I'm definitely left handed, but I don't think visually very well. I do prefer brainstorming with diagrams, but I need to draw it out.

The brain is a fascinating piece of hardware, especially how it supports language. For example, I would guess OOP is more suited to human thinking because language (and hence metaphor) is supported directly in the brain while mathematics is a more recent invention that we have to "learn."

I guess there is a reason research in visual programming started the whole field of HCI. Good luck with your work!