Comment by FastMonkey
4 years ago
All undergrads from a single university also. Just based on the social development of people as they go through undergrad, I'd guess that the variance in behavioural change before and after treatment is fairly high whether they're treated or not.
Just like a lot of pharma papers need a `... in mice` appended to their titles, a lot of psych papers need `... in undergrads` appended to theirs.