I think saying something like "Is someone born with some # IQ?" is entirely dependent on what an IQ test/measurement is really testing for. From my extremely limited knowledge of this topic I would say that a test that sees how well you can manipulate languages (in a spoken sense), math...
I think using a polar rendering method would assist in making simple systems(it would also allow for easy modeling to 3d(simply provide another angle)). Of course this is just a random idea.