Warren Kubitschek and Maureen Hallinan, University of Notre Dame, social psychologists who suggested that attraction is the result of the propinquity and similarity effects and the status of each party involved. Their study was about the tracking program that organizes students according to their level of ability to learn. This is mostly implemented in middle and almost all of high school. Their goal is to prove that students on the same track have a higher probability of becoming friends compared to those in different tracks. Other organizational based groupings should also follow these factors. The propinquity effect creates an ideal environment where students are in close physical proximity with each other and have the chance to build familiarity that leads to friendship. Similarity in tracking students is important because they found that track students tend to become friends with others who have the same academic achievement and expectations as themselves. They also found that students on the same level of status concerning grades will likely name them than those who are on lower level than their own. They conclude that although the factors mentioned do have great influence on friendship, they are not exclusive for organized program like tracking.

आकर्षण = romantic relationship
सामाजिक अभिसरण सिद्धांतSocial exchange theory
Similarity in different aspects वेगवेगळ्या बाबतीतील सारखेपणा
आकर्षण =मैत्री आणि स्नेह