Vervet monkeys were injected with drugs that either increased or decreased serotonergic activity. These experiments showed which of the following about the relationship between serotonin and aggression? Choose the correct option
A) More aggression is associated with less serotonergic activity
B) More aggression is associated with more serotonergic activity
C) Aggression is not affected by serotonergic activity
D) Aggression is influenced by high but not low levels of serotonergic activity
Ans: A
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