I recently came across this fascinating article by Colleen Vojak about how the language social workers use has clear impact on "helper and recepient" relationships, particularly on how marginalized folks develop their own sense of self.  From the article's abstract is this key line: 

Social service providers who care about social justice, but do not understand the relationship between language and the larger social vision they want to help create, may unwittingly undermine their own project by reinforcing the language of hegemony.

Right on.  This is already evident to many TLA practitioners, and may be of use for those of us interested in other disciplines and academic connections.  Take a look if you're interested.