F(4.8,288) = 7.33, p < 0.001 were detected. In experiment 1, a main effect of Block and an interaction of Block × Line F(4.0,124.8) > 3.97, ps < 0.005 were detected, therefore HAP2 and LAP2 were stratified. Simple main effects were detected in both HAP2 F(3.1,46.4) = 19.71, p < 0.001 and LAP2 F(4.5,72.3) = 8.63, p < 0.001 lines, so paired t-tests were performed by Block back to the first block within Line. To control for multiple comparisons, we used a Bonferroni-corrected α of 0.00714. In HAP2s, the RTs were slower in the seventh and eighth blocks than the first block ts(15) > 4.93, ps < 0.001. In LAP2s, RTs improved in the second block, but were then unchanged through the last block. Large increases in RTs were only seen in the HAP2s. In experiment 2, a main effect of Block and an interaction of Block × Line F(4.5,148.7) > 4.39, ps < 0.002 were detected, therefore HAP1 and HS/Ibg lines were stratified. Simple main effects were detected in both HAP1 F(3.0,51.3) = 20.70, p < 0.001 and HS/Ibg F(5.4,87.0) = 3.43, p = 0.006 lines, so paired t-tests were performed by Block back to the first block, again
