Why use of cocaine , marijuana , or amphetamines but not alcohol might contribute to poor college outcomes posed another question .
为何可卡因、大麻或安非他明的使用而不是酒精可能造成了糟糕的学业结果向人们提出了另一个问题。
Dopamine is also linked to addiction ; cocaine and amphetamines stimulate the release of dopamine , which produces the characteristic " high " .
多巴胺也与上瘾有关;可卡因和安非他明能够刺激多巴胺的释放,从而产生那种特有的“兴奋”感。
The men with the highest iqs were nearly 50 % more likely to have taken amphetamines and 65 % more likely to have taken ecstasy , compared to those with lower scores .
与那些得分较低者相比,最高智商的男人近50%很可能服用过安非他明,近65%很有可能采取摇头丸。
The contest between athletes and scientists was sparked in 1959 when gene smith and henry beecher , at harvard university , showed that short-distance swimmers who were given amphetamines did indeed swim faster than those who received a placebo .