Maria believes that high doses of caffeine speed up a person's reaction time. In order to test her hunch, she has five friends each drink three 8-ounce cups of coffee and then measures how quickly they are able to push a button when a tone is sounded. What is wrong with Maria's research strategy?

Question

Quizplus · Accepted Answer

Maria's research strategy lacks a control condition, which means that there is no way to compare the participants' reaction times to a group that did not consume caffeine. This makes it difficult to determine whether caffeine actually had an effect on reaction time or if other factors were at play.

Maria Believes That High Doses of Caffeine Speed Up a Person's