Learning styles (the idea we each have a preferred style, such as visual or auditory, and that those should be catered to for effective learning) are a myth. This shouldn’t need to be said again. Other people have said it well. (You can skip below for a list of references.)
But it’s a tenacious, popular myth. I understand how attractive the idea is … when I was a neophyte graduate student in a TA training workshop, I remember the satisfaction of completing a learning styles inventory (like this: http://www.personal.psu.edu/bxb11/LSI/LSI.htm & this: http://www.learning-styles-online.com/inventory/ & this: http://www.educationplanner.org/students/self-assessments/learning-styles.shtml & I really need to stop because this is just irritating me …) and figuring out that I was a “kinaesthetic” learner. Of course! Of course, I was a science grad student, and this made sense! We do experiments! I learn by doing! (I didn’t think about the fact that I could probably have found a rationale for being a “visual” learner …) It was an easy way for me to think about my learning! And to justify why I didn’t perform so well in some courses … those ones were not tailored to my learning style! (Woe to those poor nasal learners … )
That was back in 1994.
Now there is ample evidence that teaching towards preferred learning styles does not seem to actually help people learn. Even trying to reliably categorize people into preferred learning styles is fraught with issues. Meanwhile, many teachers/professors and students waste time and energy on this, efforts they could be directing elsewhere. (Check out the book “Make It Stick: The Science of Successful Learning” by Brown, Roediger and McDaniel for a good overview of what we DO know about teaching/learning based on recent cognitive science research.)