<p>(A) Posterior predictive checks for SCZ.</p>

The model simulations were generated by sampling the posterior and using the post hoc absolute fit method. <i>(Right)</i> Learning curves for each set size plotted in terms of RT trends for empirical data and model simulations. Shaded regions show 94% HDI ranges of the group mean. <b>(B)</b> Group-level differences between HC and SCZ.

Posterior distributions of the group-level means are shown for the three main contrasts – proactive adjustment of decision threshold <i>m</i>, RL learning rate and WM decay . Note that denotes the back-transformed (via <i>exp</i> function) parameter space. <b>(C)</b> <i>(Left)</i> RT differences (or slope) in empirical and simulated data between HC and SCZ groups over the course of learning. The RT slopes across learning are characterized by learning rates – HC group with higher learning rate shows steeper slope than SCZ.