Complex sentence: A psychology study measured the level of friendship maintained between students at the Massachusetts Institute of Technology and found that the closer in proximity the students lived to each other in the housing complex of MIT, the stronger they reported their friendship to their fellow student.
Split into simpler sentences: A psychology study measured the level of friendship maintained among students at the Massachusetts Institute of Technology and found that the closer the proximity the students lived to each other in the housing complex of MIT, the stronger they reported their friendship to their fellow students. The farther away students lived from each other in the housing complex, the weaker they reported their friendship to their fellow student.