For some things (socialization, substance use patterns, etc.), you'd expect different results on college students than on other populations, so you'd need to ru

For some things (socialization, substance use patterns, etc.), you'd expect different results on college students than on other populations, so you'd need to run additional experiments to determine if being a college undergrad moderates whatever effect you study. For other things, like perception, drug effects, etc., it seems less likely that this is actually a problem, because there's no reason to believe the neural pathways that acetaminophen operates over are different between any two humans.