I couldn't get access to the article, and the abstract gives no relevant detail to what they are assessing on which subjects... do the other commenters have an

I couldn't get access to the article, and the abstract gives no relevant detail to what they are assessing on which subjects... do the other commenters have an access to it, or could eventually tell us more about how this study was done ? Edit: pdf here https://news.ycombinator.com/item?id=35682016&goto=item%3Fid%3D35681824%2335682016 https://news.ycombinator.com/item?id=35682016&goto=item%3Fid...