I’m going to guess this is an economically comfortable person with lots of free time imagining that people less well off have none. To an approximation, that trend is surely true - poor people have less free time - but almost everyone can find time to do things they want to do. Would it skew results? Hard to say.

Nope, I’m not thinking about their test in any way. I’m explaining that it’s explicitly unrelated to your cognitive ability. Getting a more convenient job does not boost your brain.

I’m going to guess you’re obsessed with the plight of those you perceive to be “under” you. I mean, they’re poor - there’s NO WAY they’re doing well on the test right!?

Such an obnoxious point of view. Of COURSE your job has no causative effect on your natural cognitive ability. What a ridiculous way to try and look down on the poor.