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.
Example sentence:
The engineers don't seem to feel the new project is as important as the old one, but that might just be their _____ bias.