"For example: give a kid everything they could possibly want to play with and they tend to get spoiled and lose their imagination and creativity, whereas a poor kid with fewer toys has to use his imagination to create things out of what's within his grasp."

I've read studies where kids are given a task to accomplish, and various random pieces and tools to accomplish the task. "Regular" kids will pick just the tools they need to get the job done, whereas "gifted" children attempt to use almost every single piece in Rube Goldberg-fashion, making the task overly difficult and time-consuming.

Hell, I recall my wife watching some reality show about teams looking for buried treasure around the world, and the "genious" team out-thunk themselves in one episode. They rationalized the completely opposite and wrong answer, whereas other teams found it an easy decision to make (I don't recall the specifics - I'm not a big "reality show" fan.)