I teach science, and it's frustrating that nearly all of my students can tell me their learning style. Their previous teachers have taught them about learning styles as a way to improve their studying, and they've jumped on that information. But the literature indicates that matching instruction to a learning style doesn't improve learning. This is a total waste because we're effectively giving students a magic talisman to help them learn science, because once students find out it's wrong they'll be less likely to take our advice on studying, and because the time we waste on it could be spent on telling people about real things that actually improve learning.