This rings true for me. My mom never understood how I completed half of my assignments on time. She always thought because I never had anything typed days in advance that I wasn't working on it. She didn't realize that I was mulling over thoughts and ideas in my head. If I were to actually write or type anything out in advance... It would end up being scratched out or deleted a million times. So I just hold off and keep everything in my head until I've got a good starting point... Once I get to that point it all seems to just flow freely.
I definitely never put in the amount of studying that my J friends did in school. For every 3 hours of studying they put in, I probably put in 1 hour.... I always ended up scoring about the same as they did on tests. For some people studying long hours works, for me it does not! The longer I study, the more likely I am to screw up.