I recall hearing a social cognition lecture a number of years ago in which the lecturer described a particular idea that centered around the role of self-fulfilling prophecies in relationships. For example, if I believe that x is a hostile jerk, I'll tend to treat them in a way that makes them more hostile. (A good example of a book that subscribes to this type of a view is Feeling Good Together by David Burns; I'm not sure if he subscribes to the exact theory that I'm trying to remember, though).
I'm pretty sure that there was a specific name for this, but I don't recall what it was.
Can someone help me identify which theory or term this is?