I have just found the following sentence:
Especially is this true in the field of psychology.
I know the rule that says that whenever a sentence begins with an adverb that expresses negativity, it should come first the verb and then the subject. However, in this case, it does not seem to be the case for a subject-verb inversion. Can anyone explain the grammatical reason why this sentence is correct? Does this inversion have to do with the adverb especially?