Answer to Question #178409 in Psychology for Shaji

Question #178409

Several researchers want to study the effect of exercise on visual perception. Each decides to use a different method in their study. Researcher 'A' assigns participants to one of two groups, exercising for 10 or 0 minutes, and then records their performance on a task designed to measure visual acuity. Researcher 'B' decides to use the same task to measure visual acuity performance from professional athletes vs. college students who do not play a sport. Researcher 'C' asks a sample of students from a university to report the number of hours per week they exercise and then looks at the relationship between this measure and their performance on the same visual acuity task.

Expert's answer

  Influence of Exercise on Visual Acuity

  Physical exercise and maintain   a balanced diet are some of the natural ways of improving visual acuity.  In the context of exercise, it is mainly cardio exercise that is important and has positive influence on visual acuity of an individual. According to the research that was conducted, the strategy used by researcher B is likely to give more accurate results than the strategies used by the other researchers.  Generally, physical exercise increases blood flow in the retina and optic nerve, hence improving overall health and vision.  However, this effect is not realized instantly or after a short period of time hence rendering the strategy of researcher one less effective. On the other hand, researcher B’s strategy of comparing visual acuity between athletes and college students who rarely do exercise will give reliable results because the athletes who do exercise daily will obviously have better visual acuity as compare to college students. 

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