I am looking for a word or phrase (possibly of the form "____ bias") that describes the bias felt by members of a profession towards their own profession, some of examples of which might be:
An author is more likely to write about characters who are themselves authors, a playwright to write about playwrights, and a painter to paint about the experience of painters.
An engineer will tend towards trying to solve the problems faced by other engineers.
A politician is most attuned to the issues faced by people who work in politics.
The engineers don't seem to feel the new project is as important as the old one, but that might just be their _____ bias.