Fig. 3: Results of experiment 1.

Increase in anti-vernier dominance relative to the anti-vernier dominance of frame 7, for the standard (blue line) and split-vernier (yellow line) condition. Performance in the two conditions is roughly the same. Error bars depict standard errors; circles depict individual participants’ data points. There is moderate evidence in favor of an absence of an effect of difference between both conditions (Bayes factor = 0.298, median of effect size = 0.015; 95% CI of effect size = [−0.512, 0.544] in a two-tailed paired-sample comparison of slopes; n = 11 independent participants).