Monkey Category Chain performance for painting stimuli.

<p>In all cases, violin plots represent the posterior density for the parameter estimate. <b>(A)</b>. Conditional response probabilities for each subject with respect to each list item. <b>(B)</b>. Overall probability that any given trial will result in reward delivery (equal to the product of the conditional probabilities) for each subject. <b>(C)</b>. Mean progress in the list on each trial for each subject, averaged across sessions. <b>(D)</b>. Observed mean progress in the list on each trial for each subject, for each of the last 16 sessions.