Fig. 5

Feature-based learning was stronger for the more informative feature. a–d Plotted is the log product of the estimated learning rate (α) and assigned weight (w) for the less informative feature (non-informative in the case of Experiments 2–4) vs. of the same product for the more informative feature for each individual, across four experiments. The insets show the histogram of difference in (α×w) between the more and less informative features. The dashed lines show the medians and the solid gray lines indicate zero. The star shows that the median of the difference in (α×w) were significantly different from 0 (one-sided sign-rank test, P < 0.05). These products were larger for the more informative feature in all experiments. e–h. Plotted is the feature-based differential response for the less informative feature vs. the more informative feature. Conventions are the same as in a–d. The feature-based differential response was larger for the more informative feature in all experiments (though it did not achieve significance in Experiments 2 and 3), indicating that subjects updated their behavior more strongly for the more informative feature