Right-brain and left-brain creativity

pieces

you've heard: left & right human brain hemispheres have different functions...that right = intuitive, creative, focuses on the whole and left = logical, analytic, focuses on pieces. IS THIS TRUE? Are there dramatic functional differences between our right and left brain hemispheres? Is "human creativity" located more on the right side than the left side? I have a Ph.D. in psychology but I'm not really qualified to give the best answer to this question. I'm no neuroscientist. But here's my best speculation: the typical discussion of the types and differences in brain functioning that are attributable to the right and left brains are probably exaggerations and oversimplifications. I suspect that our understanding of the biomechanical operation of the brains AND our ability to measure these operations is still pretty primitive (i.e., we will know a hell of a lot more about mammalian brain functioning 100 years from now than we do now...and still only be part of the way there). I also have come to the conclusion that the idea of two different types of brain-functioning--one that is rational and deductive and one that is intuitive and inductive--is a very useful metaphor and explanatory device for understanding and working with humans. It's easiest to see these "two different ways of thinking" in the different things that humans do. Take finger painting vs. simplifying an algebraic formula. Finger painting is clearly very expressive, subjective, and not easily subjected to verbal analysis or explanation. Simplifying an algebraic formula follows a clear set of rules, can be objectively evaluated, and is easily explained. [other examples] These intuitively feel (both mentally and physically) like radically different tasks--tasks that our brain seems to approach differently. It doesn't feel like I'm using my brain in the same way in these different pairs of tasks. It may turn out that I am, but until we have established that as fact (and understand how that is), I am probably going to rely on the "two brains," "two different types of tasks,"