I'd like to see some research, but anecdotally the reaction time tests are overperformed on by people who are serious gamers.

I am absolutely wildly impulsive (and was even more so when I was younger), but when I took the reaction time test in college, I was playing counterstrike multiple hours a day. I tested in whatever the "in between" area was on that for impulsivity. None of the people I knew that played twitch games a lot got a positive result on that test.