In a double-blind experimental procedure
a. both the participant and experimenter know whether the participant received a drug or a placebo.
b. the participant, but not the experimenter, knows whether he/she received a drug or a placebo.
c. the experimenter, but not the participant, knows whether the participant received a drug or a placebo.
d. neither the participant nor the experimenter knows whether the participant received a drug or a placebo.
Question 2
In a medication trial, a participant with Attention Deficit Hyperactivity Disorder (ADHD) acted very relaxed and focused after trying a new medication that he believed would calm him down. However, the medication was really just a sugar pill. Given what you've learned in this chapter, which of the following explanations makes the most sense?
a. This would not have happened, because you have to have had a drug in order to feel its effects.
b. This could happen because the placebo effect is real and can result in actual physical symptoms.
c. The only way this could happen would be if the participant really didn't have Attention Deficit Hyperactivity Disorder (ADHD).
d. The participant didn't really feel relaxed and focused, but didn't want to disappoint the doctors.
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