Sorry, my computer has a mind of its own today!!
What I started to type was; Is there any way - using a guitar & a series of chords, perhaps - to identify the different kinds of learners ?? Those who have to hear, or be told first, or feel it under their fingers ?
It seems like there would be a simple little musical exercise that would sort this out, and then you'd know which approach to take. (of course there's probably a "paper & pencil" test that does this easily!)