ABSTRACT
A core thesis of cognitive science is that representations, be they structures inside the head of the problem-solver (internal representations) or structures in the environment of the problem-solver (external representations), are fundamental to understanding problem-solving behavior (Markman, 1999). There may be some debate about the underlying nature of these representations (e.g., the relative weight that problem-solvers place on internal vs. external representations, whether the representations are symbolic or not), but all cognitive scientists endorse some form of underlying representation driving behavior (Dietrich & Marton, 2000).
