Results from summation test stimuli presented again during inference test.

Presented A+/AX−/C+/DE-, tested CX, CE, for both outcome 1 and 2. Left panel: difference scores, calculated as the difference between O1 and O2 ratings for B₁X₁ and B₁C₁, and the difference between O2 and O1 ratings for B₂X₂ and B₂C₂. Right panel: outcome-specific scores, using the rating for O1 only for B₁X₁ and B₁C₁, and the rating for O2 only for B₂X₂ and B₂C₂. Error bars represent the standard error of the mean difference between test and control.