Well, you have a specific example and an over-arcing question.
On the specific:
Stockholm Syndrome is a real psychological disorder that existed for as long as humans have been blessed (or evolved far enough, depending on your particular beliefs) with cognizant thought. It was only after the Stockholm incident that it was isolated and diagnosed, however it has always existed. As such, there's no real problem that I can see with an IC treatise on a possible diagnosis of such a psychological disorder, save for the complete lack of modern psychological study, that is.

So, personally, I'd advise steering away from phrases such as "paradoxical psychological phenomenon"... since psychology wasn't created or even thought of in the FR. All ailments, even psychological, were thought to result of ailments to the body or just plain insanity. Remember, Aristotle and Plato touched on psychology pre-Dark Ages, but then there were no real advances until around 1159 with John of Salisbury's
The Metalogican. But... I digress....
On the broader question:
Misinformation is a very real part of society... both ancient and modern. So, I don't really have too much of a problem with that, either.
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"I once took the high road and it took me straight to hell and I stood there all by myself." -Hank III