Included here are the two simulations. "One Stage Simulation" is a modification of the Oppenheim, Dell & Schwartz (2010) paper for the specific design of this experiment, with the goal of calculating representational similarity across the lexical level during each trial in the homogeneous and heterogeneous block conditions. "Two Stage Simulation" is an extension of this theory, in which learning is also occuring between object representations and semantic features between each trial, again calculating the representational similarity across the lexical levle.