Gene for memory and IQ gives students low grades
newscientist.com
newscientist.com
That was very good of the reporter to mention this possibility. That kind of issue always has to be evaluated when looking at new scientific studies.
http://norvig.com/experiment-design.html
It's an intriguing finding that should probably be looked at further in a different cultural context (is taking the SAT in America like taking the Taiwan college entrance exam in Taiwan?) and definitely should be looked at with a larger sample.
Did that quote stun anyone else?
'Tiny' implies a comparison. The only other thing to compare these effects with, would be more well-studied factors, such as nutrition, environment and sleep. And if effects such as those dwarf the effects of genetics... well that's just not something that I can recall ever being hinted at.
And this is almost always the case with these types of studies.
Perhaps employers could use this information: e.g. if a candidate fits a certain pattern, they could structure the interview process to be less stressful (to avoid situations where they may be passing up on some of the brighest people).
That could be also why really smart hackers tend to flock to startups, R&D/"platform" teams (as opposed to product development/customer facing teams) and graduate schools: ability to set your own schedule, greater say in setting the overall technical direction and timing/deadlines.