PRL modelling
Hierarchical Bayesian modelling revealed that the escitalopram group had lower reinforcement sensitivity compared to the placebo group at the credible difference level of 90% (MD = −2.77 [90% HDI, −5.29 to −0.40]). There were no significant group differences for the reward learning rate (MD = −0.02 [90% HDI −0.15 to 0.11]), punishment learning rate (MD < 0.01 [90% HDI −0.07 to 0.07]) or stimulus stickiness parameters (MD = −0.03 [90% HDI −0.31 to 0.25]). The results are represented in Fig. 