Viagra, a medication that medically allows for improved erectile function, acts primarily by:
a) Increasing the level of dopamine, which is associated with sexual arousal.
b) Relaxes smooth muscles allowing increased blood flow to the penis.
c) Stimulating the amygdala in the limbic system.
d) Inhibiting the response of the serotonin system.
Question 2
All of the following people may refuse to be a subject in a research project except:
a) A patient involuntarily committed to a psychiatric hospital after being found not guilty by reason of insanity.
b) A prisoner convicted of a felony.
c) A college student required to participate in research as part of a psychology class.
d) All of the above may refuse to participate in research.
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