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Results of simulations of the effect of randomizing spatial position of stimuli on the blocking effect using REM (top) and ECM (bottom). The original models do not make any predictions for this experiment and additional assumptions were made to obtain these results (see main text). Each simulation was run using three different values of the free parameters ρ and δ. Blocking is a robust prediction of these models and it is not affected by variations in the spatial position of stimuli.
