One would expect groups that find themselves shunted toward the bottom of the socioeconomic hierarchy to have low serotonin.

Is there anything from your findings suggesting this to be the case and, if so, what would a low serotonin personality look like?

Studies have shown that genes and organic factors like frontal lobe impairments, low serotonin levels and dopamine receptors are highly correlated with criminal behavior.

Low serotonin function is associated with alcoholism, leading to speculation that increasing serotonin function could decrease ethanol consumption.