There have not been any studies with data on childhood intelligence, lots of subsequent data on adult health behaviors, and then a long-term follow-up for deaths. And only such a study could tell us whether it is these healthy behaviors that explain the link between intelligence and death.
目前还都不错。但是我们还没有掌握全部情况。有关儿童智力、成年健康行为的大量数据以及对死亡的长期跟踪还没有任何研究。而只有这一研究才能够告诉我们是否是这些健康行为可以解释智力和死亡之间的联系。