Researchers want to examine the following traits of a new medication: the half-life of the medication in the body, effectiveness of the medication in treating symptoms,  and the rate of insomnia in users of the medication. Which of the variables require using a placebo during the tests? Select all that apply. A :    Half-life of the medication in the body because knowing they are taking the medication will affect how fast a patient metabolizes the medication.    B :    Effectiveness of the medication in treating symptoms because knowing they are taking the medication will affect how patients report the effectiveness.    C :    Rate of insomnia in users of the medication because knowing they are taking the medication will affect how patients report insomnia.

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Researchers want to examine the following traits of a new medication:
the half-life of the medication in the body,
effectiveness of the medication in treating symptoms, 
and the rate of insomnia in users of the medication.
Which of the variables require using a placebo during the tests? Select all that apply.
  • A : 
     
    Half-life of the medication in the body because knowing they are taking the medication will affect how fast a patient metabolizes the medication. 
     
  • B : 
     
    Effectiveness of the medication in treating symptoms because knowing they are taking the medication will affect how patients report the effectiveness. 
     
  • C : 
     
    Rate of insomnia in users of the medication because knowing they are taking the medication will affect how patients report insomnia.
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