[dhimes]

The studies I have seen (I'll admit- I didn't read TFA- maybe I have in the past idk) all used some sort of survey to identify learning styles. Nobody, to my knowledge, has measured learning by modalities to identify them.

You are spot on that attempts to match instruction to learning style have been futile in the VARK-like learning style classifications. They also assume that if a student has a learning style, it will be the same across subjects. If it turns out there is such a thing as learning styles I woudn't be at all surprised if it varied by what you are learning.