I don't know about that. It's hard to be effective at "nagging someone to success" unless they have a positive bond with you (friendship). All the nagging in t

I don't know about that. It's hard to be effective at "nagging someone to success" unless they have a positive bond with you (friendship). All the nagging in the world from someone you don't trust just makes you stonewall. Conversely, a push from a slightly older, more accomplished peer can be very motivating. Some sports examples might include a varsity player telling a JV player: "Come on, just one more lap!" "We're not leaving the field till you get a goal past me." Etc. My sense when I read the quote you pulled out was that nag was not the best word choice for what they described the students doing.