Swann Jr, W. B., & Pelham, B. (2002). Who wants out when the going gets good? Psychological investment and preference for self-verifying college roommates. Self and Identity, 1(3), 219-233.
The results of a field investigation indicate that people who are highly invested in their self-views (confidently held or personally important) are especially inclined to display a preference for verification of their self-views. Specifically, only those participants who were certain of their self-views or perceived them as important preferred roommates who confirmed their self-views. Such preferences were some-what stronger when the self-views were relatively negative. ...