With drug use, ___________ are seen in dopamine D1 receptors, which cause excitation and facilitate behavior, and _________ are seen in dopamine D2 receptors, which cause inhibition and suppress behavior.
a. increases; decreases
b. increases; increases
c. decreases; decreases
d. decreases; increases
Question 2
A substance that is a positive reinforcer:
a. increases behavior by adding a positive reward.
b. decreases behavior by adding a positive reward.
c. increases behavior by taking away something bad.
d. decreases behavior by taking away something bad.
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