The article explained this through the lens of dopamine receptors in the brain. In people at the lower end of the IQ spectrum typically have a gene that breaks down dopamine quicker, leaving a deficit and lower function as opposed to normal people. If one has too much dopamine, they feel overstimulated, which serves as a biological bell curve; aiding the lower people from a “40 to an 80” but not nearly as much in other patients. It is with this knowledge that researchers like Farah believe that these drugs could serve as a field leveler for people from lower SES places; if distributed