Submitted by Philosoclown on
Interdisciplinary prejudice and turf defense are slightly different but related phenomena.
Interdisciplinary prejudice is the understandable default assumption that someone outside of your discipline isn't going to be nearly as good at work in your discipline as someone whose formal affiliation and training is in your discipline. Turf defense is an emotional reaction to the threatening idea that someone outside of your discipline might be as good as you and your colleagues, or better, at work in your own discipline [ETA:] or that others might falsely perceive them that way.
Usually, interdisciplinary prejudice is justified, and perhaps not deserving of a pejorative label. If a non-philosopher submits something to a philosophy journal, odds are good that it won't be an excellent work of philosophy. If a philosopher tries to run a psychology experiment, odds are good that their methods and analyses won't be as solid as a psychologist's. For similar reasons, turf defense isn't wholly unjustified: You don't want others to mistakenly think that the non-X researcher's probably-inferior work is as good as a disciplinary expert's work, so it makes sense in a way to guard against incursions. The turf defense reaction is also, I think, partly driven by feelings that the outsider is being disrespectful: If an outsider thinks they can come in and beat us at our own game, that seems to suggest that they lack respect for our years of hard work and disciplinary training.
However, sometimes people really can do excellent work in more than one discipline. It takes years of effort to acquire the knowledge and skills; but people do sometimes put in the requisite time and effort. An Associate Professor of X with a strong interdisciplinary focus might have as much knowledge of and experience in Y as an Assistant Professor in Y. (It would be almost superhuman, though, for an Associate Professor in X to have as much knowledge and experience in Y as an Associate Professor in Y, unless the situation is very unusual.) However, even when the outsider does have the requisite knowledge and skills, it is, I fear, a sociological fact that substantial prejudice and turf defense remain.
Eric Schwitzgebel
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