I've mentioned the Cheese link here in the past, as it totally spoke to me. I didn't grow up with all of these traits, but the fact that my family stockpiled canned goods and we rarely saw fresh veggies was something that struck a chord. I was fortunate in that I discovered that fresh veggies and not crap tastes amazing, so I guess my palette wasn't completely ruined, but I still crave absolute crap from time to time... and it is always the cheap, full of preservatives junk. And I also always planned for long-term goals, so I don't hoard my savings too badly and I'm okay with risk in investing since I'm in it for the long haul.
Concerning the link from the OP, it's fascinating but comes as no surprise really. When you're poor, your thoughts are going to be consumed with where your next meal is coming from, whether they'll shut off the lights tomorrow, or how will you get to work if your vehicle breaks down... cognitive ability would be severely hampered by all of that stressful brain activity swirling around.