highly significantp < .001
It should also be noted that this same trend was seen in Experiment 1 – that is, the group of Experiment 1 participants with the most liberal criterion for responding uncertain were the RB responders in the II condition. During the last 150 trials of the experiment, participants best fit by an RB model responded “uncertain” more frequently (M = 63.2, SD = 35.2) than those best fit by an II model (M = 12.8, SD = 15.2), and this difference was highly significant [ t (24) = 5.13, p < .001].