&gt; <i>Two-thirds of them draw their subjects exclusively from the pool of U.S. undergraduates</i>, according to a survey by a Canadian economist named Joseph Henrich and two colleagues.<p>This is pretty shocking to me. I participate in these behavioral studies and I thought the pool of candidates would have been pretty much the polar opposite; middle-aged women with, at most, high school degrees or GEDs.<p>I&#x27;ve probably taken 100s of these behavioral research studies over the last few years on Amazon&#x27;s Mturk program and the vast majority (according to researchers who release demo data) of participants are always the same; stay at home moms with minimal educational backgrounds. With as much studies that get pushed through Mturk, I&#x27;m amazed to see it&#x27;s only a blip compared to what the guy surveyed. It makes me question his results. There are at least a few dozen academic behavioral studies that get posted every single day to Mturk so I wonder just how many of these studies are actually being carried out.