The observation that ________ is an effective treatment for attention-deficit/hyperactivity (ADHD) suggests that ADHD results from ________.
A) methylphenidate; understimulation of dopamine transmission
B) haloperidol; overstimulation of dopamine transmission
C) fluoxetine; a deficit in serotonin transmission
D) fenfluramine; overstimulation of serotonin transmission
E) methylphenidate; overstimulation of dopamine transmission
Question 2
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.
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