 Low-level simulation processes are cognitive processes with these features: (a*) they are typically unconscious, automatic, and stimulus-driven; (b) they satisfy  PROC,  that is, they are implemented by the reuse of a certain cognitive mechanism, C, and their output states resemble the output states generated by the use of C. What cognitive processes are, according to ST, instances of low-level simulation? The answer can be given in two words: mirroring processes. Clarifying what these two words mean, however, will take some time.