A researcher did a study on the effects of an exercise program on children's attention at school. Half of the children got assigned to participate in a before school exercise program and half got assigned to a control group program that does not involve exercise. Which of the following is the independent variable (IV) in this study?
a. whether or not the exercise experience occurs before or after school
b. whether or not the child experiences an exercise program
c. the level of children's attention at school
d. whether or not children have prior experience with strenuous exercise
Ans: b. whether or not the child experiences an exercise program
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CT scanning is based on
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Hearing begins __________
Fill in the blanks with correct word
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