> Two-thirds of them draw their subjects exclusively from the pool of U.S. undergraduates, according to a survey by a Canadian economist named Joseph Henrich an

> Two-thirds of them draw their subjects exclusively from the pool of U.S. undergraduates, according to a survey by a Canadian economist named Joseph Henrich and two colleagues. 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. I've probably taken 100s of these behavioral research studies over the last few years on Amazon'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'm amazed to see it'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.