The test was composed of apparently:<p>Participants completed an online test to measure distinct aspects of intelligence, including planning and reasoning, working memory, attention and emotion processing.<p>-<p>The wights given to the categories is not certain. But emotion processing is probably an area they are lacking in which is why they chose those fields of study in the first place probably.
Note, regardless of the validity of this study I am confident that the vast majority (all) rocket scientists and neurosurgeons are smarter than *I* am. ;-)