@bythewell - The problem is that the job market is getting so competitive. You'd think that would make people become more personable in order to improve their chances of getting a job. But unfortunately, it also ups the competition at the schooling level.
There might only be a few control systems engineer jobs going for a given class of students. And as much as the interviewers will love joking around with one of the applicants, they are still going to hire the one with the best grades.
So, I think people have more and more pressure to stay in their rooms and study, rather than learn how to get on with others. Just my opinion.