Dr. McGlynn is conducting a study on the effects of exercise on reaction time. He allows
subjects to exercise strenuously for either 0, 10, or 20 minutes. Next, subjects are seated at
a table containing a red push button and a yellow light.
Each subject is asked to push the
button as soon as he or she sees the light flash. Dr. McGlynn measures the time it takes
each subject to push the button after the light is lit. The control group in this study
a. did not exercise.
b. exercised for 10 minutes.
c. exercised for either 10 or 20 minutes.
d. exercised for 0, 10, or 20 minutes.
e. exercised for 20 minutes.
a. did not exercise.
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Children and adolescents from immigrant families are
A) more likely than their agemates to commit delinquent and violent acts. B) the fastest growing sector of the U.S. youth population. C) more likely than their agemates to have early sex. D) more likely than their agemates to miss school due to illness.
The nervous system is made up of cells called ______
a. somas c. axons b. neurons d. synapses