“College freshmen are more likely to make friends with peers they share a dorm room or major with than they are to befriend those from similar racial backgrounds…”
I barely remember my roommate from living in the dorm freshman year. He was as much a stranger to me as the person you routinely run into at the store. I felt trapped living on campus when I wanted to be a few miles away in my own bed. His leaving town on weekends to go see his girlfriend was good for me.
My initial declared major was pre-engineering. None of my true friends were also pre-engineering, but then again my true friends were mostly met in high school. The few friends I made in college were all over the place major-wise: pre-law, biology, chemistry, philosophy, english, education, business. They were people I met either in class or at work.
The researchers used Facebook as the measure of who are friends. Given most friendships on Facebook are weak ties rather than strong. The people we know well, trust, and hold great affection reflect our strong ties. The people we barely know, but on whom we depend for the information social networks convey are our weak ties. Facebook is excellent for this. From this perspective, if I were a freshman in college today, I probably would be getting as many people in my classes as I could. (This is why so many of my coworkers are in my list of friends. Don’t worry, Glenn, you are more than just an acquaintance. :))