Whither structured representation?

The perceptual symbol system view assumes that perceptual representations h ave a role-argument structure. A role argument structure is often incorpora ted into amodal symbol systems in order to explain conceptual functions lik e abstraction and rule use. The power of perceptual symbol systems to suppo rt conceptual functions is likewise rooted in its use of structure. On Bars alou's account, this capacity to use structure (in the form of frames) must be innate.