Test phase results. A) We analyze choice of the right vs. left image in the test phase as a function of the value difference ΔQ=value(right image) – value(left image), the set size difference Δns, ΔQ*ns the interaction of the mean set size of the two images with the value difference, as well as other regressors of non interest. We find a significant effect of all three factors across both experiments. B) the effect of value difference is significantly stronger in high set sizes than in low set sizes, indicating that RL was more efficient under high load, thus highlighting an interaction of RL with WM.