Oooh, that was a smooth move . . . I didn't even feel the bumps!
Thread moved to appropriate forum--
~RR
I believe that sign language uses the visual (or artistic) side of the brain, making it easier for those people.
Sign language activates the same part of the brain as does spoken language. (Check Klima and Bellugi's fascinating studies on this topic.) Artistic tendency has nothing to do neurologically with learning the language but it might have a bearing on how well a signer is able to adapt to ASL storytelling.