(a) Mean accuracy across participants for first six trials of the first nine mini-blocks of initial and new category training, as well as blocked generalization phase. Dashed line indicates chance-level performance. (b) Estimated exponential rate of change in mean accuracy in the first six trials for all mini-blocks in each phase, across participants. (c) Mean reaction times (RT) for each trial in each of the first nine mini-blocks for each of these phases. Shaded area represents standard error of the mean (SEM). Mean and standard error were calculated from the log-transformed RTs. (d) Estimated exponential rate of change in RT for first six trials within each phase for the first mini-blocks within the first three contexts in presentation order. For panels (b and d), each dot represents a single participant, and horizontal and vertical bars represent the mean and SEM, respectively. *p<0.05, Wilcoxon signed rank test, corrected for multiple comparisons, ^p<0.05, uncorrected. (e) RTs for trials from the pseudo-randomized generalization phase from sessions 2 and 3 where latent states remained the same or switched from the previous trial, while the context switched or stayed the same. RTs have been log-transformed and z-scored within session for each participant. Each line represents a participant, black dashed line indicates mean, and error bars indicate SEM. †p<0.05, ††p<0.01, repeated-measures t-test.