> my anecdotal experience goes against this research
There are several things wrong with your argument.
Even if we ignore the fact that you aren't talking about your IQ, the fact that you learned docker or JS despite working doesn't even go against the study: you need to compare your speed of learning after working vs while not working. Knowing only how fast you can learn after working full time isn't enough to draw a conclusion after all..
Also, it's debatable how difficult it is in terms of raw intelligence to learn JS and Docker. It could be argued that using new tools is more constrained by knowledge than by intellectual ability, and this is especially the case if you've learned similar things before, like another imperative language.
There are several things wrong with your argument.
Even if we ignore the fact that you aren't talking about your IQ, the fact that you learned docker or JS despite working doesn't even go against the study: you need to compare your speed of learning after working vs while not working. Knowing only how fast you can learn after working full time isn't enough to draw a conclusion after all..
Also, it's debatable how difficult it is in terms of raw intelligence to learn JS and Docker. It could be argued that using new tools is more constrained by knowledge than by intellectual ability, and this is especially the case if you've learned similar things before, like another imperative language.