Which one is correct in what case?

I have found someone suggesting that you use "at" for organizations and "in" for fields or disciplines, e.g.,

I've got an internship at NATO, and he's got an internship at Red Hat, but she's going for an internship in engineering.

These are clear, but there are corner cases less clear to me. For instance, would you say:

  • "I've got an internship at the department of psychiatry at a hospital in Boston"; or
  • "I've got an internship in the department of psychiatry at a hospital in Boston"?

...since here we are speaking of a place, however the emphasis lies on the discipline. Or are both fine?

  • 1
    A similar common expression is "an internship with such-and-such". – Pockets May 21 '14 at 23:21
  • Is there any any reason why 'internship' should differ from 'job, position, or appointment' in terms of the prepositions it takes? – WS2 May 21 '14 at 23:22
  • @WS2 I don't see any reasons why it should differ. You may apply the answer here to all the other nouns you mentioned as well. – Malte Skoruppa May 30 '14 at 9:28

I think the rule referenced is quite clear in this regard, actually. The "department" is not the field of study itself, but rather "an organization" within the larger institution.

"I've got an internship at the department of psychiatry at a hospital in Boston"

protected by MetaEd Sep 28 '18 at 17:48

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