talking about commonsense notions and theory, paul churchland, in defense of his eliminative materialism, goes to great length to [attempt to] establish that commonsense/folk-psychology is indeed a theory. a good summary of his argument can be found at:
http://plato.stanford.edu/entries/folkpsych-theory/ http://cognet.mit.edu/MITECS/Entry/baker
of course this is a bit different from the current discussion of sociological theories that go beyond a "theory of mind".
this is a good paper if you can get your hands on it:
Eliminative Materialism and the Propositional Attitudes
Journal of Philosophy, 78, no. 2, February 198l
--ravi