I don't have any links but if you need actual studies, you can lift them off of sci-hub.
Many times most just post an abstract and not the actual papers, since the abstract is the public facing item. Well ... there's a DOI number in there that you can use to tell the magazine which one you want, if you have an **expensive** subscription to it ...
I never do. I have sci hub.
https://www.sci-hub.pub/
Many times most just post an abstract and not the actual papers, since the abstract is the public facing item. Well ... there's a DOI number in there that you can use to tell the magazine which one you want, if you have an **expensive** subscription to it ...
I never do. I have sci hub.
https://www.sci-hub.pub/
https://archive.org/details/bell_curve-epub/
seems to be mostly infographics with a source and their commentary on the subject