. The results that were found rejected the hypothesis of there is a relationship between handedness and hemispheric dominance. It seems that majority of people are just right handed and left hemisphere dominant. The study is very limited due to the ample size and all the uncontrolled variables left in the investigation. This study can be criticized as very unreliable because of its lack to control variables. Hemispheric dominance means what side of the brain is dominant. The brain is split in two hemispheres right and left. Each one controls different things and they are connected by the corpus callosum. Since the left side controls the movement of the right side of the body and vice versa for the right hemisphere if the corpus callosum was to be cut your body would not be able to co-ordinate with itself. The left hemisphere of the brain is used for tasks such as speaking, writing and understanding language, mathematical and logical skills and controlling the right side of the body. In contrast, the right hemisphere is especially good at recognizing patterns and faces, solving puzzles, reading maps, art and music appreciation and controlling the left side of the body. Handedness refers to whether your left or right handed. So the aim is to confirm whether there is a correlation between hemispheric dominance and handedness. It is hypothesized that there is a relationship between hemispheric dominance and handedness because the hemispheres controls a side of the body so the hemisphere that’s dominant will determine which hand is...
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