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A researcher is analyzing whether cardiovascular workouts increase an individual’s reflexes. She randomly assigns half of a study’s participants to complete one hour of cardio every day, while the other half do not perform any exercises. Over a period of two months, she records individuals’ performances on reflex tests. Which of the following is an accurate statement about this experiment?(1 point) Responses Elite athletes would be an appropriate population for this study. Elite athletes would be an appropriate population for this study. The independent variable is the reflex test. The independent variable is the reflex test. The dependent variable is the individual's performance on the reflex test. The dependent variable is the individual's performance on the reflex test. The findings of the study could prove that athletes have better reflexes. The findings of the study could prove that athletes have better reflexes. Skip to navigation

1 answer

The accurate statement about this experiment is: The dependent variable is the individual's performance on the reflex test.

In this experiment:

  • The independent variable is the cardio workout (whether or not the participants complete an hour of cardio each day).
  • The dependent variable is the performance on the reflex tests, which is what the researcher is measuring to see if it changes as a result of the cardio workouts.

The other statements are not accurate for the following reasons:

  • Elite athletes may not be the appropriate population if the study is intended to understand the effects of cardio workouts on reflexes in the general population.
  • The reflex test cannot be the independent variable, as it is the outcome measure affected by the independent variable (the cardio workout).
  • The findings of the study cannot prove that athletes have better reflexes since the study's purpose is to analyze the effect of cardio workouts, not to compare athletes to non-athletes.