(a) Some research has shown that increased use of computers and other digital media canaffect eyesight and reaction times.A scientist wanted to test if prolonged use of a computer affected reaction time.The scientist tested the reaction times of 10 people under the same environmentalconditions.These people then used a computer for three hours.The scientist tested their reaction time again.Give three ways that the scientist could improve this method to determine if prolongeduse of a computer affects reaction time
Question
(a) Some research has shown that increased use of computers and other digital media canaffect eyesight and reaction times.A scientist wanted to test if prolonged use of a computer affected reaction time.The scientist tested the reaction times of 10 people under the same environmentalconditions.These people then used a computer for three hours.The scientist tested their reaction time again.Give three ways that the scientist could improve this method to determine if prolongeduse of a computer affects reaction time
Solution
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Increase Sample Size: The scientist could increase the number of participants in the study. A sample size of 10 people is relatively small and may not provide a representative result. A larger sample size would increase the reliability and validity of the results.
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Control for Variables: The scientist could control for other variables that might affect reaction time, such as age, health status, sleep quality, and caffeine intake. This would help to ensure that any changes in reaction time are due to computer use and not other factors.
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Include a Control Group: The scientist could include a control group that does not use a computer for three hours. This group's reaction times would be compared to those of the group that did use a computer. This would help to determine if any changes in reaction time are specifically due to computer use and not just natural variations over time.
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