Question

Martina believes that high doses of caffeine can slow a person's reaction time. in order to test this belief, she had five friends each drink three 8 ounce cups of coffee and then measures their reaction time on a learning task. what is wrong with martina's research strategy

Answer 1

She has not used a control to compare her data with. She needs to change the amount of coffee and have one person being tested who hasn’t drank any so she can properly analyze the data. She also needs more test subjects because some people have naturally good reflexes.