A drug such as methylphenidate that blocks the dopamine transporter would be expected to
A) reduce the likelihood of activation of other neurons.
B) impair dopamine neurotransmission.
C) increase synaptic levels of dopamine.
D) decrease synaptic levels of dopamine.
E) aggravate the behavioral symptoms of attention-deficit/hyperactivity disorder.
Answer: C
Rationale: A drug such as methylphenidate that blocks the dopamine transporter would be expected to increase synaptic levels of dopamine.
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